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Table 1 Patients’ characteristics and neonatal outcome after fresh cleavage-stage embryo transfer

From: The effects of embryo culture media on the birthweight of singletons via fresh or frozen-thawed embryo transfer: a large-scale retrospective study

  Vitrolife
(n = 419)
SAGE
(n = 1336)
p
Maternal age (years) 30.84 ± 4.05 31.47 ± 4.17 0.007
Maternal weight (Kg) 52.63 ± 6.73 52.10 ± 6.79 0.22
Body Mass Index (kg/m2) 20.77 ± 2.79 20.73 ± 3.18 0.81
Nulliparous 388 (92.6) 1244 (93.1) 0.74
Gestational age (weeks) 38.47 ± 1.43 38.32 ± 1.50 0.07
Birthweight (g) 3196.0 ± 468.9 3168.4 ± 462.0 0.29
Birthweight z-score 0.11 ± 1.02 0.11 ± 0.99 0.10
Low Birthweight (<2500 g) 21 (5.0) 68 (5.1) 1.00
Macrosomia (>4000 g) 23 (5.5) 49 (3.7) 0.12
Boys 236 (56.3) 700 (52.3) 0.16
Preterm birth 27 (6.4) 90 (6.7) 0.91
Small for gestational age (SGA) 54 (12.9) 153 (11.4) 0.44
Large for gestational age (LGA) 21 (5.0) 63 (4.7) 0.80
  1. Data are presented as number (%) or mean ± SD