TABLE 3.

Hypertensive disorders preceding preeclampsia in nulliparous and multiparous pregnancies

	Nulliparous						Multiparous
	N preeclampsia = 83 045						N preeclampsia = 42 258
	Total preeclampsia		Early onset preeclampsia		Severe preeclampsia		Total preeclampsia		Early onset preeclampsia		Severe preeclampsia
	N	%	N	%	N	%	N	%	N	%	N	%
None	66 071	79.5	12 077	73.0	27 378	79.4	29 765	70.4	4509	59.8	10 197	69.6
Preexisting hypertension	7361	8.9	2439	14.7	3210	9.3	7277	17.2	2081	27.6	2654	18.1
Persistent preexisting hypertension	5394	6.5	1868	11.3	2440	7.1	5791	13.7	1688	22.4	2196	15.0
Gestational hypertension	9613	11.6	2031	12.3	3891	3,0	5216	12.3	953	12.6	1810	12.3
Total	83 045	100.0	16 547	100.0	34 479	100.0	42 258	100.0	7543	100.0	14 661	100.0