Impact of Mobility on HIV Prevalence Estimates
Author Information
Author(s): Milly Marston, Katherine Slaymaker, Eleanor Harris
Primary Institution: London School of Hygiene and Tropical Medicine
Hypothesis
Does the mobility of absentees in national population-based surveys bias estimates of HIV prevalence?
Conclusion
The mobility of absentees does not substantially bias estimates of HIV prevalence from population-based surveys.
Supporting Evidence
- Non-response groups were corrected to have higher risks of HIV than those who participated in the tests.
- Adjusted prevalence for absentees was significantly higher in Lesotho compared to those present.
- Overall effects of non-response on national estimates of HIV prevalence are minimal.
Takeaway
This study looked at how people being away from home affects the accuracy of HIV prevalence estimates. It found that being away doesn't change the numbers much.
Methodology
Data from nine demographic and health surveys and AIDS indicator surveys were analyzed using multiple imputation methods with logistic regression models.
Potential Biases
Non-response bias may occur if non-responders differ significantly from those who participate in HIV testing.
Limitations
The study was limited by the availability of data in non-response groups and the sample size may be inadequate in low-prevalence areas.
Participant Demographics
The study included men and women aged 15-59 from various countries.
Statistical Information
P-Value
p<0.05
Confidence Interval
1.01 to 3.32
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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