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Sampling studies to estimate the HIV prevalence rate in female commercial sex workers BJID
Pascom,Ana Roberta Pati; Szwarcwald,Célia Landmann; Barbosa Júnior,Aristides.
INTRODUCTION: We investigated sampling methods being used to estimate the HIV prevalence rate among female commercial sex workers. METHODS: The studies were classified according to the adequacy or not of the sample size to estimate HIV prevalence rate and according to the sampling method (probabilistic or convenience). RESULTS: We identified 75 studies that estimated the HIV prevalence rate among female sex workers. Most of the studies employed convenience samples. The sample size was not adequate to estimate HIV prevalence rate in 35 studies. DISCUSSION: The use of convenience sample limits statistical inference for the whole group. It was observed that there was an increase in the number of published studies since 2005, as well as in the number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HIV; AIDS; Commercial sex workers; Sampling.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000400014
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HIV testing during pregnancy: use of secondary data to estimate 2006 test coverage and prevalence in Brazil BJID
Szwarcwald,Célia Landmann; Barbosa Júnior,Aristides; Souza-Júnior,Paulo Roberto Borges de; Lemos,Kátia Regina Valente de; Frias,Paulo Germano de; Luhm,Karin Regina; Holcman,Marcia Moreira; Esteves,Maria Angela Pires.
This paper describes a methodological proposal based on secondary data and the main results of the HIV-Sentinel Study among childbearing women, carried out in Brazil during 2006. A probabilistic sample of childbearing women was selected in two stages. In the first stage, 150 health establishments were selected, stratified by municipality size (<50,000; 50,000-399,999; 400,000+). In the second stage, 100-120 women were selected systematically. Data collection was based on HIV-test results registered in pre-natal cards and in hospital records. The analysis focused on coverage of HIV-testing during pregnancy and HIV prevalence rate. Logistic regression models were used to test inequalities in HIV-testing coverage during pregnancy by macro-region of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HIV testing; Pregnancy; Pre-natal care; Secondary data; Brazil.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000300002
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