Assessment of HIV-related risky behaviour: a comparative study of face-to-face interviews and polling booth surveys in the general population of Cotonou, Benin

L Béhanzin, S Diabaté, I Minani, CM Lowndes… - Sexually transmitted …, 2013 - sti.bmj.com
L Béhanzin, S Diabaté, I Minani, CM Lowndes, MC Boily, AC Labbé, S Anagonou…
Sexually transmitted infections, 2013sti.bmj.com
Objectives During the 2008 HIV prevalence survey carried out in the general population of
Cotonou, Benin, face-to-face interviews (FTFI) were used to assess risky behaviours for HIV
and other sexually transmitted infections (STI). We compared sexual behaviours reported in
FTFI with those reported in polling booth surveys (PBS) carried out in parallel in an
independent random sample of the same population. Methods In PBS, respondents grouped
by gender and marital status answered simple questions by putting tokens with question …
Objectives
During the 2008 HIV prevalence survey carried out in the general population of Cotonou, Benin, face-to-face interviews (FTFI) were used to assess risky behaviours for HIV and other sexually transmitted infections (STI). We compared sexual behaviours reported in FTFI with those reported in polling booth surveys (PBS) carried out in parallel in an independent random sample of the same population.
Methods
In PBS, respondents grouped by gender and marital status answered simple questions by putting tokens with question numbers in a green box (affirmative answers) or a red box (negative answers). Both boxes were placed inside a private booth. For each group and question, data were gathered together by type of answer. The structured and gender-specific FTFI guided by trained interviewers included all questions asked during PBS. Pearson χ2 or Fisher's exact test was used to compare FTFI and PBS according to affirmative answers.
Results
Overall, respondents reported more stigmatised behaviours in PBS than in FTFI: the proportions of married women and men who reported ever having had commercial sex were 17.4% and 41.6% in PBS versus 1.8% and 19.6% in FTFI, respectively. The corresponding proportions among unmarried women and men were 16.1% and 25.5% in PBS versus 3.9% and 13.0% in FTFI, respectively. The proportion of married women who reported having had extramarital sex since marriage was 23.6% in PBS versus 4.6% in FTFI.
Conclusions
PBS are suitable to monitor reliable HIV/STI risk behaviours. Their use should be expanded in behavioural surveillance.
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