This dataset is associated with an article entitled "Association of Angiotensin Receptor Autoantibodies with Cardiovascular Abnormalities in Preeclampsia." The text describes a study of a prospective cohort of women with preeclampsia with severe features of preeclampsia and controls. Twenty-one women with prior preeclampsia and twenty normotensive controls underwent evaluation at recruitment and at 4-year follow-up. A subset of 12 women with preeclampsia and 12 controls underwent echocardiography and had their serum levels of an angiotensin II type I receptor autoantibody measured by a quantitative antigen capture immunoassay at the same time. A subset of 12 women with preeclampsia and 12 controls underwent echocardiography 4 years postpartum and were similarly evaluated. The associations between the autoantibody levels and demographics, echocardiographic indices of diastolic dysfunction and with incident hypertension were determined