Table 1.
Characteristics in the prior six months of 1525 African American injection drug users at study entry and over 8181 person-years of follow-up, ALIVE cohort, 1988–2008.
| Characteristic | Entry (n = 1525 participants) | Follow-up (n = 8181 person-years) |
|---|---|---|
| Age, years a | 37 (32; 42) | 42 (36; 48) |
| Older than age 37 years; % (no.) | 48 (736) | 72 (5890) |
| Female sex; % (no.) | 28 (428) | 28 (2291) |
| Education, years a | 10 (10; 12) | 10 (10; 12) |
| More than 10 years of education; % (no.) | 43 (662) | 44 (3600) |
| Cocaine use; b % (no.) | 78 (1184) | 58 (4745) |
| Number of sexual partners; % (no.) | ||
| >1 | 40 (604) | 29 (2373) |
| 1 | 43 (661) | 47 (3845) |
| 0 | 17 (260) | 24 (1963) |
| Male having sex with a man; % (no.) | 1 (16) | 0.6 (49) |
| Any sexually transmitted infections; c % (no.) | 3 (52) | 2 (164) |
| Number of drug injections/week a | 6 (1; 14) | 1 (0; 7) |
| Number of drug injections/week; % (no.) | ||
| 1–39 | 80 (1222) | 58 (4745) |
| 0 | 20 (303) | 42 (3436) |
| Inject heroin only; % (no.) | 61 (929) | 42 (3436) |
| Inject cocaine only; % (no.) | 57 (867) | 36 (2945) |
| Inject both heroin and cocaine; % (no.) | 57 (865) | 39 (3191) |
| Attended shooting gallery; % (no.) | 13 (199) | 6 (491) |
| Number of drinks/week a | 8 (1; 28) | 4 (0; 18) |
| Number of drinks/week; % (no.) | ||
| 21–140 | 32 (491) | 23 (1882) |
| 1–20 | 44 (668) | 40 (3272) |
| 0 | 24 (366) | 37 (3027) |
a
Median (quartiles).
b
Crack, snort cocaine, inject cocaine only, and inject both heroin and cocaine.
c
Genital herpes simplex virus, genital warts, gonorrhea, or syphilis.