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Table 4 Comparison of neonatal outcomes

From: Cross sectional study in China: fetal gender has adverse perinatal outcomes in mainland China

  Male infants (n = 60028) Female infants (n = 49694) Ratio P
n (%) n (%)
Gestational age (GA)     
Mean GA (weeks) 39 (38-40) 39 (38-40) - <0.001
Preterm 4381 (7.3%) 3233 (6.5%) 1.36 <0.001
Term 51576 (85.9%) 43063 (86.7%) 1.20 <0.001
Postterm 4071 (6.8%) 3398 (6.8%) 1.20 0.71
Neonatal outcome     
Birth weight (BW)     
Mean BW (g) 3350 (3040-3640) 3250 (2980-3520) - <0.001
<2500 g 3548 (6.0%) 3333 (6.8%) 1.06 <0.001
2500-4000 51628 (87.9%) 43852 (89.0%) 1.18 <0.001
>4000 g 4852 (8.3%) 2509 (5.1%) 1.93 <0.001
Apgar < 7 at 5 min 294 (0.5%) 193 (0.4%) 1.5 <0.05
NICU 624 (1.0%) 455 (0.9%) 1.37 <0.05
Neonatal death 241 (0.40%) 124 (0.25%) 1.94 <0.01
  1. NICU, neonatal intensive care unit Quantitative variables are expressed as median (25th percentile–75th percentile).
  2. 1744 missing cases for neonatal weight. 5346 missing cases for Apgar scores at 5 minutes, 35 missing cases for neonatal death.