Table 4 The neonatal outcomes of patients among groups A-B stratified by 35Â years of age
|  |  < 35 years of age |  ≥ 35 years of age | ||||
|---|---|---|---|---|---|---|
Group A | Group B | P | Group A | Group B | P | |
Cycles (n) | 198 | 207 | Â | 48 | 50 | Â |
Preterm birth (< 37 weeks) | 8.08 (16/198) | 11.59 (24/207) | 0.236 | 10.42 (5/48) | 12.00 (6/50) | 0.804 |
 Singleton | 8.08 (16/198) | 11.11 (23/207) | 0.301 | 10.42 (5/48) | 10.00 (5/50) | 1.000 |
 Twin | 0 (0/198) | 0.48 (1/207) | 1.000 | 0 (0/48) | 2.00 (1/50) | 1.000 |
Gestational age (weeks) | 38.56 ± 1.61 | 38.38 ± 1.76 | 0.421 | 38.27 ± 1.32 | 37.80 ± 2.37 | 0.209 |
 Singleton | 38.57 ± 1.61 | 38.41 ± 1.76 | 0.468 | 38.27 ± 1.32 | 38.20 ± 1.29 | 0.828 |
 Twin | / | / |  | / | / |  |
Birth height (mm) | 49.86 ± 1.90 | 49.82 ± 1.97 | 0.495 | 49.64 ± 1.70 | 49.48 ± 2.66 | 0.205 |
 Singleton | 49.90 ± 1.86 | 49.86 ± 1.95 | 0.423 | 49.64 ± 1.70 | 49.89 ± 1.79 | 0.856 |
 Twin | / | / |  | / | / |  |
Birth weight (kg) | 3224.27 ± 467.13 | 3186.73 ± 530.87 | 0.273 | 3303.65 ± 590.94 | 3221.96 ± 595.62 | 0.799 |
 Singleton | 3228.12 ± 467.88 | 3196.76 ± 530.90 | 0.316 | 3303.65 ± 590.94 | 3303.47 ± 443.37 | 0.179 |
 Twin | / | / |  | / | / |  |
Low birth weight (< 2500 g) | 6.03 (12/199) | 8.13 (17/209) | 0.408 | 6.25 (3/48) | 7.84 (4/51) | 1.000 |
 Singleton | 6.03 (12/199) | 8.13 (17/209) | 0.408 | 6.25 (3/48) | 3.92 (2/51) | 0.945 |
 Twin | 0 (0/199) | 0 (0/209) | / | 0 (0/48) | 3.92 (2/51) | 0.495 |
Very low birth weight (< 1500 g) | 0 (0/199) | 0.48 (1/209) | 1.000 | 0 (0/48) | 3.92 (2/51) | 0.495 |
 Singleton | 0 (0/199) | 0.48 (1/209) | 1.000 | 0 (0/48) | 0 (0/51) | / |
 Twin | 0 (0/199) | 0 (0/209) | / | 0 (0/48) | 3.92 (2/51) | 0.495 |