Fig. 2From: Association between maternal HIV infection and low birth weight and prematurity: a meta-analysis of cohort studiesForest plot of odds ratio for low birth weight. Pooled OR = 1.73, 95 % CI: 1.64, 1.82; Heterogeneity chi-squared = 148.65 (d.f. = 42), p = 0.000, I-squared (variation in ES attributable to heterogeneity) = 71.7 %; Test of ES = 1: z = 20.06, p = 0.000Back to article page