Table 2:

Cumulative risk of diagnosis in the first 24 months’ postpartum for specific

	Total	Number of events postpartum	%a	HDP	Non-HDP	%b among exposed	%b among unexposed
Heart failure	119368	202	0.2	14627	104741	0.6	0.2
Ischemic heart disease	119364	121	0.2	14625	104739	0.3	0.1
Cerebrovascular disease/stroke	119231	443	0.5	14604	104627	0.8	0.4
Arrhythmia/cardiac arrest	119344	151	0.2	14619	104725	0.2	0.2
Cardiomyopathy	119345	213	0.2	14620	104725	0.6	0.2
Severe cardiac disease (heart failure, stroke, or cardiomyopathy)	119124	741	0.8	14582	104542	1.6	0.7
New chronic hypertension (43+ days after delivery) b	110761	1662	2.1	9299	101462	9.7	1.5

Data source: Maine Health Data Organization’s All Payer Claims Data

HDP=hypertensive disorder of pregnancy

^aCumulative risk by 24 months. Censoring events were loss of health insurance coverage or start of the next pregnancy, whichever was earlier. Each model excluded records with any diagnosis before pregnancy of the cardiovascular conditions being examined postpartum, and records with gestational age (<20 weeks), non-Maine residence, multifetal gestation, those with implausible time to next pregnancy (<60 days), and those without health insurance during pregnancy through the first 2 months’ postpartum.

^bHypertension diagnoses in the first 42 days’ postpartum were not included as chronic hypertension outcomes, as these were included in the definition of hypertensive disorders of pregnancy.