BMC Public Health 2008, 8:180 http://www.biomedcentral.com/1471-2458/8/180 Table 3: Details of self-reported previous risk behaviour as rationale for seeking testing Variable Risk behaviour (multiple responses allowed), referenced to time and location as below Unprotected anal intercourse Without ejaculation insertive receptive With ejaculation insertive receptive Condom failure insertive receptive Unprotected vaginal intercourse Without ejaculation With ejaculation Condom failure Oral uptake of body fluids (blood, sperm) Other risk behaviour Risk situations Partners involved in the risk situation (multiple responses allowed) Steady partner Casual partner Anonymous partner HIV serostatus of involved partners Positive serostatus Negative serostatus Serostatus unknown Location of risk situation Privat location (at home) Bathhouse/Darkroom Park/cruising area Private party Other location Time of risk situation 0 – 3 days ago 4 – 14 days ago 15 days – 3 months ago 3 – 6 months ago > 6 months ago n (%) responders* 48 (11.9) 26 (6.5) 35 (8.7) 23 (5.7) 21 (5.2) 14 (3.5) 30 (7.5) 43 (10.7) 19 (4.7) 75 (18.7) 39 (9.7) 79 (19.7) 100 (24.9) 148 (36.8) 28 (7.0) 107 (26.6) 190 (47.3) 172 (42.8) 52 (12.9) 19 (4.7) 10 (2.5) 42 (10.4) 21 (5.2) 30 (7.5) 109 (27.1) 93 (23.1) 52 (12.9) *n varies per item due to item-non-response. % = relative to the entire sample (n = 402) Discussion As other countries Switzerland experiences a high or even rising incidence of HIV and sexually transmitted diseases amongst MSM. The Zurich Checkpoint was established to offer men a comprehensive prevention, testing, counsel- ling, and treatment facility provided by gay health care professionals based on an "open-door" policy. Since its first months of activity, the service achieved high levels of recognition, acceptance and demand in the MSM commu- nity and now plays an important role in HIV/STI counsel- ling and detection. In 2007, 101 new HIV infections in MSM were recorded in Zurich (303 in entire Switzerland). Of these 101 new infections, 57 (56%) were detected at Checkpoint Zurich. Another 14 men (14%) newly diag- nosed with HIV at other sites in Zurich (e.g., laboratories, general practitioners, testing facilities at the university hospitals) were referred to Checkpoint after the initial diag- nosis for further counselling or treatment. In other words, after 6 months of activity Checkpoint was involved in the care of 70% of MSM in Zurich newly diagnosed with HIV. As reported, demand was high and so the initial person- hours (counsellors) were expanded from 640 in 2006 to 1570 (1100 stationary and 470 mobile testing and coun- selling hours) in 2007 and 1800 (1200 stationary and 600 mobile) in 2008. Person-hours of physicians increased from 228 in 2006 to 453 in 2007 and 462 in 2008. Accept- ance within the community was also confirmed in a recent survey study among 379 gay men in Zurich, not necessarily clients of the Checkpoint. In a discrete choice experiment involving vignettes with alternative service descriptions, responders strongly preferred smoking ces- sation services provided by Checkpoint compared to that Page 6 of 9 (page number not for citation purposes)