Socio-demographic and clinical characteristics of HIV-infected women with CD4+ cell count ≥250 cells/mm³ at enrollment and who initiated PMTCT prophylactic regimens.

<p>PMTCT, prevention of mother-to-child transmission of HIV; sd-NVP, single-dose nevirapine; sc-ARVp, short-course antiretroviral prophylaxis; tARVp, triple-drug antiretroviral prophylaxis; IQR, interquartile range; CD4+, CD4+ cell count.</p

Kaplan-Meier estimate of probability to not reach CD4+ cell count <350 cells/mm³ by PMTCT regimens among HIV-infected pregnant women.

<p>Part (A) enrollment CD4+ cell count between 400–499 cells/mm³ Part (B) enrollment CD4+ cell count ≥500 cells/mm³.</p

Cohort profile.

<p>Cohort profile.</p

Kaplan-Meier estimate of probability to not reach CD4+ cell count <200 cells/mm³ by PMTCT regimens among HIV-infected pregnant women with enrollment CD4+ cell count ≥250 cells/mm³.

<p>Kaplan-Meier estimate of probability to not reach CD4+ cell count <200 cells/mm³ by PMTCT regimens among HIV-infected pregnant women with enrollment CD4+ cell count ≥250 cells/mm³.</p

PMTCT regimens and clinical characteristics associated with progression to CD4+ cell count <200 cells/mm³ or CD4+ cell count <350 cells/mm³.

<p>PMTCT, prevention of mother-to-child transmission of HIV; CD4+, CD4+ cell count; HR, hazard ratio; 95% CI, 95% confidence interval; aHR, adjusted hazard ratio; sd-NVP, single-dose nevirapine; sc-ARVp, short-course antiretroviral prophylaxis; tARVp, triple-drug antiretroviral prophylaxis.</p

Instantaneous hazard of pregnancy during the pre-ART period by duration of follow-up, with 95% CIs.

<p>Instantaneous hazard of pregnancy during the pre-ART period by duration of follow-up, with 95% CIs.</p

Cox's proportional hazards models examining the association between ART and incident pregnancy, presented as adjusted HRs with 95% CIs.

<p>Each model is adjusted for all covariates listed.</p

Plot of the postestimation pregnancy-free survival function from a proportional hazards model for participants during the pre-ART and on-ART periods.

<p>Model adjusted for participant age, education, nonbarrier contraceptive use, marital/cohabiting status, parity, enrollment of partner into the program, and current CD4 count.</p

Instantaneous hazard of pregnancy during the on-ART period by duration of follow-up, with 95% CIs.

<p>Instantaneous hazard of pregnancy during the on-ART period by duration of follow-up, with 95% CIs.</p

Crude incidence rates of pregnancy per 100 person-years of observation, with 95% CIs, among women according to selected participant demographic, socioeconomic, clinical, and immunological characteristics.

a<p>Other contraception includes natural family planning, diaphragm use, and traditional methods of family planning.</p><p>IUD, intrauterine device.</p