Variables | The second child is fetal macrosomia (n, %, mean ± SD) | The second child is non-fetal macrosomia (n, %, mean ± SD) | χ2/t | p value |
---|---|---|---|---|
The first child is fetal macrosomia | ||||
 Yes | 2 (5.5) | 22 (4.7) |  |  |
 No | 34 (94.5) | 446 (95.3) | 0.000 | 0.999 |
Maternal age (years) | 27.75±2.39 | 28.88±3.45 | − 2.620 | 0.012* |
Maternal height (m) | 161.61±5.00 | 160.92±4.85 | 0.819 | 0.413 |
Delivery weight (kg) | 63.92±8.01 | 61.99±8.41 | 1.332 | 0.184 |
Maternal BMI (kg/m2) | 24.47±2.95 | 23.94±3.09 | 1.006 | 0.315 |
Gestational diabetes mellitus | ||||
 Yes | 2 (5.5) | 16 (3.4) |  |  |
 No | 34 (94.5) | 452 (96.6) | 0.040 | 0.842 |
Gestational hypertension | ||||
 Yes | 2 (5.5) | 20 (4.3) |  |  |
 No | 34 (94.5) | 448 (95.7) | 0.000 | 0.999 |
Physical activity time (daily) | ||||
 < 30 min | 34 (94.5) | 376 (80.3) |  |  |
 ≥ 30 min | 2 (5.5) | 92 (19.7) | 4.382 | 0.036* |
Fetal gender | ||||
 Male | 20 (55.6) | 249 (53.2) |  |  |
 Female | 16 (44.4) | 219 (46.8) | 0.074 | 0.785 |