Distributions of ZIP code, county and participant characteristics among 8992 people who inject drugs living in 19 US metro areas in 2009
| Characteristics |
Total n (%) or mean (SD) |
| n=8992 | |
| Region* | |
| Northeast | 2116 (23.53) |
| South | 3598 (40.01) |
| Midwest | 938 (10.43) |
| West | 2340 (26.02) |
| MSA (n=19) | |
| County (n=51) | |
| Percent unaffordable rental units among low-income households | 85.18 (6.87) |
| Average number of months that applicants were on waiting lists for assisted housing | 30.03 (17.65) |
| ZIP code (n=939) | |
| Economic deprivation | 2.28 (2.23) |
| Gentrification | 0.41 (1.45) |
| Participant characteristics | |
| Current age | 45.76 (10.54) |
| Male | 6450 (71.73) |
| Race/ethnicity | |
| Latino | 1622 (18.04) |
| Black | 4662 (51.85) |
| White | 2708 (30.12) |
| Annual income (≤US$5000) | 5488 (61.03) |
| Full-time employment | 394 (4.38) |
| Incarceration | 3281 (36.50) |
| Homelessness | 5394 (59.99) |
| Daily injection | 2310 (25.69) |
| Binge drinking | 4939 (54.93) |
| Type of sexual partner in the past 12 months | |
| Main | 4454 (49.53) |
| Casual | 4370 (48.60) |
| Non-injection drug use | 6765 (75.23) |
| Recent HIV test result | |
| Negative result on most recent HIV test | 6986 (77.69) |
| Positive result on most recent HIV test | 495 (5.50) |
*The Northeast region includes the metropolitan statistical areas (MSAs) of Boston, Massachusetts; Nassau-Suffolk, New York; New York, New York; Newark, New Jersey; and Philadelphia, Pennsylvania. Southern region includes Atlanta, Georgia; Baltimore, Maryland; Dallas, Texas; Houston, Texas; Miami, Florida; New Orleans, Louisiana; and District of Columbia. Midwest region includes Chicago, Illinois and Detroit, Michigan. Western region includes Denver, Colorado; Los Angeles, California; San Diego, California; San Francisco, California; and Seattle, Washington.