Table 2.
Injection behavior and sexual behavior of injection drug users by age group, San Francisco, 1996
| Age | ||
|---|---|---|
| Behavior | <30 years (n = 135) | ≥30 years (n = 96) |
| Injection behavior | ||
| Median (range) number of years injecting | 5 (0-17) | 20 (1-47) |
| Median total number (range) injections in past month | 50 (1-600) | 90 (1-900) |
| Drugs injected in past month*: | ||
| Heroin | 104 (77) | 76 (79) |
| Cocaine | 34 (25) | 32 (33) |
| Methamphetamine* | 70 (52) | 28 (29) |
| Shared needles past month* | 36 (27) | 12 (13) |
| Ever overdosed† | 59 (44) | 42 (44) |
| Had drug treatment in the past year‡ | 42 (31) | 36 (38) |
| Sexual behavior | ||
| Type of sexual behavior in the past 6 months: | ||
| Men | ||
| Exclusively heterosexual* | 62/91 (68) | 49/70 (70) |
| Bisexual | 28/91 (31) | 13/70 (19) |
| Exclusively homosexual | 1/91 (1) | 8/70 (11) |
| Women | ||
| Exclusively heterosexual | 17/41 (42) | 12/23 (52) |
| Bisexual | 22/41 (54) | 9/23 (39) |
| Exclusively homosexual | 2/41 (5) | 2/23 (9) |
| Had ≥2 sexual partners in past 6 months* | 80 (59) | 29 (30) |
| No condom used during last sexual encounter§ | 59/126 (47) | 39/67 (58) |
| Had a sexually transmitted disease in the past year | 16 (12) | 3 (3) |
| Exchanged sex for money or drugs in the past year | 14 (10) | 9 (9) |
| Values are numbers (percentages) unless otherwise indicated | ||
*
P < 0.05
†
Self-reported
‡
Includes methadone treatment
§
Denominator is the number who were sexually active in past 6 months