Characteristics at study enrollment and ART initiation of HIV-infected children receiving antiretroviral therapy.

<p>Group A: children who entered the study already receiving ART; Group B: children who initiated ART after study enrollment.</p>a<p>Among respondents who were primary caregivers (n = 247).</p>b<p>Among children <10 years of age.</p>c<p>Defined by age according to the 2006 WHO guidelines.