Table 1. Baseline characteristics of women giving birth to neonates stratified by respiratory distress syndrome (RDS) (N = 650).

Characteristic	RDS		p-value
	Yes (n = 16)	No (n = 634)
Age	34.6 ± 5.2	33.0 ± 4.8	0.174
Gravidity	5.8 ± 1.9	4.3 ± 2.4	0.017
Parity	3.6 ± 1.8	2.6 ± 1.9	0.042
Gestational age at delivery	37.6 ± 0.4	37.8 ± 0.5	0.034

Data are given as mean ± standard deviation.