Evidence map›Paper›PMID 40889040›Full record

ArticleBiological trace element research2026

The Impact of the COVID-19 Pandemic on Iodine Nutrition Status of Pregnant Women and Infants/Toddlers: Repeated Cross-Sectional Studies in Zhengzhou, China.

Weihua Jia, Yuhui Du, Qinyang Qin, Weixia Lu, Ruili Lyu, Leizhen Duan, Fangfang Yu, Yuanqing Zhang, Yue Ba, Qiuming Wang and 1 more

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Article in Biological trace element research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Weihua Jia *Department of Endemic Diseases, Zhengzhou Center for Disease Control and Prevention, Zhengzhou, Henan, 450006, China.
Yuhui Du *National Experimental Teaching Demonstration Center of Public Health and Preventive Medicine, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
Qinyang QinDepartment of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
Weixia LuDepartment of Endemic Diseases, Zhengzhou Center for Disease Control and Prevention, Zhengzhou, Henan, 450006, China.
Ruili LyuDepartment of Endemic Diseases, Zhengzhou Center for Disease Control and Prevention, Zhengzhou, Henan, 450006, China.
Leizhen DuanZhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, 450001, China.
Fangfang YuDepartment of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
Yuanqing ZhangSchool of E-Commerce, Henan Institute of International Business and Economics, Kaifeng, Henan, 475000, China.
Yue BaDepartment of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.
Qiuming WangDepartment of Obstetrics and Gynaecology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, China. wangqm123@zzu.edu.cn.
Guoyu ZhouDepartment of Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China.

Funding

the Henan Provincial Science and Technology Department Research Project 242102310118the Natural Science Foundation of Henan 252300420086
6 · The paper itself

Abstract

Iodine nutrition in pregnant women and infants/toddlers is a critical public health indicator, yet the impact of the COVID-19 pandemic on iodine status remains unclear. Using data (2014-2022) from 139,163 pregnant women and 30,761 infants/toddlers aged 0-2 years in Zhengzhou, we explored effects of the pandemic on iodine nutrition through stratified inter-group analyses and seasonal autoregressive integrated moving average (SARIMA) modeling. Pregnant women and infants/toddlers had adequate iodine, with urinary iodine concentration (UIC) of 192.66 μg/L and 213.19 μg/L, respectively, both exceeding WHO thresholds for iodine sufficiency (150 μg/L for pregnant women and 100 μg/L for infants/toddlers). During the pandemic, significantly lower UICs were observed in urban pregnant women aged ≤ 30 years (2nd/3rd trimesters), rural pregnant women (1st/2nd trimesters), and rural infants (0-12 months) on formula/mixed feeding, compared with those in pre-pandemic. Notably, rural breastfed infants/toddlers had higher UICs during the pandemic than those before. Pre-pandemic data (2014-2019) yielded well-fitting SARIMA models, SARIMA(2,0,3)(2,1,2)

Indexed as

COVID-19IodineNutritional StatusAdultChild, PreschoolChinaCross-Sectional StudiesFemaleHumansInfantInfant, NewbornPandemicsPregnancySARS-CoV-2Young AdultIodineCOVID-19Infants/toddlersIodinePregnant womanSARIMA

Identifiers

PMID40889040

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.