TABLE 2.
Drug use, infectious disease serology and PTSD among 487 IMPACT participants, New York City 2005, by drug use
| Number of paticipants | Injection drug users (%), N = 156 | Non-injection drug users (%), N = 159 | Formera drug users (%), N = 112 | Non-drug users (%), N = 59 | p Valueb | |
|---|---|---|---|---|---|---|
| Drug usec,d | ||||||
| Any drug | 428 | 36.4 | 37.1 | 26.2 | – | <0.00e |
| Heroin | 332 | 46.7 | 32.2 | 21.1 | – | <0.001e |
| Crack | 339 | 41.3 | 38.3 | 20.4 | – | <0.001 |
| Cocaine | 412 | 37.4 | 37.4 | 25.2 | – | <0.001e |
| Methamphetamine | 15 | 66.7 | 26.7 | 6.7 | – | 0.033e |
| LSD | 17 | 82.4 | 17.6 | 0 | – | <0.001e |
| PCP | 49 | 49.0 | 40.8 | 8.2 | – | <0.001e |
| Ecstasy (MDMA) | 29 | 62.1 | 37.9 | 0 | – | <0.001e |
| Ketamine | 4 | 75.0 | 25.0 | 0 | – | 0.462e |
| GHB | 1 | 100.0 | 0 | 0 | – | 0.673e |
| Any unprotected oral, anal or vaginal sexc | 334 | 34.7 | 32.6 | 21.0 | 11.4 | 0.186 |
| Sex with a high-risk partnerc,f | 190 | 43.2 | 27.9 | 18.4 | 10.0 | <0.001 |
| Infectious disease serology | ||||||
| HIV seropositive | 59 | 25.4 | 25.4 | 45.8 | 3.4 | <0.001e |
| HBV seropositive | 156 | 46.2 | 24.4 | 27.6 | 1.9 | <0.001e |
| HCV seropositive | 169 | 68.0 | 7.1 | 24.3 | 0.6 | <0.001e |
| PTSD | ||||||
| Lifetime | 52 | 50.0 | 26.9 | 15.4 | 7.7 | 0.032e |
| Current | 34 | 50.0 | 35.3 | 8.8 | 5.9 | 0.045e |
aFormer Used heroin, crack, cocaine or methamphetamine by any route at least once in lifetime, but not in the last 3 months
bPearson chi-square unless otherwise indicated
cIn last 6 months
dp Value excludes non-drug users
eFisher’s exact test
fHigh-risk partners include partners that had other sex partners, injected drugs, paid or been paid for sex, or were HIV seropositive