Validity of self-reported 'safe sex' among female sex workers in Mombasa, Kenya--PSA analysis.

Abstract:

:We assessed the validity of self-reported sex and condom use by comparing self-reports with prostate-specific antigen (PSA) detection in a prospective study of 210 female sex workers in Mombasa, Kenya. Participants were interviewed on recent sexual behaviours at baseline and 12-month follow-up visits. At both visits, a trained nurse instructed participants to self-swab to collect vaginal fluid specimens, which were tested for PSA using enzyme-linked immunosorbent assay (ELISA). Eleven percent of samples (n = 329) from women reporting no unprotected sex for the prior 48 hours tested positive for PSA. The proportions of women with this type of discordant self-reported and biological data did not differ between the enrolment and 12-month visit (odds ratio [OR] 1.1; 95% confidence interval [CI] 0.99, 1.2). The study found evidence that participants failed to report recent unprotected sex. Furthermore, because PSA begins to clear immediately after exposure, our measures of misreported semen exposure likely are underestimations.

journal_name

Int J STD AIDS

authors

Gallo MF,Behets FM,Steiner MJ,Thomsen SC,Ombidi W,Luchters S,Toroitich-Ruto C,Hobbs MM

doi

10.1258/095646207779949899

subject

Has Abstract

pub_date

2007-01-01 00:00:00

pages

33-8

issue

1

eissn

0956-4624

issn

1758-1052

journal_volume

18

pub_type

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