Iodine nutritional status of children aged 8-10 in Wuhan from 2019 to 2023

WANG Shuai; CHEN Fang; YANG Yan; LUO Huatang; LIU Cong; XU Wenxiu

doi:10.16835/j.cnki.1000-9817.2025175

Volume 46 Issue 6

Jun. 2025

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WANG Shuai, CHEN Fang, YANG Yan, LUO Huatang, LIU Cong, XU Wenxiu. Iodine nutritional status of children aged 8-10 in Wuhan from 2019 to 2023[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(6): 792-796. doi: 10.16835/j.cnki.1000-9817.2025175

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WANG Shuai, CHEN Fang, YANG Yan, LUO Huatang, LIU Cong, XU Wenxiu. Iodine nutritional status of children aged 8-10 in Wuhan from 2019 to 2023[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(6): 792-796. doi: 10.16835/j.cnki.1000-9817.2025175

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Iodine nutritional status of children aged 8-10 in Wuhan from 2019 to 2023

doi: 10.16835/j.cnki.1000-9817.2025175

Institute of Schistosomiasis and Endemic Disease Control, Wuhan Center for Disease Control and Prevention, Wuhan (430021), Hubei Province, China

Received Date: 2024-12-02
Rev Recd Date: 2025-02-28

Available Online: 2025-07-04

Publish Date: 2025-06-25

Abstract

Abstract

Objective To explore the iodine nutrition status of children in Wuhan from 2019 to 2023, and to evaluate the effect of iodine deficiency disorders control in focus groups in Wuhan, so as to provide a basis for consolidating elimination of iodine deficiency disorders. Methods A total of 13 000 non-boarding primary school students aged 8-10 were selected from 13 districts of Wuhan by stratified random sampling method.Household salt samples were collected to measure salt iodine content, random urine samples were analyzed for urinary iodine concentration. And B-ultrasound was used to measure thyroid volume in students. The median of salt iodine, coverage rate of iodized salt, consumption rate of qualified iodized salt, median of urinary iodine, and the goiter rate were calculated. And Mann-Whitney U test, Kruskal-Wallis H test and Chi-square test were applied to compare between groups. Chi-square trend test was used to analyze the changing trends of coverage rate of iodized salt, consumption rate of qualified iodized salt and goiter rate among children in Wuhan. Results The median of iodine content of children's household salt was 23.8 (21.7, 26.1) mg/kg, and the coverage rate of iodized salt was 98.7%, and the consumption rate of qualified iodized salt was 94.5%. The consumption rates of qualified iodized salt showed an overall upward trend from 2019 to 2023 (χ_trend²=5.57, P < 0.05). The median of urinary iodine of children was 220.1 (136.7, 326.0) μg/L, and boys had higher median of urinary iodine than girls (Z=6.60, P < 0.01). The median of urinary iodine of children in suburbs was higher than those in urban areas (Z=11.00, P < 0.01). A total of 4 600 children were examined for thyroid volume, and the range of goiter rates were 1.1% to 3.4%, with an average goiter rate of 2.5%, which showed an overall downward trend from 2019 to 2023 (χ_trend²=5.11, P < 0.05). Conclusions The iodine nutrition is sufficient and iodine nutrition status is good among children in Wuhan. It should continue to carry out monitoring and evaluation of children's iodine nutrition, guide the public to supplement iodine scientifically, so as to maintain the appropriate level of iodine for children.
- Iodine,
- Nutritional status,
- Child,
- Eligibility detemination

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References(23)

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