Figure 2

Hemoglobin concentration during the first year of life in Zimbabwean babies by HIV status. Values are means with 95% confidence intervals, adjusted for birthweight. The asterisk indicates a statistically significant difference in mean hemoglobin among the groups at a certain time point (6 weeks, F = 3.54, P = 0.030; 9 months, F = 4.37, P = 0.005; 12 months, F = 11.34, P < 0.001). Abbreviations: Nn, mother HIV negative, baby HIV negative; Pn, mother HIV positive, baby HIV negative at 6 months; Pp, mother HIV positive, baby HIV positive at 6 weeks.