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Table 1 Sample characteristics among people who inject drugs in San Francisco, for total sample (N = 702) and subjects reporting past 24 h pain (n = 335)
| Characteristic | Pain past 24 h n (%) | Total sample n (%) | P-value |
|---|---|---|---|
| Mean age (range) | 46.6 (19–69) | 45.1 (18–69) | <0.001*** |
| Sex | |||
| Female | 74 (22.1%) | 147 (20.9%) | 0.48 |
| Male | 261 (77.9%) | 555 (79.1%) | |
| Race | |||
| White | 179 (53.4%) | 379 (54.0%) | 0.91 |
| Black | 86 (25.7%) | 181 (25.8%) | |
| Hispanic | 20 (6.0%) | 46 (6.6%) | |
| Other | 48 (14.3%) | 91 (13.0%) | |
| Missing | 2 (0.6%) | 5 (0.7%) | |
| Homeless | 208 (62.1%) | 442 (63.0%) | 0.65 |
| Graduated from high school/got a GED | 250 (74.6%) | 509 (72.5%) | 0.23 |
| Ever diagnosed with a psychiatric illness* | 207 (61.8%) | 396 (56.4%) | 0.01* |
| Health care need for an acute, chronic or dental problem in the past 6 months* | |||
| No need | 43 (12.8%) | 122 (17.4%) | <0.01* |
| Met healthcare need | 94 (28.1%) | 204 (29.1%) | |
| Unmet healthcare need | 198 (59.1%) | 376 (53.6%) | |
| NMPOU past 24 h | 53 (15.8%) | 103 (14.7%) | 0.41 |
| NMPOU (except methadone and buprenorphine) past 24 h | 50 (14.9%) | 89 (12.7%) | 0.09 |
| Non-medical use of tranquilizers/sedatives past 24 h | 23 (6.9%) | 43 (6.1%) | 0.44 |
| Non-medical use of prescription stimulants past 24 h | 2 (0.6%) | 6 (0.9%) | 0.48 |
| Non-medical use of Methadone past 24 h | 9 (2.7%) | 23 (3.3%) | 0.40 |
| Non-medical use of buprenorphine/Suboxone past 24 h | 0 | 1 (0.1%) | NA |
| Non-medical use of Phenergan past 24 h | 3 (0.9%) | 4 (0.6%) | 0.27 |
| Used Speedball (heroin/cocaine or heroin/crack) past 24 h | 21 (6.3%) | 42 (6.0%) | 0.76 |
| Used Goofball (heroin/methamphetamine) past 24 h | 24 (7.2%) | 40 (5.7%) | 0.11 |
| Used Crack or Rock Cocaine past 24 h | 66 (19.7%) | 139 (19.8%) | 0.95 |
| Used Powder Cocaine past 24 h | 6 (1.8%) | 15 (2.1%) | 0.55 |
| Used Methamphetamine past 24 h | 92 (27.5%) | 194 (27.6%) | 0.92 |
| Used Heroin past 24 h | 80 (23.9%) | 173 (24.6%) | 0.65 |
| Used Marijuana for non-medical reasons past 24 h | 124 (37.0%) | 258 (36.8%) | 0.89 |
| Used any type of street heroin past 24 h | 93 (27.8%) | 194 (27.6%) | 0.94 |
