Iodine Deficiency Disorders as a Predictor of Stunting among Primary School Children in the Aseer Region, Southwestern Saudi Arabia.

The present study involved 3046 school-age pupils. The study disclosed a total goiter rate of 24.0% (95% CI: 22.5-25.5%). The median urinary iodine content (UIC) was 17.0 µg/L. A prevalence of stunting (height for age z score of less than -2) of 7.8% (95% CI: 6.9-8.8%) was found. In a logistic regression model, pupils having clinical goiter (aOR = 1.739; 95% CI: 1.222-2.475) and students having UIC of less than 17 µg/L (aOR = 1.934; 95% CI: 1.457-2.571) were considerably related with stunting. In the receiver operating characteristic (ROC) curve, urinary iodine content to forecast stunting was good (AUC = 0.611, 95% CI: 0.594-0.629). The curve recognized the optimum cutoff point of urinary iodine content to be ≤19.0 µg/L. The sensitivity was 59.66% (95% CI: 53.1-66.0) and the specificity was 57.62% (95% CI: 55.8-59.5). Conclusion: The present study showed that stunting among school-aged children presents a mild public health problem. On the other hand, a severe iodine deficiency situation was revealed among school children in the Aseer region. Continuous monitoring of iodine status among school children is therefore necessary. Concerted interventions that blend nutrition-sensitive with nutrition-specific approaches are expected to influence decreasing stunting significantly.