Comparing HIV Prevalence Estimates from Different Sources
Author Information
Author(s): Gouws E, Mishra V, Fowler T B
Primary Institution: Joint United Nations Programme on HIV/AIDS (UNAIDS)
Hypothesis
How do adult HIV prevalence estimates from national population-based surveys compare to those from antenatal clinic surveillance in countries with generalized epidemics?
Conclusion
HIV prevalence estimates from antenatal clinic surveillance generally overestimate actual prevalence from national population-based surveys by about 20%.
Supporting Evidence
- HIV prevalence from antenatal clinic surveillance overestimates population-based survey prevalence by about 20%.
- National population-based surveys provide more geographically representative estimates than antenatal clinic data.
- Adjustments to antenatal clinic data are necessary to align with population-based survey estimates.
Takeaway
This study looked at how accurate different methods are for measuring HIV rates. It found that one method often says there are more people with HIV than there really are.
Methodology
The study compared HIV prevalence estimates from antenatal clinic data and national population-based surveys across 26 countries.
Potential Biases
Potential bias from non-response in population-based surveys and limited geographical coverage in antenatal clinic data.
Limitations
The quality of antenatal clinic surveillance varies by country, and some areas may not be well represented.
Participant Demographics
The study included adult men and women aged 15-49 from various countries with generalized HIV epidemics.
Statistical Information
Confidence Interval
10% to 30%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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