Question

The hypothesis of this study was that children born to mothers with mild iodine deficiency during pregnancy will have poorer educational outcomes in primary school than peers whose mothers did not have iodine deficiency during pregnancy. The study was a longitudinal design with follow-up when the children were 9 years old. The study participants were children born in Australia between 1999 and 2001. The mild iodine deficiency during pregnancy was followed with the children subsequently growing up in an iodine-adequate environment

1.) Which of the following factors may have confounded the observed relationship between iodine status and educational outcomes?

A. Infant sex

B. Infant birth weight

C. Maternal education and occupation

D. All of these choices are correct

Answer 1

Infant sex, infant birth weight, and maternal education and occupation may have confounded the relationship between iodine status and educational outcomes in the study. The correct option is D. All of these choices are correct.

Step-by-step explanation:

In this study, the hypothesis was that children born to mothers with mild iodine deficiency during pregnancy would have poorer educational outcomes than those born to mothers without iodine deficiency. However, several factors could have confounded the observed relationship between iodine status and educational outcomes. These factors include infant sex, infant birth weight, and maternal education and occupation. Therefore, the correct answer is All of these choices are correct.