Estimates for the proportion of men who have sex with men among men
| Country | Year | Age | Estimate (95% CI) | Definition | Time frame |
| Switzerland1 | 2007 | 17–74 | 2.8 (2.2 to 3.5)* | Sexual intercourse with penetration (Geschlechtsverkehr mit Eindringen/rapports sexuels avec pénétration) | Lifetime |
| Switzerland2 | 2012 | 17–74 | 3.2 (3.0 to 3.8) | (idem) | Lifetime |
| Germany5 | 2006–2010 (yearly) | 20–59 | 2.2 (1.6 to 2.7)(mean) | Sexual relationships (Sexuelle Beziehungen) | Last 12 months |
| France4 | 2008 | 18–69 | 1.4 (1.1 to 1.8) | Same-sex relationships/sexual intercourse (Un partenaire du même sexe, des rapport sexuels) | Last 12 months |
| UK7 | 2010–2012 | 16–74 | 2.6 (2.1 to 3.0) | Oral or anal sex or any other contact involving the genital area | Last 5 years |
| 16–24 | 2.9 | ||||
| 25–34 | 3.2 | ||||
| 35–44 | 3.0 | ||||
| 45–54 | 2.9 | ||||
| 55–64 | 2.3 | ||||
| 16–64 | 2.9 | ||||
| 65–74 | 0.9 |
*The 2007 95% CI for Switzerland is our own calculation based on the weighted published data.