Thyroid disorders in pregnancy: frequency and association with selected diseases and obstetrical complications in Tunisian women.

Objective: To determine the prevalence of thyroid disorders (TDs) and identify groups at risk for TDs in Tunisian pregnant women.

Methods: Thyroid-stimulating hormone (TSH) and anti-thyroid peroxidase antibodies (TPO-Ab) were determined in 1519 pregnant women. Thyroid disorder was defined as hyperthyroidism (TSH< or =0.