Table 1.
Baseline data table
| Control group (n=51) | Observation group (n=46) | X2 | P | ||
|---|---|---|---|---|---|
| Age (years) | < 35 | 45 (88.24) | 37 (80.43) | 1.126 | 0.289 |
| ≥ 35 | 6 (11.76) | 9 (19.57) | |||
| BMI (kg/m2) | < 18.5 | 5 (9.80) | 9 (19.57) | 1.866 | 0.172 |
| ≥ 18.5 | 46 (90.20) | 37 (80.43) | |||
| Complications during pregnancy | Gestational hypertension | 4 (9.80) | 3 (6.52) | 0.344 | 0.557 |
| Gestational diabetes mellitus | 3 (5.88) | 1 (2.17) | 0.841 | 0.359 | |
| Abortion history | Yes | 6 (11.76) | 8 (17.39) | 0.620 | 0.431 |
| No | 45 (88.24) | 38 (82.61) | |||
| Previous pregnancy history (times) | < 2 | 45 (88.24) | 37 (80.43) | 1.126 | 0.289 |
| ≥ 2 | 6 (11.76) | 9 (19.57) | |||
| Birth history | Yes | 5 (9.80) | 7 (15.22) | 0.634 | 0.419 |
| No | 46 (90.20) | 39 (84.78) | |||
| Cervical diseases | Yes | 5 (9.80) | 9 (19.57) | 1.866 | 0.172 |
| No | 46 (90.20) | 37 (80.43) | |||
| Medication history during pregnancy | Yes | 18 (35.29) | 22 (47.83) | 1.567 | 0.211 |
| No | 33 (64.71) | 24 (52.17) |