Racial Disparities in Low Birthweight Risk: an Examination of Stress Predictors

This paper describes racial disparities in low birthweight (LBW) risk between Black women and White women and examines the relationship between race and stressors such as socioeconomic factors, access to health care, and social and health characteristics.

We analyzed data from the National Survey of Family Growth dataset collected in the USA between 2006 and 2010 (N = 1516). Multivariate logistic regression models were performed.

Prevalence of LBW was 5.6 % for pregnancies among White women and 12.2 % among Black women. Black women who had a LBW baby had a lower socioeconomic status (e.g., received assistance to pay for delivery of the baby and public assistance in the prior year). Black women who had a LBW baby were more likely to have reported having good health compared with White women (67.8 vs. 45.1 %, p < .10). Pregnancies of Black women were 2.6 times more likely (odds ratio (OR) = 2.33; 95 % confidence interval (CI), 1.12-6.04) to result in a LBW baby than pregnancies among White women. Pregnancies of women in the income group of 300 % or higher than the poverty level were less likely to be associated with a LBW baby than those among women in the 150-299 % income group (p < .10). Obese women were less likely to have LBW children than those who were underweight or normal weight (p < .10). Among pregnancies of White mothers (n = 943), the only significant variable was self-reported health status. White women who reported having poorer health were 3.7 times more likely to have LBW than those who reported having better health (p < .10). Among Black mothers, the only predictor that was negatively associated with an increased likelihood of having a LBW baby was the SES stressor related to receiving public assistance.

Racial differences between Black and White women were observed in LBW risk based on socioeconomic factors. We analyzed a large number of stressors, but racial differences remained even after taking these stressors into account. Future policies and research should continually address these differences to decrease LBW risk within and across racial groups.