ArticleMicrobiology spectrum2023
Point of Care CD4 Testing in National Household Surveys - Results and Quality Indicators from Eleven Population-Based HIV Impact Assessment (PHIA) Surveys.
Article in Microbiology spectrum, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 2 citations in OpenAlex.
- Performance comparison of CD4 T-cell count instruments based on data from the national proficiency testing program in China, 2016-2023.BMC infectious diseases · 2026Article
- Decreasing Adult Prevalence of Advanced HIV Disease From 2 Population-Based HIV Impact Assessments in Eswatini, Lesotho, Malawi, Tanzania, Uganda, Zambia, and Zimbabwe, 2015-2023.Open forum infectious diseases · 2026Article
- Prevalence of advanced HIV disease in sub-Saharan Africa: a multi-country analysis of nationally representative household surveys.The Lancet. Global health · 2025Article
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Authors and funding
19 authors at 2 institutions in 1 country.
Funding
Abstract
Population-based HIV Impact Assessments (PHIAs) are national household (HH) surveys that provide HIV diagnosis and CD4 testing with an immediate return of results. Accurate CD4 results improve HIV-positive participants' clinical care and inform the effectiveness of HIV programs. Here, we present CD4 results from the PHIA surveys that were conducted in 11 countries in sub-Saharan Africa between 2015 and 2018. All of the HIV-positive participants and 2 to 5% of the HIV-negative participants were offered Pima CD4 (Abbott, IL, USA) point-of-care (POC) tests. The quality of the CD4 test was ensured by conducting instrument verification, comprehensive training, quality control, a review of testing errors and an analysis of unweighted CD4 data by HIV status, age, gender, and antiretroviral (ARV) treatment status. Overall, CD4 testing was completed for 23,085 (99.5%) of the 23,209 HIV-positive and 7,329 (2.7%) of the 270,741 negative participants in 11 surveys. The instrument error rate was 11.3% (range, 4.4% to 15.7%). The median CD4 values among HIV-positive and HIV-negative participants (aged 15+) were 468 cells/mm
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