Table 3.

Odds of severe RDS development according to various factors.

Variable	Severe RDS (yes vs. no)
	Univariate model		Model 1
	Odds ratio (95%CI)	p value	Adjusted odds ratio (95%CI)	p value
GA	0.65 (0.66–0.64)	<0.001	0.68 (0.65–0.7)	<0.001
BBW (per 100 grams)	0.73 (0.75–0.72)	<0.001	0.94 (0.91–0.97)	0.0003
Gender (male vs. female)	1.29 (1.38–1.20)	<0.001	1.24 (1.14–1.35)	<0.001
SGA (yes vs. no)	0.33 (0.36–0.30)	<0.001	0.8 (0.69–0.93)	0.005
Antenatal steroid using (≥2 vs.<2)	0.70 (0.75–0.65)	<0.001	0.57 (0.53–0.62)	<0.001
Preeclampsia (yes vs. no)	0.52 (0.57–0.47)	<0.001	1.16 (1.02–1.31)	0.026

Abbreviations: RDS, respiratory distress syndrome. GA, gestational age. BBW, birth body weight. SGA, small for gestational age.