Table 2.

Multivariate logistic regression analysis of preeclampsia in the second pregnancy

	Adjusted OR *	95% CI
Old age (≥35 years)	1.67	1.31–2.11
Preeclampsia in the first pregnancy	16.90	14.93–19.12
Multiple pregnancies in the first pregnancy	0.56	0.27–1.15
Multiple pregnancies in the second pregnancy	3.98	2.84–5.56
Prior cesarean section	1.26	1.13–1.41
Interval between the 2 pregnancies
1 year	1
2 years	0.80	0.68–0.95
3 years	0.97	0.81–1.15
4 years	1.48	1.24–1.77

^*The model is adjusted for variables in the table.

OR, odds ratio; CI, confidence interval.