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Improving Sampling Efficiency for Determining Pediatric HIV Prevalence in National Surveys: Evidence From 8 Sub-Saharan African Countries

Journal of acquired immune deficiency syndromes (1999), 2021-08, Vol.87 (Suppl 1), p.S43-S51 [Peer Reviewed Journal]

Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved. ;ISSN: 1525-4135 ;EISSN: 1944-7884 ;DOI: 10.1097/QAI.0000000000002704 ;PMID: 34166312

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Title:
Improving Sampling Efficiency for Determining Pediatric HIV Prevalence in National Surveys: Evidence From 8 Sub-Saharan African Countries
Author: Reid, Giles ; Voetsch, Andrew C ; Stupp, Paul ; McCracken, Stephen ; Kalton, Graham ; Dlamini, Sindisiwe ; McOllogi Juma, James ; Kalua, Thoko ; Kirungi, Wilford ; Koto, Masebeo ; Mugurungi, Owen ; Mulenga, Lloyd ; Mutenda, Nicholus ; Marum, Lawrence ; Saito, Suzue
Subjects: Adult ; Africa South of the Sahara - epidemiology ; Child ; Children ; Children & youth ; Confidence intervals ; Data Collection ; Design ; Disease transmission ; Enumeration ; Epidemiological Monitoring ; Female ; Health Surveys ; HIV ; HIV Infections - epidemiology ; HIV-1 ; Households ; Human immunodeficiency virus ; Humans ; Infectious Disease Transmission, Vertical ; Pediatrics ; Polls & surveys ; Pregnancy ; Prevalence ; Sample size ; Sampling
Is Part Of: Journal of acquired immune deficiency syndromes (1999), 2021-08, Vol.87 (Suppl 1), p.S43-S51
Description: Measurement of mother-to-child HIV transmission through population-based surveys requires large sample sizes because of low HIV prevalence among children. We estimate potential improvements in sampling efficiency resulting from a targeted sample design. Eight countries in sub-Saharan Africa with completed Population-based HIV Impact Assessment (PHIA) surveys as of 2017. The PHIA surveys used a geographically stratified 2-stage sample design with households sampled from randomly selected census enumeration areas. Children (0-14 years of age) were eligible for HIV testing within a random subsample of households (usually 50%). Estimates of child HIV prevalence in each country were calculated using jackknife replicate weights. We compared sample sizes and precision achieved using this design with a 2-phase disproportionate sample design applied to strata defined by maternal HIV status and mortality. HIV prevalence among children ranged from 0.4% (95% confidence interval: 0.2 to 0.6) in Tanzania to 2.8% (95% confidence interval: 2.2 to 3.4) in Eswatini with achieved relative standard errors between 11% and 21%. The expected precision improved in the targeted design in all countries included in the analysis, with proportionate reductions in mean squared error ranging from 27% in Eswatini to 61% in Tanzania, assuming an equal sample size. Population-based surveys of adult HIV prevalence that also measure child HIV prevalence should consider targeted sampling of children to reduce required sample size, increase precision, and increase the number of positive children tested. The findings from the PHIA surveys can be used as baseline data for informing future sample designs.
Publisher: United States: Lippincott Williams & Wilkins Ovid Technologies
Language: English
Identifier: ISSN: 1525-4135
EISSN: 1944-7884
DOI: 10.1097/QAI.0000000000002704
PMID: 34166312
Source: MEDLINE
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Improving Sampling Efficiency for Determining Pediatric HIV Prevalence in National Surveys: Evidence From 8 Sub-Saharan African Countries

Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved. ;ISSN: 1525-4135 ;EISSN: 1944-7884 ;DOI: 10.1097/QAI.0000000000002704 ;PMID: 34166312

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