Fig 3 Hazard ratios for hypertension by history of most severe hypertensive disorder of pregnancy and attained maternal age, among women with at least one live birth or stillbirth in Denmark, 1978-2012. Hazard ratios compare rates of hypertension among women with severe pre-eclampsia (orange), moderate pre-eclampsia (green), and gestational hypertension (black) as their most severe hypertensive disorder of pregnancy (cumulative history over all pregnancies) with rates of hypertension in women whose pregnancies were all normotensive. Follow-up began in 1995 or three months postpartum, whichever came later. Hazard ratios are adjusted for maternal age, maternal birth year, parity, and time since most recent pregnancy