Association between blood pressure and birth weight among rural South African children : Ellisras longitudinal study25 Sep 2019
The aim of this cross-sectional study was to investigate the association between birth weight, underweight, and blood pressure (BP) among Ellisras rural children aged between 5 and 15 years. Data were collected from 528 respondents who participated in the Ellisras Longitudinal Study (ELS) and had their birth weight recorded on their health clinic card. Standard procedure was used to measure the anthropometric measurements and BP. Linear regression was used to assess BP, underweight variables, and birth weight. Logistic regression was used to assess the association of hypertensionrisks, lowbirthweight, andunderweight. TheassociationbetweenbirthweightandBP was not statistically signiﬁcant. There was a signiﬁcant (p < 0.05) association between mean BP and the sum of four skinfolds (β = 0.26, 95% CI 0.15–0.23) even after adjusting for age (β = 0.18, 95% CI 0.01–0.22). Hypertensionwassigniﬁcantlyassociated withweightforage z-scores (OR=5.13, 95% CI 1.89–13.92) even after adjusting for age and sex (OR = 5.26, 95% CI 1.93–14.34). BP was signiﬁcantly associated with the sum of four skinfolds, but not birth weight. Hypertension was signiﬁcantly associated with underweight. Longitudinal studies should conﬁrm whether the changes in body weight we found can inﬂuence the risk of cardiovascular diseases.