Effectiveness of a comprehensive intervention for childhood obesity on self-efficacy, weight perception, and behavior change
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摘要:
目的 探讨儿童肥胖综合干预对自我效能、体重认知和行为改变阶段的作用, 为儿童肥胖的干预提供科学依据。 方法 研究设计为整群随机对照人群试验。2013年9月在北京市东城区选取12所小学的1 889名儿童(7~11岁), 开展肥胖综合干预。6所学校(930名)被随机分配至干预组, 6所学校(959名)被随机分配至对照组, 干预时长为1年。对研究对象开展面对面问卷调查, 使用R 4.0.3软件分析数据, 并采用多元线性回归模型分析干预效果。 结果 干预后, 干预组与对照组儿童自我效能评分分别为(4.4±0.9)和(4.2±1.1)分。干预后, 干预组低估和高估自我体重的比例分别为28.4%和11.3%, 对照组则为37.1%和6.9%;相比对照组, 干预组儿童低估体重的风险降低(OR=0.64, 95%CI=0.52~0.80, P<0.01), 高估体重的风险增加(OR=1.79, 95%CI=1.26~2.54, P<0.01)。干预后, 干预组儿童处于行为改变意向阶段和行动阶段的比例分别为65.3%和83.6%, 对照组则为59.8%和69.8%;相比于对照组, 干预组更多儿童在行为改变中转变为意向阶段(OR=1.28, 95%CI=1.03~1.59, P=0.02)和行动阶段(OR=2.59, 95%CI=2.04~3.27, P<0.01)。 结论 儿童肥胖综合干预对提高自我效能、改善体重认知和促进行为改变有积极作用, 但会增加高估体重的风险。 Abstract:Objective To evaluate the effectiveness of a comprehensive intervention for childhood obesity on self-efficacy, weight perception, and stage of behavior change, and to provide a scientific evidence for childhood obesity interventions. Methods The study was a cluster-randomized controlled trial. Twelve primary schools and 1 889 children (aged 7-11 years) from Dongcheng District in Beijing were recruited in September, 2013, and were administered a comprehensive intervention for childhood obesity. Six schools (930) were randomly allocated to the intervention group, and six schools (959) were randomly allocated to the control group. A face-to-face questionnaire survey was carried out, R 4.0.3 software was used to analyze the data, and multiple linear regression model was used to analyze the intervention effect. Results After the intervention, mean (standard deviation) scores of self-efficacy among children in the intervention and control groups were (4.4±0.9) and (4.2±1.1), respectively. After the intervention, the proportion of children in the intervention group who underestimated or overestimated their body weight was 28.4% and 11.3%, respectively, while the figures in the control were 37.1% and 6.9%; compared with the control, the risk of underestimating body weight decreased among children in the intervention group(OR=0.64, 95%CI=0.52-0.80, P<0.01), while the risk of weight overestimation increased(OR=1.79, 95%CI=1.26-2.54, P<0.01). After the intervention, the proportion of children in the contemplation or action stage of behaviour change was 65.3% and 83.6%, while the figures in the control group were 59.8% and 69.8%, respectively; in comparison with the control group, more children in the intervention group were in comtemplation (OR=1.28, 95%CI=1.03-1.59, P=0.02) or action stage of behaviour change(OR=2.59, 95%CI=2.04-3.27, P<0.01). Conclusion The comprehensive intervention for childhood obesity improved self-efficacy, weight perception, and facilitated behavior change, but may increase the risk of weight overestimation. -
Key words:
- Obesity /
- Intervention studies /
- Body weight /
- Cognition /
- Behavior /
- Child
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表 1 儿童肥胖综合干预对自我效能、体重认知和行为改变阶段的作用
Table 1. Effect of the comprehensive intervention for childhood obesity on self-efficacy, weight perception, and stage of behaviour change
组别 干预前后 自我效能 体重认知 行为改变意向阶段 行为改变行动阶段 人数 自我效能较高人数 人数 低估 高估 人数 报告人数 人数 报告人数 干预组 干预前 868 673(77.5) 870 375(43.1) 54(6.2) 885 522(59.0) 896 638(71.2) 干预后 868 714(82.3) 870 247(28.4) 98(11.3) 885 578(65.3) 896 749(83.6) 对照组 干预前 907 674(74.3) 917 404(44.1) 59(6.4) 919 528(57.5) 923 679(73.6) 干预后 907 700(77.2) 917 340(37.1) 63(6.9) 919 550(59.8) 923 644(69.8) 注:()内数字为报告率/%;问卷调查收集的信息有缺失,故分析人数少于研究对象人数。 -
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