ISRCTN41848933已完成未知
Maternal iodine intake and offspring attention deficit-hyperactivity disorder
The Research Council of Norway0 个研究点目标入组 77,164 人开始时间: 2017年9月14日最近更新:
适应症
试验速览
- 阶段
- 未知
- 状态
- 已完成
- 发起方
- 入组人数
- 77,164
研究概览
简要总结
2017 Results article in https://www.ncbi.nlm.nih.gov/pubmed/29137191 results 2016 Results article in https://pubmed.ncbi.nlm.nih.gov/27063603/ (added 23/08/2022)
研究设计
- 研究类型
- Observational
入排标准
- 性别
- All
入选标准
- •1. Pregnant women in their first trimester recruited from all over Norway during the years 1999 to 2008 and asked to answer questionnaires (in Norwegian) at regular intervals during pregnancy and after birth
- •2. To be included in the current study mothers had to have responded to a general questionnaire around gestational week (GW) 17, and a food frequency questionnaire (FFQ) around GW 22
- •3. Only singleton pregnancies
- •4. Only participants with information on all covariates were included in the analysis because of the large sample size and low rates of missing values
- •5. Pregnant women at any age were allowed to participate
排除标准
- •1. Multiple pregnancies
- •2. Maternal use of thyroid medication in pregnancy
- •3. Missing information on important covariates
- •4. Children registered as dead or emigrated by Jan 2016
- •5. FFQs with more than 3 blank pages
- •6. Calculated energy intakes <4.5 MJ or >20 MJ
研究者
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