Table 3.
Comparisons of baseline characteristics of pregnant women with iodine insufficiency and those with iodine sufficiency
| Insufficiency (n: 171) | Sufficiency (n: 219) | P‐value | |
|---|---|---|---|
| Maternal age (years) mean ± SD | 28.26 ± 5.50 | 28.13 ± 4.86 | 0.812 |
| Maternal BMI mean ± SD | 23.56 ± 2.98 | 23.34 ± 3.31 | 0.494 |
| Number of ANC visits mean ± SD | 10.64 ± 2.65 | 10.31 ± 3.42 | 0.288 |
| Gestational age (days) mean ± SD (first sampling) | 11.58 ± 4.36 | 11.30 ± 4.32 | 0.473 |
| Gestational age (week) mean ± SD (second sampling) | 18.68 ± 4.33 | 18.19 ± 4.05 | 0.063 |
| Gestational age (week) mean ± SD (third sampling) | 29.82 ± 5.34 | 29.43 ± 6.11 | 0.609 |
| Parity (nulliparous/multiparous) | 98/73 | 130/89 | 0.683 |
| Income (high/low) | 107/64 | 129/90 | 0.462 |
| Education (high/low) | 108/63 | 141/78 | 0.803 |
| Religion (Buddhism/others) | 165/6 | 202/17 | 0.077 |
| Medical disease (absence/presence) | 159/12 | 206/13 | 0.665 |
ANC, antenatal care; BMI, body mass index; SD, standard deviation.