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Comparison of adult HIV prevalence from national population-based surveys and antenatal clinic surveillance in countries with generalised epidemics: implications for calibrating surveillance data.
Sex Transm Infect. 2008 Aug; 84 Suppl 1:i17-i23.ST

Abstract

BACKGROUND

Estimates of the impact of HIV in countries with generalised epidemics are generally based on antenatal clinic surveillance data collected over time. In an attempt to obtain geographically more representative estimates of HIV prevalence, many countries are now also conducting national population-based surveys in which HIV testing is included. We compare adult HIV prevalence estimates from antenatal clinic surveillance to those from national population-based surveys to assess the implications for calibrating surveillance data.

METHODS

HIV prevalence estimates derived from fitting prevalence curves to antenatal clinic surveillance data are statistically compared to prevalence from national population-based surveys using data from 26 countries with generalised epidemics for the year in which the survey was conducted. Appropriate transformations are applied to inform the correction factors needed to adjust prevalence in countries where population-based surveys have not been conducted.

RESULTS

HIV prevalence derived from antenatal clinic surveillance data generally overestimate population-based survey prevalence by about 20% (95% confidence interval: 10% to 30%) in both urban and rural areas.

CONCLUSIONS

In countries where national population-based HIV surveys have been conducted, survey estimates of HIV prevalence (adjusted for potential survey biases as appropriate) can be used directly to calibrate antenatal clinic surveillance data. In countries where national HIV surveys have not been conducted, HIV prevalence derived from antenatal clinic surveillance data should be multiplied by about 0.8 to adjust for overestimation.

Authors+Show Affiliations

Epidemiology and Analysis Division, Evidence, Monitoring and Policy Department, Joint United Nations Programme on HIV/AIDS (UNAIDS), Geneva, Switzerland. Gouwse@unaids.orgNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Multicenter Study

Language

eng

PubMed ID

18647861

Citation

Gouws, E, et al. "Comparison of Adult HIV Prevalence From National Population-based Surveys and Antenatal Clinic Surveillance in Countries With Generalised Epidemics: Implications for Calibrating Surveillance Data." Sexually Transmitted Infections, vol. 84 Suppl 1, 2008, pp. i17-i23.
Gouws E, Mishra V, Fowler TB. Comparison of adult HIV prevalence from national population-based surveys and antenatal clinic surveillance in countries with generalised epidemics: implications for calibrating surveillance data. Sex Transm Infect. 2008;84 Suppl 1:i17-i23.
Gouws, E., Mishra, V., & Fowler, T. B. (2008). Comparison of adult HIV prevalence from national population-based surveys and antenatal clinic surveillance in countries with generalised epidemics: implications for calibrating surveillance data. Sexually Transmitted Infections, 84 Suppl 1, i17-i23. https://doi.org/10.1136/sti.2008.030452
Gouws E, Mishra V, Fowler TB. Comparison of Adult HIV Prevalence From National Population-based Surveys and Antenatal Clinic Surveillance in Countries With Generalised Epidemics: Implications for Calibrating Surveillance Data. Sex Transm Infect. 2008;84 Suppl 1:i17-i23. PubMed PMID: 18647861.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of adult HIV prevalence from national population-based surveys and antenatal clinic surveillance in countries with generalised epidemics: implications for calibrating surveillance data. AU - Gouws,E, AU - Mishra,V, AU - Fowler,T B, PY - 2008/7/25/pubmed PY - 2008/9/13/medline PY - 2008/7/25/entrez SP - i17 EP - i23 JF - Sexually transmitted infections JO - Sex Transm Infect VL - 84 Suppl 1 N2 - BACKGROUND: Estimates of the impact of HIV in countries with generalised epidemics are generally based on antenatal clinic surveillance data collected over time. In an attempt to obtain geographically more representative estimates of HIV prevalence, many countries are now also conducting national population-based surveys in which HIV testing is included. We compare adult HIV prevalence estimates from antenatal clinic surveillance to those from national population-based surveys to assess the implications for calibrating surveillance data. METHODS: HIV prevalence estimates derived from fitting prevalence curves to antenatal clinic surveillance data are statistically compared to prevalence from national population-based surveys using data from 26 countries with generalised epidemics for the year in which the survey was conducted. Appropriate transformations are applied to inform the correction factors needed to adjust prevalence in countries where population-based surveys have not been conducted. RESULTS: HIV prevalence derived from antenatal clinic surveillance data generally overestimate population-based survey prevalence by about 20% (95% confidence interval: 10% to 30%) in both urban and rural areas. CONCLUSIONS: In countries where national population-based HIV surveys have been conducted, survey estimates of HIV prevalence (adjusted for potential survey biases as appropriate) can be used directly to calibrate antenatal clinic surveillance data. In countries where national HIV surveys have not been conducted, HIV prevalence derived from antenatal clinic surveillance data should be multiplied by about 0.8 to adjust for overestimation. SN - 1472-3263 UR - https://www.unboundmedicine.com/medline/citation/18647861/Comparison_of_adult_HIV_prevalence_from_national_population_based_surveys_and_antenatal_clinic_surveillance_in_countries_with_generalised_epidemics:_implications_for_calibrating_surveillance_data_ L2 - https://sti.bmj.com/lookup/pmidlookup?view=long&pmid=18647861 DB - PRIME DP - Unbound Medicine ER -