2017 Vol. 38, No. 7

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2017, 38(7): 961-963. doi: 10.16835/j.cnki.1000-9817.2017.07.001
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2017, 38(7): 964-966. doi: 10.16835/j.cnki.1000-9817.2017.07.002
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Study on the association between sleeping status and impaired glucose tolerance among normal weight adolescents
LI Liwen, ZHAO Kena, ZHAO Anda, LYU Jiajun, ZHANG Jinwen, WANG Xiaobin, LI Shenghui
2017, 38(7): 967-971. doi: 10.16835/j.cnki.1000-9817.2017.07.003
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Objective To explore the association between sleeping status and impaired glucose tolerance among normal weight adolescents,and to provide a reference for early prevention of related diseases caused by impaired glucose metabolism.Methods Based on the Chinese Metabolic Syndrome Cohort Study in Anhui province,412 boys and 317 girls of normal weight aged 12.6 to 18.9 years were taken as objects.And the related data was collected to analyze the correlation between sleeping characteristics,including sleep duration,sleep quality,and sleep disordered breathing (SDB) with fasting blood glucose level,impaired fasting glucose (IFG) and impaired glucose tolerance (IGT).Results In the group of male adolescents of normal weight,a significantly positive correlation under fully adjusted model was found among age,BMI-Z,development stage,education on smoking and drinking,and the risk of PSQI,poor sleep quality,SDB with IGT probability [OR(95%CI) PSQI:1.449(1.158-1.813),P=0.012;PSQI ≥ 6:4.643(1.718-12.548),P =0.003;PSQI ≥ 5:4.737(1.898-11.827),P =0.001 SDB:2.972(1.010-8.746),P=0.048].In addition,sleep duration was negatively correlated with the probability of IGT[OR(95%CI) sleep duration:0.568(0.404-0.797),P=O.001;sleep duration<8 h:3.528(1.399-8.896),P=O.008].Conclusion The poor sleep quality and insufficient sleeping time could increase the risk of abnormal glucose tolerance among male adolescents of normal weight,but this trend is not obvious in the female group.
Association between telomere length and blood pressure among different nutritional status children
DONG Yanhui, WANG Xijie, WANG Zhenghe, YANG Zhaogeng, MA Dongmei, ZOU Zhiyong, MA Jun
2017, 38(7): 972-974,979. doi: 10.16835/j.cnki.1000-9817.2017.07.004
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Objective This study aims to determine the association between the average leukocyte telomere length (LTL) and the level of blood pressure (BP) in children and to provide basis for the effective prevention of hypertension of children.Methods From the special health research baseline database,a total of 253 children aged 7 to 12 years were selected from Hunan,Tianjin,Liaoning and Shanghai in 2012 based on body mass index (BMI).Participants were categorized into three groups including normal BMI,overweight/moderate obese and severe obese group,with 81,85 and 87 children in each group.Multiplex quantitative real-time PCR was used to measure leukocyte telomere length and calculate the log-transformed length.The association between LTL and the level of BP was analyzed by using Pearson correlation analysis.Results The elevated BP in children aged 7-12 were 15.81% and 24.90% according to National High Blood Pressure Education Program(NHBPEP) and Chinese Hypertension League (CHL),respectively.The prevalence was 17.36% and 28.93% in boys,and 14.39% and 21.21% in girls,boys was higher than that of girls(P>0.05).The LTL and log-LTL was 1.07 and 0.02 in elevated BP (NHBPEP) group and 1.09 and 0.03 in elevated BP(CHL) group,no differences were found between those two groups with normal blood pressure group(P>0.05).Boys and girls showed the same results.The LTL and log-LTL showed no significant differences among normal BMI,overweight/moderate obese and severe obese group.Conclusion There are no significant association between telomere length with normal and elevated blood pressure.However,the results should be validated further in a large population of adults.
Analysis of correct handwashing behaviors and related family factors among Chinese urban migrant primary school students
MA Xuemei, SHI Huijing, LI Mengna, ZHANG Zhe, HU Yueming, GUO Jinping
2017, 38(7): 975-979. doi: 10.16835/j.cnki.1000-9817.2017.07.005
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Objective To investigate the current status of handwashing behaviors among Chinese urban migrant elementary school students,and to explore related family factors and to provide scientific basis for drawing up a control stategies.Methods A total of 4 089 grade 4 pupils and their parents were selected by multi-stage cluster random method from 34 urban migrant elementary schools in Shanghai,Guangzhou and Beijing.Handwashing behaviors during the past week (frequencies and methods) of the pupils,beliefs and awareness on handwashing,family socio-economic status were obtained by self-administered questionnaires.Results The prevalence of correct hand washing behavior of the migrant students was only 28.2%.Although the awareness of hand hygiene among parents (75%) was significantly higher than that in their kids (41.6%),the awareness of proper handwashing methods was only 9.4%.Multivariate logistic regression analysis showed that correct handwashing behavior among urban migrant primary students was positively associated with low family economic conditions(OR=2.09,95%CI=1.44-3.05),and was negatively associated with low maternal educational level(OR=0.57,95%CI=0.33-0.98),low parents' expectations on education(OR=0.53,95% CI=0.33-0.86),parent improper handwashing (OR =0.53,95%CI=0.33-0.86) and students improper handwashing(OR =0.24,95%CI=0.20-0.28).Conclusion Handwashing behavior is far from optimistic among urban migrant primary students.Family social economic factors are not average.It is necessary to strengthen handwashing education for the target population,especially for boys,those from low household economic status and those with low maternal education.
Analysis on nutritional status among elementary and middle school students in Baoshan rural area
DUAN Rufei, XIE Lin, ZHAO Jiane, FAN Fengxian, XU Weixian, ZHAO Xuewen
2017, 38(7): 980-983. doi: 10.16835/j.cnki.1000-9817.2017.07.006
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Objective To analyze nutritional status of elementary and middle school students and the status of school supply of nutrients in Baoshan rural area,and to provide statistic support for making related strategies and tactics of nutritional improvement.Methods About 10% elementary and middle schools were selected randomly from five counties of the Nutrition Improvement Program for Rural Compulsory Education Students in Baoshan city by school-based and company-based food supply modes.A total of 25 586 elementary and middle school students were recruited,and their height and weight were measured according to the standard method,school food and nutrients supplying were analyzed.Results Both average height and weight of male students were lower than the standard value,except 6-age group,both average height and weight of female students were lower than the standard value.With the age grew,the gap between average height of male students and the standard value was increased,height differences were obviously in 10-16 age groups;female students' weight difference was obviously in 11-16 age groups.The prevalence of growth retardation,moderate and severe emaciation,low-grade emaciation in male and female were 2.3%,1.9%;7.7%,7.8%;7.2%,5.9%,respectively.The prevalence of overweight and obesity in male and female were 9.8%,8.8%,6.0%,5.9%,respectively.Except for grains and poultry of the main food supply of school canteens and energy,protein,vitamin C of main nutrients,the others could not amount to 80% of recommended amount.Conclusion Malnutrition,overweight and obesity were coexisting among primary and middle school students in Baoshan.The schools provided a unreasonable supply of food nutrients,thus,the relevant health education should be carried out.
Latent class analysis on health risk behaviors among left-behind and non-left-behind adolescents in rural area of Zizhong Country
JI Yuanyi, XU Huanyu, ZHANG Yu, LIU Qiaolan
2017, 38(7): 984-987. doi: 10.16835/j.cnki.1000-9817.2017.07.007
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Objective To compare health risk behavior patterns between left-behind and non-left-behind adolescents in rural area of Zizhang country,Sichuan province,by using latent class analysis(LCA),and to provide scientific basis for carrying out control stategies.Methods Totally 2 805 students from two middle schools in Zizhong county of Sichuan province were investigated with Health Risky Behavior Questionnaire for Adolescents.LCA was applied to analyze eight types of health risk behaviors.Results Four latent classes were observed among left-behind adolescents:69 adolescents of high-risk behavior group (4%),321 of high selfinjurious behavior and suicide(20%),479 of moderate health risk behavior (30%) and 727 of low-risk group(46%).Non-left-behind adolescents were also divided into four groups:62 of high-risk group (5%),78 of high physical inactivity,self-injurious and suicide group (6%),588 of high accidental injury group (32%) and 681 of low-risk group(56%).Conclusion There are obvious different health risk behavior patterns and the mode of assemblage between left-behind and non-left-behind adolescents.The probability of occurrence have differences.
Survey on oral health knowledge and behavior among primary school students in Haikou District
DENG Ni, LIAO Tian'an, XIE lili
2017, 38(7): 988-990. doi: 10.16835/j.cnki.1000-9817.2017.07.008
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Objective To understand the status of oral health knowledge,related behaviors and the channels in primary school students in Haikou District,and to provide evidence for the oral health education.Methods A total of 1 269 students of grade 2 to 6 were chosen from 4 primary schools in Haikou by random cluster sampling,a structured questionnaire was given to the students.Results The rate of 10 questions on oral health knowledge was 14.97%-67.22%,the lowest answer rate of oral knowledge was 14.97% for the role of nest groove closed,while the highest answer rate of oral knowledge was 67.22% for the importance of regular oral Health Examination.The rate of 11 questions on oral behavior was 8.59%-61.86%,the lowest answer rate of oral health behavior was 8.59% for flossing regularly,while the highest answer rate of oral health behavior was 61.86% for brushing teeth two times a day.The main channels for primary students to obtain the oral health knowledge were families (27.19%),radio and television (25.30%) and teachers (23.72%),all under 30%.Conclusion The oral health knowledge in primary students in Haikou is inadequate,and the oral health behavior is poor,it is necessary to strengthen the oral health education in primary students to improve the level of oral health.
Analysis on the present situation and satisfaction of drug-using behavior among college students in Shandong
HU Jinwei, YIN Wenqiang, ZHAO Yankui, GUO Hongwei, HU Shiliang, SUN Kui
2017, 38(7): 991-993. doi: 10.16835/j.cnki.1000-9817.2017.07.009
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Objective To study college students' drug-using behavior and satisfaction,and to provide evidence for the guidance on proper using of medicine.Methods Using stratified random sampling method,733 college students in Qingdao,Rizhao,Weifang city of Shandong province were investigated by self-made questionnaires.Results Totally 91.1% of college students hoped to restored to health by using drug.Female college students (58.6%) choose to use more inclined to advertise and prefer to use antibiotics(60.1%),students in coastal city prefer infusion(74.3%),rural students prefer the new drugs (56.9%) and imported drugs(53.1%).The difference was statistically significant.56.3% of college students was satisfaction with the present situation of drug-using behavior.Binary classification logistic regression analysis revealed,the influence factors included self-assessment of college Students' health status and medication knowledge,satisfaction with school hospitals,doctors' interpretation of the state of the illness clarity,the preference of infusion medication,and trust doctors' prescription medication(OR=1.954,1.801,1.560,2.485,1.612,2.323,P<0.05).Conclusion The drug-using behavior of college students was influenced by many factors.Government and schools should strengthen the construction of hospital and rational drug use intervention mechanism in order to provide a good system to cultivate the trust between doctors and patients.
Knowledge attitude and practice (KAP) and the environmental determinants of drowning among students in Yantian District of Shenzhen
CHAO Duo, XIE Jinyao, LI Heng, ZHOU Haibin, PENG Ji, ZOU Yuhua
2017, 38(7): 994-996. doi: 10.16835/j.cnki.1000-9817.2017.07.010
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Objective To understand knowledge,attitude and practice (KAP) towards drowning among students in Shenzhen,and to explore environmental determinants of drowning and to provide basis for the prevention and control strategies of drowning.Methods Random cluster sampling method was used to select students from grade 3 to 5 from six primary schools and grade 7 and 8 from two secondary schools in Yantian District of Shenzhen.Questionnaire survey was implemented to collect information regarding drowning.Results About 6.56% of 3 875 students fully understand knowledge on drowning.Middle school students' knowledge about drawning level was higher than the pupils(x2 =29.30,P<0.01) Nearly 89.16% were accurate on the question of "If the dangerous waters have a danger warning sign whether to play or swim";68.96% for the question "Will you go swimming with friends in the absence of accompanied by an adult?".Male adolescents have higher risk in terms of higher negative beliefs and attitudes towards high-risk drowning behaviors(x2 =35.77,38.32,45.96,P<0.01).52.61% of students reported a swimming pool or pond around their house.Dangerous waters around the envirunment were important risk factors for adolescent drawning(P<0.01).Conclusion Enhanced understanding of the risks of natural water body would help to reduce drowning among children and adolescents.Dangerous waters around the envirunment should be transformed.
Knowledge, attitude and usage of new-type drug abuse among college students in Beijing
ZOU Haiou, LIN Meng, LI Yue
2017, 38(7): 997-999. doi: 10.16835/j.cnki.1000-9817.2017.07.011
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Objective To investigate college students' knowledge,attitude and usage of new-type drug abuse,and to provide scientific reference for related education and decisions about prevention and control of new-type drugs.Methods Multi-stage random sampling method was used to select 965 students from 11 colleges in Beijing to complete the self-developed College Students' Knowledge,Attitude and Useage of New-type Drug Abuse questionnaire.Results The college students had got a quite poor knowledge of new-type drug.Only 38.2% of the students knew the fact that new-type drug harmed the brain;50.8% of the students considered new type drug had less damage to body than traditional drug;37.1% of the students had never heard of the new-type drug.However,only 36.6% of the students preferred to receive relative information.The differences of college students from different schools,majors,and of different genders were statistically significant(x2 =8.572,9.631,6.678,P<0.05).In general,the attitudes toward the new-type drug were positive.It should be noted that around 20% of the students did not believe that using new type drug was shameful;10.1% of the students did not consider using new-type drug may lead to self-destruction.Among all students,0.5% of the students have ever been tried to use new-type drug.Conclusion Knowledge and attitude toward new-type drug abuse among Beijing college students were not satisfactory.Families,colleges,and communities should conduct the propaganda or carry out related health education.
Investigation on the current situation, attitude and causes of physical exercises of 9-18 years old students in primary and middle schools in Tianjin
WANG Bin, DAI Wei, XI Wei
2017, 38(7): 1000-1002,1006. doi: 10.16835/j.cnki.1000-9817.2017.07.012
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Objective To understand physical exercise in school and exercise willingness among 9-18 years old students in Tianjin and to provide basis for making students physical exercises plan.Methods Using stratified cluster random sampling,6 401 Tianjin students aged 9 to 18 years old were investigated with 2014 national student physique and health survey questionnaire.Questionnaire includes general information,physical exercise in school,exercise willingness,etc.Results The frequency of P.E.classes were 3 days a week in primary schools,2 days a week in middle schools.90.8% of primary students,81.5% of junior and 58.9% of high school students took part in setting-up exercises during the break 1 to 2 times a day.About 22.9% urban high school students thought that their physical education was often compressed or cancelled.76.0% of students willing to physical education classes,81.7% of the students were willing to participate in extracurricular sports activities organized by the school,48.3% of students were willing to participate in distance running exercise.66.8% of the students thought that it because having no exercise habit that many students didn't take part in physical exercise;65.5% of the students didn't like running because of bitter,tired.Students' favorite sports were table tennis,badminton(63.5%),basketball,football and volleyball (45.3%).Overweight/obesity students were less willing to choose to run/jump projects.94.8% of the students' parents supported that students should spare time to take part in physical exercise.Conclusion Physical exercise in school is not optimistic in Tianjin;Most students have a willingness to take part in all kinds of sports,school sports education is in the important positions to promote students' forming physical exercise habits.
Analysis of current situation of dietary behaviors and the influencing factors among middle school students in Henan Province
LI Fengjuan, SUN Jing, YANG Biansheng, HE Jian, WANG Xu
2017, 38(7): 1003-1006. doi: 10.16835/j.cnki.1000-9817.2017.07.013
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Objective To study the status and influencing factors of dietary behaviors among middle school students in Henan Province so as to provide scientific basis for targeted pertinent nutrition intervention.Methods A total of 29 832 students from middle schools and high schools in Henan were selected by stratified cluster sampling method to complete a questionnaire.Results It was found that 10.4% of students drank beverage frequently,17.0% for eating sweet dessert,16.0% for eating fried foods,2.6% for eating fast-food,14.7% for eating roadside market,39.4% had food preferences behavior.Only 31.2% chose to eat fresh fruits frequently,61.2% for eating vegetable,89.4% for having breakfast,and 34.9% for drinking milk (including soybean milk,yogurt,and soymilk).Unconditional Logistic regression analysis showed that being in senior high school and lack of physical activity(watching TV,surfing the Internet,playing computer games more tha 4 h) were risk factors of bad dietary behaviors,while being in city,male,age,having good academic result,and doing physical exercises regularly were protective factors(P<0.05).Conclusion Dietary behavior has become one of the main health problems among middle school students in Henan,and is greatly correlated with the lack of physical exercises.Thus,effective nutritional prevention should be carried out early in order to promote healthy dietary behavior.
Evaluation of effect of combining medical treatments with education on hand washing knowledge and behavior among primary school students
ZHANG Qin, DONG Yuting, SUN Sifei, YUAN Hong, YU Guangjun
2017, 38(7): 1007-1009,1014. doi: 10.16835/j.cnki.1000-9817.2017.07.014
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Objective To understand the effect of combining medical treatments with education on students' hand washing,and to provide evidence for the promotion of the health education model of combining medical treatments and education.Methods A total of 1 239 primary school students of third grade from 15 migrant children's schools were divided into study group and control group.The study group adopted the mode of combining medical treatments with education to carry out hand-washing education with unified courseware,and the effect was evaluated after the intervention.Results After intervention,the awareness rate of hand washing knowledge of the students in the study group(92.4%) was significantly higher than that before intervention(79.5%),and the difference was statistically significant(x2 =39.750,P<0.05);during one week,the reported rates of washing hands before meals,after toilet and after getting home were 93.1%,94.1%,86.1%,respectively,higher than those before intervention(89.4%,89.0%,79.1%);the standard rate of "using hand washing supplies","six-step washing method rubbing hands time" "turning off the faucet method" and "drying hands method" were 95.9%,83.0%,87.6%,88.1%,92.0%,respectively,higher than those before intervention(49.0%,41.7%,44.0%,17.1%,20.5%),difference was statistically significant(P<0.05);while the intervention effect on reluctance to wash was not obvious;The reported rate of knowledge and behavior of hand washing in the study group were higher than those of the control group,the reported rate of hindering the hand washing in the study group was lower than that of the control group,the differences were statistically significant(P<0.05).Conclusion It is effective to carry out hand washing intervention through combination medical treatments with education in primary school and such model is an effective way for primary school student health education.
Relationship between serum free fatty acid/body mass index and metabolic syndrome among pupils in Yanbian Area
LI Yihua, QUAN Zhenxi, WEN Haiyan, FANG Jinnv
2017, 38(7): 1010-1014. doi: 10.16835/j.cnki.1000-9817.2017.07.015
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Objective To understand the relationship between serum free fatty acid / body mass index and metabolic syndrome (MS),and their combination effects on the risk of suffering MS among Han and Korean pupils in Yanbian area,and to provide a reference for screening the high-risk adolescents of MS in the early stage.Methods A cluster sampling method was used to select a total of 5 747 elementary school students (2 011 of Korean-Chinese and 3 736 of Han nationality) from 5 primary schools of Yanbian area from 15-18 July,2012 to 16-21 July,2013.The data about their height,weight,circumference (WC),SBP and DBP,serum triglyceride (TG),high-density lipoprotein cholesterol (HDL-C),glucose (FBG),free fatty acid (FFA) were collected.Results After adjustment for sex and age,the covariance analysis showed that the level of FFA in group with MS and in normal group among Han pupils was (22.72±2.72) and (21.09±2.60)iμmol/L,respectively,and those were (23.49±1.64) and (21.95± 1.63) μmol/L among Korean pupils,respectively;the levels of BMI in group with MS and in normal group were (25.68±3.58) and (16.98-±2.89) kg/m2 among Han pupils and those were (23.1 1±3.63) and (17.86±3.05) kg/m2 among Korean pupils,respectively.The levels of FFA and BMI in group with MS were higher than those in normal group(P<0.01).The prevalence of MS was progressively higher with the level of FFA and BMI (P<0.01) among Han and Korean pupils.The risk of MS in the upper quartile of FFA was 2.693 times as much as that in the lower quartile among Han pupils,and that was 12.132 times among Korean pupils;the risk of MS in overweight and obesity of BMI was 19.646 and 223.666 times as much as that in normal group among Han pupils,and that was 4.860 and 19.204 times among Korean pupils.The risk of MS was obviously increased in group with FFA≥P75 combined with overweight and obesity (Han:OR=172.524,95%CI=60.288-493.705;Korean:OR =79.188,95%CI=35.728-175.513),and that was obviously higher than that in group with FFA≥P75 combined with BMI normal and that in group with FFA
Parenting practice and cognitive emotion regulation on impulsive behavior among eco-migrant children
HU Jing, LIU Hao, FANG Jianqun
2017, 38(7): 1015-1017. doi: 10.16835/j.cnki.1000-9817.2017.07.016
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Objective To explore the relationship between migration,parenting practice and cognitive emotion regulation with impulsive behaviors among eco-migrant children.Methods Barratt Impulsiveness Scale(BIS-Ⅱ),Parental Bonding Instrument (PBI) and Cognitive Emotion Regulation Questionnaire (CERQ) was implemented among eco-migrant children and indigenous children.The multiple regression analysis was used in statistical analysis migration,parenting practice and cognitive emotion regulation with impulsive behaviors among eco-migrant children.Results A total of 700 indigenous children and 700 eco-migrant children.The score of impulsive behavior in eco-migrant children(66.89± 10.40) was higher than indigenous children(65.31± 11.64)(t =2.74,P<0.05).The influence factors of impulsive behavior included(β=-0.13),father control (β =0.26) and mother care(β =-0.17) of parenting style,acceptance (β=-0.12) and self-criticism (β=0.19) of cognitive emotion regulation(P<0.05).Conclusion The score of impulsive behavior in eco-migrant children is higher than indigenous children.Adaptive cognitive emotion regulation strategies and positive parenting practice could help to reduce impulsive behavior among eco-migrant children.
Relationship between non-suicidal self-injury and childhood sexual abuse: a meta-analysis
CHEN Xi, WEN Xin, TANG Hanmei, FU Yanyan, CHEN Xiaolong, MAO Shaoju, HU Wang, XU Lushuang, HUANG Peng
2017, 38(7): 1018-1022. doi: 10.16835/j.cnki.1000-9817.2017.07.017
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Objective To systematically review the relationship between non-suicidal self-injury (NSSI) and childhood sexual abuse (CSA),and to provide basis for the prevention of NSSI.Methods PubMed,Embase,CNKI and WanFang Data was used to search papers published before July 31,2016 regarding the relationship between NSSI and CSA.The retrieual words were NSSI,Self-mutilation,self-injury,self-harm,non-suicidal self-injury,self-injurious behavior,self-destructive behavior,self-damaging behavior,self-harm behaivor,self-harming behavior,self-mutitative behaivor,deliberate self-harm,sexual abuse,sex abuse,ect.Two researchers reviewed literature,extracted data and evaluated bias of included studies independently.Statistical analysis was conducted in Stata 14.0.Results A total of 37 cross-sectional studies involving 49 221 participants were included for detailed evaluation.Meta-analysis suggested that CSA survivors increased the occurrence of NSSI(OR=3.95,95%CI=3.30-4.74).Additionally,males CSA survivors were more likely to conduct NSSI compared with females (OR=4.28,95%CI=2.78-6.59).CSA survivors from community sample,Asian,without mental disorders have the highest risk of NSSI engagement (OR=4.45,95%CI=2.86-6.94);Asian(OR=5.31,95%CI=3.20-8.79);no mental disorder(OR=4.60,95%CI=3.38-6.26).Conclusions Individuals with childhood sexual abuse experiences have a higher risk of NSSI,association differs in gender,area and sample sources.
An analysis of outbreak of food poisoning incidents in school from 2002 to 2016
PAN Na, GUO Yunchang, LI Weiwei, FU Ping, HAN Haihong, LIU Jikai, MA Zhijie, YANG Shuxiang
2017, 38(7): 1023-1025,1029. doi: 10.16835/j.cnki.1000-9817.2017.07.018
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Objective To analyze the rules and characteristics of food poisoning events in school reported in domestic literature from 2002 to 2016,and provide scientific basis for prevention and control of food poisoning in school.Methods With "food poisoning","food-borne diseases" and "outbreak" as subject terms,we employed the method of literature analysis to analyze food poisoning events in school that have been reported in domestic literature.And the descriptive epidemiological analysis was conducted based on events.Results A total of 557 literature reports of food poisoning in school were collected.33 467 cases were reported to suffer from food poisoning,16 564 cases were hospitalized,but no death were reported.Most of the food poisoning occurred in April-June,September-November;Most cases were reported to be found in Eastern China(168,30.16%).Multiple factors were the top reasons for the events,followed by improper processing,improper storage;Problematic food were mainly grain,vegetables and meat,which accounted for 17.41%,10.77% and 7.54% of total,respectively.The main pathogenic factors were biological contaminants,accounting for 70.56% of the total events.Conclusion Schools should attach importance to food safety and strength measures to control biological pollutants in summer and autumn in order to reduce the occurrence of food poisoning in school.
Association between reasons for living and left-behind experiences among college freshmen
ZHANG Minting, ZHAO Jingbo, HOU Yanfei, ZHAO Jiubo
2017, 38(7): 1026-1029. doi: 10.16835/j.cnki.1000-9817.2017.07.019
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Objective To explore the association between reasons for living with left-behind experiences among college freshmen,and to provide information for suicide prediction and prevention.Methods A total of 3 133 freshman from a university in Guangzhou were chosen by random cluster sampling and investigated with Reasons for Living Inventory for Adolescents (RFL-A) on September,2014.Results The scores of reasons for living,family alliance,peer acceptance and support and self-acceptance among college freshmen with left-behind experience (4.94±0.56,5.12±0.67,4.84±0.69,5.16±0.65) were significantly lower than those without left-behind experience (5.00±0.57,5.22±0.66,4.92±0.71,5.24±0.65).The difference was statistically significant (P<0.01).The scores of family alliance and self-acceptance among those with one migrant parent (5.18±0.67,5.21±0.66) was significantly higher than those with parents both went out (5.06±0.67,5.10±0.63).The difference was statistically significant(P<0.05).The scores of suicide-related concerns,family alliance,peer acceptance and support,as well as reasons for living among left-behind experience during 13-18 years old was the highest (F=3.953,5.980,3.638,5.747,P<0.05).The scores of suiciderelated concerns,family alliance and reasons for living among students with contacts with parents once a week/two weeks was the highest(F=5.954,15.566,11.373,P<0.01).Frequency in contacting with migrant parents had significant main effects on reasons for living(F=5.950,P<0.01).Conclusion Reasons for living among undergraduate with left-behind experience are lower compared with counterparts without left-behind experience.The real reasons influencing reasons for living among those college freshmen might correlate more with attachment with parents.
Quality and effect of pit and fissure sealants applied to the first permanent molar among children in Pudong New Area
TU Bin, FAN Yingzi, WANG Xudong, CHEN Fangrong
2017, 38(7): 1030-1032. doi: 10.16835/j.cnki.1000-9817.2017.07.020
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Objective To evaluate the quality and effect of pit and fissure sealants applied to the first permanent molar among children in Pudong New Area,and to provide basis for popularizing pit and fissure sealants applied to the first pemanent mular among children.Methods Totally 605 children who had received pit and fissure sealant in the first permanent molar in Pudong New Area during 2012-2014,and 176 children who had not received pit and fissure sealant in 2012,were randomly selected.Retention of the pit and fissure sealants and prevalence of first permanent molar caries was evaluated.Results The retention rate of pit and fissure sealant among children of grade 1-3 was 80.26%,70.83% and 60.43%,respectively;The difference was statis tically significant(x2 =16.46,P<0.01).Prevalence of first permanent molar caries was significantly lower in intervention group than that of the control group(4.10% vs 7.20%,x2 =6.41,P<0.05).Conclusion As one of the free public health services,the pit and fissure sealants among children can effectively prevent the occurrence of the first permanent molar caries.
A study on the influence of social capital on health behaviors of adolescents in Hebei
ZHANG Hongjie, CHEN Wei, WANG Jianhui, AN Yu, LI Hui
2017, 38(7): 1032-1034. doi: 10.16835/j.cnki.1000-9817.2017.07.021
Abstract(303) PDF(3)
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Objective To explore the status of adolescent social capital and its impact on health behavior,so as to provide a reference for the health behavior intervention.Methods A survey was conducted among 1 595(male 825,female 770) adolescents in Hebei province by using the healthy lifestyle scale and the youth social capital scale.Results There were statistically significant differences in gender,household registration,and grade of adolescent social capital(P<0.05).The score of social capital of high score group was 1.84-2.98,and that of the low group was 1.69-2.34.High group has better social capital.The physical behavior of adolescents was influenced by social capital most (6 items),(OR =2.102-1.554),followed by stress treatment,interpersonal relationships and nutritional behavior (OR=1.716-1.546,1.689-1.643,2.590-0.635).And the health responsibility and self realization were the least influential factors(OR =1.965-1.565,1.764-1.597).Conclusion The adolescent health behavior is greatly influenced by social capital,so we should take appropriate interventional measures to guide young people to use social capital scientifically.
Comparative study of the effect of perfluoroalkyl substances exposure on children's lung function
YANG Jiewen, QIN Xiaodi, LI Yongling, DONG Guanghui
2017, 38(7): 1035-1038. doi: 10.16835/j.cnki.1000-9817.2017.07.022
Abstract(367) PDF(5)
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Objective To evaluate the effect of polyfluoroalkyl substances (PFAAs) exposure on children's lung function,and to provide a reference for making effective measures to protect children's cardio-pulmonary function.Methods A total of 132 asthmatic children were selected from the affiliated hospital of National Taiwan University,and the other 168 non-asthmatic children were chosen from 7 public middle schools in Taipei.Multivariable and logistic regression models were used to examine the influence of PFAAs on lung function parameters and asthmaoutcomes.Results Children were prone to suffer from asthma with the increase of the concentration of PFAAS.And with the adjusted odds ratios (ORs) ranged from 1.32(95% CI--1.02-1.71) for the perfluorooctanesulfonate (PFOS) to 2.80 (95%CI=1.87-4.20) for perfluorooctanic acid (PFOA).When stratified by sex,more significant associations were found in males than in females.PFAAs and PFOA were negatively associated with lung function parameters (FVC,FEV1 and FEF25%-75%) among male asthmatics.For instance,if the levels of PFOS and PFOA increased by 1 μg/L in their serum,FEV1 may decrease by-0.062(95%CI=-0.0106--0.018) and-0.099 L(95%CI=-0.0197--0.001).Conclusion PFAA exposure can impair children's lung function,and and more significant associations were found in males than in females.
Association between birth weight and obesity among children in Dongcheng District of Beijing
LIU Jue, LI Qin, CHENG Yu, GAO Aiyu, WANG Haijun
2017, 38(7): 1039-1042. doi: 10.16835/j.cnki.1000-9817.2017.07.023
Abstract(254) PDF(3)
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Objective To explore the association between birth weight and obesity in children,and to provide references for making preventive measures for the high-risk children of obesity.Methods A total of 1 574 children aged 7-11 years from 12 primary schools in Dongcheng district of Beijing were selected to have a physical examinationincluded in the study.The data of Their their body weight and height was measured to calculate the body mass index.Questionnaires were used to collect relevant information including birth weight,screen-based sedentary behaviors,moderate to vigorous physical activity and dietary status.Logistic regression model was employed to analyze the association between birth weight and obesity after adjustment of other potential risk factors.Results The total prevalence of overweight and obesity in normal birth weight group,low birth weight group and macrosomia group were 31.99%,27.03% and 46.33%,respectively.The prevalence of obesity were 17.43%,21.62% and 28.81% in the three groups(x2 =15.17,13.50,P<0.01).Logistic models showed that the risk of obesity during childhood in macrosomia group was 1.76 times higher than that in normal birth weight group(95%CI=1.17-2.67).The difference of obesity prevalence during childhood between low birth weight group and normal birth weight group was not statistically significant(OR=1.45,95%CI=0.56-3.75).Conclusion Macrosomia is independently associated with childhood obesity.In addition to the diet,behavior,genetic factors,the childhood obesity in the early stage should also be focused on to prevent the childhood obesity.
Analysis on injury surveillance among migrant children in Nanshan District of Shenzhen from 2011 to 2015
GONG Jiahui, WANG Changyi, MA Jianping, LI Yanni, OUYANG Binfa, ZHAO Dan
2017, 38(7): 1043-1045. doi: 10.16835/j.cnki.1000-9817.2017.07.024
Abstract(239) PDF(4)
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Objective To analyze the epidemiologic characteristics of injuries among migrant children in Nanshan District of Shenzhen,and provide basis for injury prevention and control among children.Methods Injury occurrence data of migrant children aged 0-18,who firstly treated in Nanshan hospital emergency department during 2011-2015,were collected,and the causes,location,characteristics,intention,severity and outcome of injury were analyzed.Results From 2011 to 2015,a total of 11 806 injury cases were reported,accounting for 5.7% of all the injury cases.Injury occurrence among boys was much higher than that of girls,with a gender ratios of 2.01:1.The four top causes of injuries were falling(52.0%),blunt injury(18.5%),animal injury (14.9%),and sharp instrument injury(7.3%).The main places where injuries occurred were homes (44.4%),public residential areas(21.0%),schools/ public areas(16.4%) and road/streets (10.2%).Regarding the characteristic of injury,the top four were bruises(53.2%),sharp injuries(34.0%),strains (7.9%) and bums (2.4%).There were significantly statistical differences in the causes,locations,and characteristics of injury among children of different age groups(Z=3.89,44.37,14.06,P<0.01).Most of injury cases were unintentional (99.0%);most injuries (96.0%) were mild superficial injuries and 96.1% of the patients could be discharged from hospital after treatments.Conclusion The causes of injury in migrant children are closely related to children's gender and age.Cooperation in many departments should be made to take targeted measures to prevent and control injuries of migrant children.
Application of Generalized Additive Model in the research of influence of meteorological factors and hand foot and mouth disease
PAN Jie, LI Mengmeng, ZHU Xiaoyu, HUANG Hanming, PAN Xiaochuan
2017, 38(7): 1046-1048. doi: 10.16835/j.cnki.1000-9817.2017.07.025
Abstract(291) PDF(9)
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Objective To investigate the influence of meteorological factors on the incidence of hand,foot and mouth disease (HFMD),and to provide scientific basis for the prevention and control strategies of HFMD.Methods Generalized additive model (GAM) with Quasi-Poisson function to analyze the relationship between the weekly cases of HFMD and meteorological factors in Haidian District of Beijing from 2008 to 2014.Results There were reported 33 704 cases of HFMD in Haidian District during 2008-2014,the weekly average was 92 cases,the incidence rate was 143.8/10 million people.And there were 20 718 males and 12 986 females,the sex ratio of male to female was 1.60:1.There were no one month without cases of HFMD in every year.The peak incidence was mainly concentrated in the 5-8 months,and there were 24 460 cases totally,accounting for 72.57% of the total incidence.The overall trend of the incidence showed an increase 2008-2014,the lowest was 94.2/10 million people (2 904 cases)in 2009,and the highest was 216.9/10 million people (7 115 cases) in 2010.The incidence of HFMD showed significant seasonality,mainly concentrated in summer and autumn.With one unit increasing exceed the threshold of average temperature,relative humidity and sunshine hours (9.1 ℃,40.2%,7.7 h),the incidence of HFMD significantly increased 4.81%(3.99%-5.64%),0.30% (0.10%-0.50%),2.02%(0.63%-3.43%).And with one unit decreasing below 1 014.5 kPa of air pressure,the incidence of HFMD significantly increased 5.76%(4.52%-7.01%).Conclusion This study suggests that meteorological factors may be an important factor for the incidence of HFMD,which should be considered in prevention and control frameworks of HFMD in the future.Furthermore,GAM can be used to examine the relationship between HFMD and meteorological factors.
A case-control study on risk factors of injury among rural school-aged children in a county
GUO Qing, XIANG Bing, LI Yan, ZHANG Xiang, YANG Mei
2017, 38(7): 1049-1050,1054. doi: 10.16835/j.cnki.1000-9817.2017.07.026
Abstract(360) PDF(3)
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Objective To explore associated factors for injury in school-age children in rural areas,and to provide evidence for childhood injury prevention.Methods Data was collected by questionnaire survey in 2 196 school-aged children who were recruited from 3 primary schools and 3 junior high schools in rural areas of a county through stratified cluster sampling.Totally 354 children who had been injured were selected as case group.The 1:1 matched in same class,age,gender case-control study was used.Results In the past year,354 children had been injured.The incidence of injury number was 16.12%;375 person-time had been injured.The iucidence of injury pensum-time was 17.08%.The conditional logistic regression showed that the protective factor for injury included non-left-behind experiences(OR=0.467,95%CI=0.248-0.987),while risk factors included undesirable physical condition(OR=1.801,95%CI=1.187-2.733),history of injury(OR=3.161,95%CI=1.611-6.203) and non-only-child(OR=2.071,95%CI=1.413-3.037).Conclusion The incidence of injury in rural school-aged children is relatively high.Self-protection consciousness among children plays an important role in injury prevention.
A multi-level analysis of association between fast-food restaurants around schools and obesity among primary students in a district of Beijing
CHENG Yu, LI Qin, GAO Aiyu, WANG Jingxue, MO Ran, YAN Yiceng, ZHANG Zefei, DUAN Jiali, WANG Haijun
2017, 38(7): 1051-1054. doi: 10.16835/j.cnki.1000-9817.2017.07.027
Abstract(268) PDF(6)
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Objective To explore the association between the number of fast-food restaurants around schools and obesity among primary students,and to provide a scientific evidence for the making preventive measures of childhood obesity.Methods Cluster random sampling method was employed to select 822 students from grade 3-5 in 10 primary schools in one urban district of Beijing.And their body weight and height were measured.The fast-food restaurants within an 800 m buffer of school centroids were searched through Baidu Map.Other information associated with obesity,such as age,gender,dietary behaviors,physical activity,screen-based sedentary behaviors of students and body weight,height,education of parents,were obtained through questionnaires.A two-level logistic regression model was used to examine the association between fast-food restaurants around schools and obesity among primary students while controlling for other individual and family factors.Results The average number of fast-food restaurants around the 10 schools was(4.20-±2.74).The prevalence of obesity was 8.64% among primary students,12.50% among boys and 4.83% among girls.The differences were of statistical significance(x2 =15.315,P<0.01).Without controlling for other individual and family factors,the number of the fast-food restaurants around schools was a risk factor for childhood obesity with the OR of 1.092(95%CI:1.001-1.190).After controlling for these factors,the association still existed with the OR of 1.138(95%CI:1.030-1.258).Conclusion The number of the fast-food restaurants around schools was a risk factor for childhood obesity and had an independent influence onobesity among primary students.
Impact of exercise duration and intensity during physical education class on body composition among junior high school students
WU Haitan, JI Liu
2017, 38(7): 1055-1058. doi: 10.16835/j.cnki.1000-9817.2017.07.028
Abstract(297) PDF(3)
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Objective To examine the effects of exercise duration and intensity on body composition among junior high school students,and to provide scientific basis for arranging the effective amount of exercise for junior high school students.Methois A total of 226 students from 6 classes participated this experimental trial.Different duration×intensity exercise elements were introduced into physical education class (40 min 3 times a week for 8 weeks),including 15,10 or 5 minutes vigorous and moderate exercise.Results The results showed no significant differences in the body mass index and waist-hip ratio pre-and post-experimental trial.Significant difference in somatic fat volume was only observed in group 6;for the fat free mass index,significant differences were found in group 2,group 3,group 4,group 5,group 6.The difference of PBF and PFFM was not statistically significant in each class students.For the lean muscle mass index,significant changes were observed in the experimental group 2,group 4,group 5 and group 6(P<0.05).There was significant differences in percentage of lean muscle mass index for experiment group 1,group 4,group 6(P<0.05).Conclusion Vigorous exercise for 10 min and moderate exercise for 15 min can increase percentage of fat free mass and decrease percentage of body fat.Vigorous exercise for 10 to 15 min and moderate exercise for 15 min during physical education class can help increase percentage of lean muscle mass.
Study on the correlation between nutritional status, body fat and the onset of menarche among Han female students in Guangdong Province
XIA Liang, NIE Shaoping
2017, 38(7): 1059-1062. doi: 10.16835/j.cnki.1000-9817.2017.07.029
Abstract(370) PDF(7)
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Objective To investigate the relationship among nutritional status,body fat and the onset of menarche among pubertal females in Guangdong Province,and to provide scientific basis for making policies and interventions of improving their sexual health.Methods Stratified multistage cluster sampling method was used to select 4 782 female students aged 9-16 from Guangzhou,Zhanjiang and Shaoguan,and questionnaires and physician examination were offered to them to determine whether they experienced the onset of menarche or not and assess their nutritional status.Results It was found that among the respondents aged 9 -16 years,63% pubertal females in urban and 59% in rural area had experienced the onset of menarche.8.8% and 12.6% pubertal females were diagnosed as malnutrition in urban and rural areas,respectively while 11.5% and 7.2% were overnutrition,respectively.After the relevant factors were controlled,logistic regression indicated that compared to nutritionally-normal females,malnourished female were less likely to experience menarche(OR=0.32,P<0.05),while sleeping time is positively correlated to the onset of menarche(OR=0.77,P<0.05).Moreover,the more subcutaneous fat cumulates,the more likely menarche would occur(OR =1.03,P<0.05).Conclusion Nutritional status and skinfold thickness are found to correlate positively with the onset of menarche among the pubertal female students.Therefore,the targeted interventional measures should be made to enhance their healthy sexual development.
Study on pollution and correlation of PM2.5 in college student apartments
ZHANG Wei, WANG Lixin, ZHAO Wei, YANG Hui, HOU Shuxin
2017, 38(7): 1063-1065. doi: 10.16835/j.cnki.1000-9817.2017.07.030
Abstract(291) PDF(4)
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Objective This study was to explore the influence of outdoor environment and indoor personnel activities/behavior on PM2.5 pollution in college student apartments,and to provide scientific reference for protecting physical health of college students.Methods Indoor and outdoor PM2.5 concentrations was measured for 7 days in 9 college student apartments in Daxing District of Beijing;meanwhile,the time-behavior pattern of college students was investigated by the questionnaire.Results The apartment is the most important indoor environment for college students,and they spent 13.30 h per day staying in the apartment,accounting for 55.4%.The range of indoor PM2.5 24 h-average concentration was 39.3-584.1 μg/m3,the over-standard rate is from 66.7% to 85.7%;Outdoor PM2.5 24 h-average concentration was in the range of 76.5-493.2 μg/m3,the over-standard rate is 100%;the average of L/O ratio for indoor and outdoor PM2.5 24 h-average concentration was 0.84 during sampling period.SPSS statistical analysis results showed that indoor PM2.5 concentration was significantly correlated with outdoor PM2.5 concentration,the temperature difference between indoor and outdoor,outdoor relative humidity and wind speed(r =0.792,-0.535,-0.634,-0.547,P<0.01);the influence of indoor personnel activities/behavior on indoor PM2.5 concentration and I/O ratio was also important(P<0.05).Conclusion Influenced by outdoor environment and indoor personnel,indoor PM2.5 pollution is serious in college student apartments.People should take appropriate measures to reduce indoor PM2.5 pollution in the college student apartments.
2017, 38(7): 1066-1068. doi: 10.16835/j.cnki.1000-9817.2017.07.031
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2017, 38(7): 1069-1071. doi: 10.16835/j.cnki.1000-9817.2017.07.032
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2017, 38(7): 1072-1073. doi: 10.16835/j.cnki.1000-9817.2017.07.033
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2017, 38(7): 1074-1076. doi: 10.16835/j.cnki.1000-9817.2017.07.034
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2017, 38(7): 1076-1079. doi: 10.16835/j.cnki.1000-9817.2017.07.035
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2017, 38(7): 1080-1083. doi: 10.16835/j.cnki.1000-9817.2017.07.036
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2017, 38(7): 1083-1085. doi: 10.16835/j.cnki.1000-9817.2017.07.037
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2017, 38(7): 1086-1088. doi: 10.16835/j.cnki.1000-9817.2017.07.038
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2017, 38(7): 1088-1091. doi: 10.16835/j.cnki.1000-9817.2017.07.039
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2017, 38(7): 1092-1095. doi: 10.16835/j.cnki.1000-9817.2017.07.040
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2017, 38(7): 1095-1097. doi: 10.16835/j.cnki.1000-9817.2017.07.041
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2017, 38(7): 1098-1101. doi: 10.16835/j.cnki.1000-9817.2017.07.042
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2017, 38(7): 1102-1104. doi: 10.16835/j.cnki.1000-9817.2017.07.043
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2017, 38(7): 1104-1106. doi: 10.16835/j.cnki.1000-9817.2017.07.044
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2017, 38(7): 1107-1109. doi: 10.16835/j.cnki.1000-9817.2017.07.045
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2017, 38(7): 1110-1111. doi: 10.16835/j.cnki.1000-9817.2017.07.046
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2017, 38(7): 1112-1114. doi: 10.16835/j.cnki.1000-9817.2017.07.047
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2017, 38(7): 1114-1117. doi: 10.16835/j.cnki.1000-9817.2017.07.048
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2017, 38(7): 1118-1120. doi: 10.16835/j.cnki.1000-9817.2017.07.049
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