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How well do antenatal clinic (ANC) attendees represent the general population? A comparison of HIV prevalence from ANC sentinel surveillance sites with a population-based survey of women aged 15-49 in Cambodia.
Int J Epidemiol. 2002 Apr; 31(2):449-55.IJ

Abstract

BACKGROUND

The purpose of this study was to evaluate whether HIV-1 prevalence among antenatal clinic (ANC) attendees in Cambodia provided a reasonable estimate of HIV-1 prevalence among all women 15-49 years. METHODS Antenatal clinic attendees in five HIV sentinel surveillance sites (five provinces) were selected by consecutive sampling (n = 1695). The population survey of females by household was carried out in the same five areas. Household females aged 15-49 years were selected using a three-stage cluster sampling design (n = 3066). Serum-based HIV ELISA testing was done for both ANC attendees and household females. The HIV prevalence for ANC attendees and household females were compared by age group and urban versus rural location.

RESULTS

The overall prevalence of HIV-1 infection among ANC attendees (1.62%, 95% CI : 1.26-1.98) was similar to the overall prevalence obtained from the general population of household females (1.24%, 95% CI : 0.92-1.55) in the same catchment areas in Cambodia. In the rural areas, the overall HIV prevalence among ANC attendees (2.18%, 95% CI : 1.59-2.77) was significantly higher than among the household females (0.86%, 95% CI : 0.49-1.23) after adjustment for age distribution and education level. In the 15-24 age group in rural areas, the HIV prevalence of ANC women was 2.71% (95% CI : 0.96-4.46) compared with 0.77% (95% CI : 0.02-1.53) in household females.

CONCLUSIONS

Although ANC data can be used to estimate trends over time, it should be realized that ANC data may overestimate the actual prevalence in the younger age group in rural areas in Cambodia.

Authors+Show Affiliations

National Center for HIV/AIDS, Dermatology and STD, Phnom Penh, Cambodia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

11980815

Citation

Saphonn, Vonthanak, et al. "How Well Do Antenatal Clinic (ANC) Attendees Represent the General Population? a Comparison of HIV Prevalence From ANC Sentinel Surveillance Sites With a Population-based Survey of Women Aged 15-49 in Cambodia." International Journal of Epidemiology, vol. 31, no. 2, 2002, pp. 449-55.
Saphonn V, Hor LB, Ly SP, et al. How well do antenatal clinic (ANC) attendees represent the general population? A comparison of HIV prevalence from ANC sentinel surveillance sites with a population-based survey of women aged 15-49 in Cambodia. Int J Epidemiol. 2002;31(2):449-55.
Saphonn, V., Hor, L. B., Ly, S. P., Chhuon, S., Saidel, T., & Detels, R. (2002). How well do antenatal clinic (ANC) attendees represent the general population? A comparison of HIV prevalence from ANC sentinel surveillance sites with a population-based survey of women aged 15-49 in Cambodia. International Journal of Epidemiology, 31(2), 449-55.
Saphonn V, et al. How Well Do Antenatal Clinic (ANC) Attendees Represent the General Population? a Comparison of HIV Prevalence From ANC Sentinel Surveillance Sites With a Population-based Survey of Women Aged 15-49 in Cambodia. Int J Epidemiol. 2002;31(2):449-55. PubMed PMID: 11980815.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - How well do antenatal clinic (ANC) attendees represent the general population? A comparison of HIV prevalence from ANC sentinel surveillance sites with a population-based survey of women aged 15-49 in Cambodia. AU - Saphonn,Vonthanak, AU - Hor,Leng Bun, AU - Ly,Sun Penh, AU - Chhuon,Samrith, AU - Saidel,Tobi, AU - Detels,Roger, PY - 2002/5/1/pubmed PY - 2002/8/31/medline PY - 2002/5/1/entrez SP - 449 EP - 55 JF - International journal of epidemiology JO - Int J Epidemiol VL - 31 IS - 2 N2 - BACKGROUND: The purpose of this study was to evaluate whether HIV-1 prevalence among antenatal clinic (ANC) attendees in Cambodia provided a reasonable estimate of HIV-1 prevalence among all women 15-49 years. METHODS Antenatal clinic attendees in five HIV sentinel surveillance sites (five provinces) were selected by consecutive sampling (n = 1695). The population survey of females by household was carried out in the same five areas. Household females aged 15-49 years were selected using a three-stage cluster sampling design (n = 3066). Serum-based HIV ELISA testing was done for both ANC attendees and household females. The HIV prevalence for ANC attendees and household females were compared by age group and urban versus rural location. RESULTS: The overall prevalence of HIV-1 infection among ANC attendees (1.62%, 95% CI : 1.26-1.98) was similar to the overall prevalence obtained from the general population of household females (1.24%, 95% CI : 0.92-1.55) in the same catchment areas in Cambodia. In the rural areas, the overall HIV prevalence among ANC attendees (2.18%, 95% CI : 1.59-2.77) was significantly higher than among the household females (0.86%, 95% CI : 0.49-1.23) after adjustment for age distribution and education level. In the 15-24 age group in rural areas, the HIV prevalence of ANC women was 2.71% (95% CI : 0.96-4.46) compared with 0.77% (95% CI : 0.02-1.53) in household females. CONCLUSIONS: Although ANC data can be used to estimate trends over time, it should be realized that ANC data may overestimate the actual prevalence in the younger age group in rural areas in Cambodia. SN - 0300-5771 UR - https://www.unboundmedicine.com/medline/citation/11980815/How_well_do_antenatal_clinic__ANC__attendees_represent_the_general_population_A_comparison_of_HIV_prevalence_from_ANC_sentinel_surveillance_sites_with_a_population_based_survey_of_women_aged_15_49_in_Cambodia_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=11980815.ui DB - PRIME DP - Unbound Medicine ER -