Table 2 Patients’ characteristics and neonatal outcome after frozen-thawed cleavage-stage embryo transfer
|  | Vitrolife (n = 202) | SAGE (n = 413) | p |
|---|---|---|---|
Maternal age (years) | 30.07 ± 3.79 | 30.64 ± 3.86 | 0.08 |
Maternal weight (Kg) | 52.58 ± 7.56 | 52.24 ± 7.00 | 0.57 |
Body Mass Index (kg/m2) | 20.35 ± 3.66 | 20.62 ± 2.82 | 0.32 |
Nulliparous | 186 (92.1) | 383 (92.7) | 0.74 |
Gestational age (weeks) | 38.68 ± 1.34 | 38.39 ± 1.59 | 0.03 |
Birthweight (g) | 3300.6 ± 441.3 | 3256.0 ± 466.7 | 0.27 |
Birthweight z-score | 0.30 ± 0.99 | 0.29 ± 0.97 | 0.96 |
Low Birthweight (<2500Â g) | 7 (3.6) | 15 (3.7) | 1.00 |
Macrosomia (>4000Â g) | 12 (6.2) | 16 (4.0) | 0.23 |
Boys | 105 (52) | 205 (49.6) | 0.61 |
Preterm birth | 8 (4.3) | 23 (6.0) | 0.38 |
Small for gestational age (SGA) | 15 (8.2) | 29 (7.6) | 0.80 |
Large for gestational age (LGA) | 11 (6.0) | 23 (6.1) | 0.33 |