Conceptual model with bivariate associations between maternal factors and neonatal fat mass index (kg/m3) in urban, black South Africans Values are regression coefficients with standard errors [β(SE)] from linear regression analyses; significant results presented in bold (P<0.05) Abbreviations: FMI, neonatal fat mass index; GWG, gestational weight gain; HIV-, HIV negative; HIV+a, HIV positive (antenatal ART); HIV+b, HIV positive (pre-pregnancy ART); NW, normal weight; OW, overweight; Ob, obese; Vs, versus (i.e. compared to the following reference category)