The Relationship Between Live Births and CVD Among African American Women in Jackson Heart Study

Background Previous studies have reported mixed results on the relationship between live births and cardiovascular disease among African American females, with few controlling for an inclusive list of major cardiovascular disease (CVD) risk factors and/or including a large population of African American female participants. Methods To help clarify this issue we examined the relationship between live births and cardiovascular events, including major CVD risk factors in a well-studied, exclusively African American cohort. Data was from 3367 African American women, 21 and older, in the Jackson Heart Study. Myocardial Infraction (MI), Self-reported history of cardiac procedures, Coronary Heart Disease Status/History, Self-reported history of Carotid Angioplasty, Cardiovascular Disease history, and Heart Failure History were obtained from 2000 to 2004 interviews. Live births were self-reported. Chi-square test indicated a significant association between live births and the presence of CVD (p =.000). Logistic regression estimated the relationship between live births and cardiovascular events, adjusting for major cardiovascular risk factors. Results After adjusting for hypertension status, current smoking status, cholesterol status, diabetes status, family history of heart diseases (mother), family history of heart disease (father), age, frequency of alcohol use in the past 12 months, and the average number of drinks per week in the past 12 months, there was no longer a significant relationship between live births and the risk of CVD (AOR 1.012, 95% CI, 1.009-1.015, p=.895). Discussion The unadjusted significant relationship between live births and CVD events disappeared after adjusting for major CVD risk factors, which suggests that an association between live births and CVD is indirect and based on the distribution of CVD risk factors. Conclusion Therefore, we propose more research on the use of live births as a CVD indicator in African American/Black women to ensure that African American/Black women obtain optimum cardiovascular health and make informed reproductive decisions.