Table 3.

Risk ratio of early-onset preeclampsia and all preeclampsia to women with SLE versus women from the general population in Sweden between October 2001 and December 2012

	Early-onset preeclampsia <34 weeks				All preeclampsia
	Number		Risk ratio (95% confidence interval)		Number		Risk ratio (95% confidence interval)
Pregnancies	SLE	GP	Age-adjusted	Complete adjustment*	SLE	GP	Age-adjusted	Complete adjustment*
First	24	34	9.4 (5.6, 15.6)	9.3 (5.4, 16.3)	56	225	3.2 (2.4, 4.2)	3.2 (2.4, 4.2)
Subsequent	8	21	5.2 (2.2, 12.5)	4.7 (2.0, 11.2)	26	131	2.9 (1.9, 4.4)	2.6 (1.7, 4.2)
All	32	55	8.1 (5.1, 12.9)	7.8 (4.8, 12.9)	82	356	3.2 (2.5, 4.1)	3.1 (2.4, 4.0)

SLE: systemic lupus erythematosus

GP: general population

^*All multivariable adjusted models adjusted for maternal age, pregestational diabetes and hypertension, first-trimester smoking, and assuming all missing smokers are smokers (see Supplementary Table 1 for sensitivity analysis results)