Importance: In 2015, there were nearly 140 million orphaned children globally, particularly in low- and middle-income regions, and millions more for whom the street is central to their everyday lives. A total of 16.6 million children were orphaned because of deaths associated with HIV/AIDS, of whom 90% live in sub-Saharan Africa. Although most orphaned and separated children and adolescents in this region are cared for by extended family, the large number of children requiring care has produced a proliferation of institutional care. Few studies have investigated the association between care environment and physical health among orphaned and separated youths in sub-Saharan Africa. Objective: To examine the association of care environment with incident HIV and death among orphaned and separated children and adolescents who were living in charitable children’s institutions, family-based settings, and street settings in western Kenya over almost 10 years. Design, Setting, and Participants: The Orphaned and Separated Children’s Assessments Related to Their Health and Well-Being (OSCAR) project was an observational prospective cohort study conducted in Uasin Gishu County, Kenya. The cohort comprised 2551 orphaned, separated, and street-connected children from communities within 8 administrative locations, which included 300 randomly selected households (family-based settings) caring for children who were orphaned from all causes, 19 charitable children’s institutions (institutional settings), and a convenience sample of 100 children who were practicing self-care on the streets (street settings). Participants were enrolled from May 31, 2010, to April 24, 2013, and were followed up until November 30, 2019. Exposures: Care environment (family-based, institutional, or street setting). Main Outcomes and Measures: Survival regression models were used to investigate the association between care environment and incident HIV, death, and time to incident HIV or death. Results: Among 2551 participants, 1230 youths were living in family-based settings, 1230 were living in institutional settings, and 91 were living in street settings. Overall, 1321 participants (51.8%) were male, with a mean (SD) age at baseline of 10.4 (4.8) years. Most participants who were living in institutional (1047 of 1230 youths [85.1%]) or street (71 of 91 youths [78.0%]) settings were double orphaned (ie, both parents had died). A total of 59 participants acquired HIV infection or died during the study period. After adjusting for sex, age, and baseline HIV status, living in a charitable children’s institution was not associated with death (adjusted hazard ratio [AHR], 0.26; 95% CI, 0.07-1.02) or incident HIV (AHR, 1.49; 95% CI, 0.46-4.83). Compared with living in a family-based setting, living in a street setting was associated with death (AHR, 5.46; 95% CI, 2.30-12.94), incident HIV (AHR, 17.31; 95% CI, 5.85-51.25), and time to incident HIV or death (AHR, 7.82; 95% CI, 3.48-17.55). Conclusions and Relevance: In this study, after adjusting for potential confounders, no association was found between care environment and HIV incidence or death among youths living in institutional vs family-based settings. However, living in a street setting vs a family-based setting was associated with both HIV incidence and death. This study’s findings suggest that strengthening of child protection systems and greater investment in evidence-based family support systems that improve child and adolescent health and prevent youth migration to the street are needed for safe and beneficial deinstitutionalization to be implemented at scale.
The Moi University College of Health Sciences and the Moi Teaching and Referral Hospital Institutional Research and Ethics Committee, the Indiana University Institutional Review Board, and the University of Toronto Research Ethics Board approved this study. Written informed consent for participation was provided by the head of household, the director of the charitable children’s institution, or, in the case of street-connected youths, by the district (now county) children’s officer. Individual written informed assent was provided by each child 7 years or older. Fingerprints were used for children and guardians who were unable to sign or write their names. This study followed the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) reporting guideline for cohort studies. The Orphaned and Separated Children’s Assessments Related to Their Health and Well-Being (OSCAR) project was a 2-phase longitudinal cohort study. In-depth details about the OSCAR cohort have been previously reported.29 Phase 1 was conducted from 2010 to 2015 and phase 2 from 2016 to 2019. The study was conducted in Uasin Gishu County, one of Kenya’s 47 counties, in the western highlands. Its capital, Eldoret, is home to the Moi University College of Health Sciences, the Moi Teaching and Referral Hospital, and the Academic Model Providing Access to Healthcare (AMPATH) program headquarters.30 The study enrolled participants 18 years and younger between May 31, 2010, and April 24, 2013, with follow-up until November 30, 2019. The OSCAR cohort comprised participants from communities within 8 administrative locations in Uasin Gishu County, which included 300 randomly selected households (family-based settings) caring for children who were orphaned from all causes, 19 of 21 charitable children’s institutions (institutional settings) that were operating in the county at the time of study initiation, and a convenience sample of 100 children who were practicing self-care on the streets (street settings).29 Orphaned youths were defined as those with a biological mother, father, or both who had died. Separated youths were defined as those with a biological mother or father who was potentially alive but functionally not part of the child’s life as reported by the head of household. Street-connected youths were defined as those who spent most of their time (>75%) on the street during the night and/or day for at least the past 3 months. The primary exposure of interest was care environment (institutional, family-based, or street), which was determined by a participant’s living circumstances at enrollment.21 Sociodemographic characteristics were ascertained through a clinical encounter and included age, sex, orphaned or separated status (maternal, paternal, or both), HIV status (positive, negative, or unknown), and time living in current care environment at baseline (<6 months, 6 months to 5 years, or all of life). Primary outcomes were incident HIV and death. Counseling and testing for HIV was offered to all participants 18 months and older using rapid fingerstick assays administered by nationally certified HIV counselors. Children younger than 18 months were referred to the local HIV clinic for DNA testing to ascertain HIV status. All-cause death was ascertained at regular intervals by community health workers who visited participating households and documented deaths using standardized death reporting tools. Deaths among children in institutional settings were ascertained through annual assessments, which documented the outcomes of participants who were no longer living at the institutions. Deaths among street-connected youths were ascertained by the project social worker (who maintained extensive networks within the street youth community) and by physical tracing of children. Data collection was conducted in situ at the participating charitable children’s institutions or at the OSCAR project clinic for participants living in family-based and street settings. Participants completed a standardized clinical evaluation annually (or semiannually for street-connected youths), and children 10 years and older completed an additional psychosocial evaluation annually.31 The clinical encounter was an enhanced well-child care visit that included a complete survey of physical history and a review of symptoms. Household-level data were obtained through annual site assessments administered by the project manager (for charitable children’s institutions) or community health workers (for participating households).32 Site assessments were not conducted for street-connected youths. Community health workers were study staff dedicated to following up participants from households in the community to ascertain deaths and other issues on a quarterly basis throughout the lives of the participants. We used our relationships and networks with the charitable children’s institutions to ascertain outcomes of children within their environments who were no longer living in the institutions because they were older than 18 years. We conducted dedicated team-based outreach to other cities in Kenya to which street-connected children were known to have migrated, which enabled us to ascertain outcomes directly from participants. We calculated effect estimates that were adjusted for the potential confounders of age and sex. We used competing risk regression analysis for HIV incidence because death is a competing risk for this outcome,33 and we used Cox survival models to assess death and time to incident HIV or death. The covariate for age was categorized as younger than 12 years vs 12 years and older to account for the onset of puberty and the increased probability of sexual activity after puberty. Robust SEs were calculated to account for clustering by care environment. In a sensitivity analysis, we assessed the effect of censor year to examine bias that may have occurred from differential follow-up times. Before study initiation, we conducted power and sample size calculations to estimate our power to detect 5%, 10%, and 15% differences in the probability of death. Our calculations assumed (1) a sample of 1110 children living in institutional settings and 305 children living in family-based settings, (2) a 3:1 ratio of children in institutional settings to children in family-based settings, (3) an approximately equal baseline risk for the outcome of interest among all children in the study, (4) a mean cluster size of 1.5 for families and 60 for institutions, (5) an intraclass correlation governing cluster effects of 0.20, (6) a loss to follow-up rate of 10%, and (7) a type 1 error rate of 2-sided α = .05. The calculations indicated that we had 86% to 99% power to detect the prespecified differences. Because the actual enrollment numbers exceeded expectations, the power was expected to be higher using the same assumptions. For all study participants, demographic characteristics at enrollment were both summarized and stratified by care environment. For participants in family-based and institutional settings, care environment characteristics at the site assessment closest to enrollment were summarized at the participant level. We reported mean values with SDs for continuous variables and frequencies with percentages for categorical variables, both overall and by care environment. Youths who were not orphaned or separated were excluded from all analyses. We conducted a survival analysis to assess the association of care environment with HIV incidence, death associated with any cause, and time to incident HIV or death. For each outcome, we assessed overall survival by care environment using Kaplan-Meier estimates of cumulative incidence and the P value from a log-rank test. Results from models were reported as hazard ratios (HRs) with 2-sided 95% CIs, and P < .05 was considered statistically significant. Participants with HIV-positive status at study enrollment were omitted from the analyses of HIV incidence and time to incident HIV or death. As a secondary analysis, we examined the association of sex and added an interaction term between care environment and sex to the same analyses that were conducted for direct comparisons by care environment. All analyses were performed using R software, version 4.0.1 (R Foundation for Statistical Computing).34