STI clinic clientsArchived
Behavioural surveillance in STI clinics is venue-based sampling. The examples of designs for data collection in the table below include various methods that can be used in different settings and sampling populations. Each of the data collection methods described can, in principle, be applied to any of the settings or study populations, unless otherwise specified. The examples cited are not comprehensive.
Selected features of available methods for collecting behavioural data among STI clinic attenders
Design | Advantages | Disadvantages | Comments |
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Data collection methods |
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Continuous data collection |
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Periodic surveys, e.g. during one week per year, three months per year (a), or alternate years |
Limits workload for clinic staff | Time period selected might not be representative of all periods |
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Unlinked anonymous data collection (b,c,d) |
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Only for use with populations having specific tests, e.g. HIV tests done on all patients having syphilis serology
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Settings for data collection |
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All clinics (e) |
National data |
Logistically intensive and expensive for linking behavioural and test data |
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Sentinel clinics/sites (a,b,c,d,f) | More efficient as number of clinics is limited |
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Populations | |||
All STI clinic attenders (b,c,f) | Allows comparison between people with STI and people without | Requires sophisticated IT infrastructure to link behavioural data with STI/HIV test data | |
STI clinic attenders having specific tests, e.g. HIV tests (f) |
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STI clinic attenders with specific diagnosed infections, e.g. syphilis, gonorrhoea (a), LGV, or a range of infections (g) |
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Examples(a) UK: Gonococcal Resistance to Antimicrobials Surveillance Programme. Since 2003 in sentinel clinics.
(b) UK: Unlinked Anonymous Survey of Genitourinary Medicine Clinic Attendees. Since 1995 in 16 sentinel clinics.
(c) Netherlands: Unlinked anonymous HIV testing. Since 1991 in Amsterdam and Rotterdam.
(d) Spain: Unlinked anonymous survey on HIV prevalence. 1998-2002, 7 sentinel STI clinics around the country.
(e) Netherlands: Behavioural surveillance in STI clinic attenders having HIV tests. National since 2004.
(f) Spain: EPI-VIH survey. Since 1991, now includes 19 clinics
(g) Germany: Sentinel surveillance system for STI. Since 2002, sentinel sites. STD-Sentinel des RKI: Ausgewählte Ergebnisse unter dem Aspekt der Migration und Prostitution. Epid Bull 2007; 4:23-27;
Bremer V, Marcus U, Hofmann A, Hamouda O. Building a sentinel surveillance system for sexually transmitted infections in Germany, 2003. Sex Transm Infect. 2005 Apr;81(2):173-9.