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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.