Table 1 Maternal characteristics by thyroid status
Characteristic | Euthyroid (n = 500) | Hypothyroid (n = 250) | Hyperthyroid (n = 150) | p-value |
|---|---|---|---|---|
Mean age (SD) | 30.2 (5.1) | 31.5 (4.8) | 29.8 (5.0) | 0.07 |
Nulliparous | 275 (55%) | 140 (56%) | 75 (50%) | 0.245 |
Median TSH level (IQR) | 2.5 (2.0-3.1) | 4.2 (3.8–5.5) | 0.03 (0.02–0.04) | <0.001** |
Obese (BMI ≥ 25) | 100 (20%) | 70 (28%) | 20 (13%) | 0.007* |
Tobacco use | 50 (10%) | 30 (12%) | 20 (13%) | 0.569 |