Table 2.
The baseline data of pregnant women with positive-TPOAb and those with negative-TPOAb.
| Variables | TPOAb-negative (n = 6700) |
TPOAb-positive (n = 346) |
P |
|---|---|---|---|
| age (years), median (IQR) | 26.0 (24.0-29.0) | 27.0 (25.0-30.0) | 0.027 |
| gestational week of blood collection, median (IQR) | 31.9 (17.6-38.7) | 26.5 (13.7-38.4) | 0.001 |
| gestational week at delivery, median (IQR) | 39.6(38.7-40.3) | 39.6(38.7-40.3) | 0.819 |
| menopausal history, N (%) | 0.472 | ||
| No | 5598 (83.6) | 284 (82.1) | |
| Yes | 1102 (16.4) | 62 (17.9) | |
| education level, N (%) | 0.122 | ||
| Compulsory school | 2816 (42.0) | 160 (46.2) | |
| Upper secondary school | 3884 (58.0) | 186 (53.8) | |
| gestational diabetes, N (%) | 0.673 | ||
| No | 6417 (95.8) | 333 (96.2) | |
| Yes | 283 (4.2) | 13 (3.8) | |
| gestational hypertension, N (%) | 0.441 | ||
| No | 6586 (98.3) | 342 (98.8) | |
| Yes | 114 (1.7) | 4 (1.2) | |
| TGAb, N (%) | <0.001 | ||
| No | 6558 (97.9) | 214 (61.8) | |
| Yes | 142 (2.1) | 132 (38.2) | |
| TSH (mIU/L), median (IQR) | 1.72 (1.18-2.50) | 1.94 (1.27-2.60) | 0.029 |
| FT4 (ng/L), median (IQR) | 7.01 (6.27-7.83) | 7.04 (6.28-7.82) | 0.533 |
IQR, interquartile range; TPOAb, anti-thyroid peroxidase antibodies; TGAb, anti-thyroglobulin antibodies; TSH, thyroid-stimulating hormone; FT4, free thyroxine.