Figure 1From: Effectiveness of first-line antiretroviral therapy in the IPEC cohort, Rio de Janeiro, BrazilBox plot of CD4 count distribution at baseline and 6, 12, and 24Â months after antiretroviral therapy initiation. Pair-wise comparisons of baseline measurement with 6-, 12-, and 24-month time points indicate statistically significant differences (Wilcoxon paired test).Back to article page