Table 2.
A comparison of the clinical features of the mothers of the infants in the two groups [n (%)]
| Weight < 1000 g group (n = 11 cases) | Weight ≥ 1000~1250 g group (n = 32 cases) | Weight ≥ 1250~1500 g group (n = 64 cases) | t/χ 2 | P | |
|---|---|---|---|---|---|
| Delivery modes | 5.52 | 0.067 | |||
| Cesarean section | 7 (63.6%) | 19 (59.4%) | 44 (68.8%) | ||
| Natural labor | 4 (36.4%) | 13 (40.6%) | 20 (31.2%) | ||
| Premature rupture of membranes | 7 (63.6%) | 21 (65.6%) | 29 (45.3%) | 3.37 | 0.214 |
| Pregnancy-induced hypertension | 5 (45.5%) | 14 (43.75%) | 21 (32.8%) | 7.29 | 0.098 |
| Gestational diabetes | 3 (27.3%) | 10 (31.25%) | 12 (18.75%) | 5.52 | 0.066 |
| Infection in the second and third trimester of pregnancy | 1 (9.1%) | 2 (3.1%) | 2 (3.125%) | 4.52 | 0.334 |
| Placental abruption | 2 (18.2%) | 4 (12.5%) | 6 (9.4%) | 8.61 | 0.253 |
| Placenta previa | 0 (0) | 1 (3.125%) | 2 (3.125%) | 13.25 | 0.313 |
Note: A significant difference is P < 0.05.