Sexual activity of the Vancouver injection drug users study (VIDUS) cohort stratified by sex
| Sexual activity | Male (n=932) | Female (n=505) | p Value |
|---|---|---|---|
| Values are n (%) unless specified. | |||
| Age at first sex (mean (range)) (years) | 14.7 (11 to 24) | 14.9 (9 to 22) | 0.02 |
| Any sexual activity (past 6 months) | 669 (72) | 464 (92) | 0.001 |
| Of those having sex: | |||
| opposite sex only | 583 (87) | 385 (83) | |
| same sex only | 49 (7) | 16 (4) | |
| same and opposite sex | 37 (6) | 63 (13) | 0.001 |
| Number of lifetime partners | |||
| 5 or less | 130 (14) | 55 (11) | |
| 6–19 | 229 (25) | 75 (15) | |
| 20–99 | 370 (40) | 87 (17) | |
| 100–499 | 161 (17) | 93 (18) | |
| 500 or more | 42 (4) | 195 (39) | 0.001 |