Table 3 Thyroid volume and its relationship with trimester and use of iodised salt
|  | Thyroid volume ≤ 18 mL | Thyroid volume > 18 mL |
|---|---|---|
n (%) | n (%) | |
Trimester | ||
 First (n = 53) | 52 (98.1) | 1(1.9) |
 Second (n = 74) | 71 (96.0) | 3 (4.1) |
 Third (n = 112) | 109 (97.3) | 3 (2.7) |
Use of Iodised Salt | ||
 Yes (n = 109) | 108 (99.1) | 1 (0.9) |
 No (n = 130) | 124 (95.4) | 6 (4.6) |