Baseline Characteristics, Health Status, and Drug Use by Weekend-Only vs Not–Weekend-Only Drug Use
| Variables | Total (n = 483) | Weekend-Only Use (n = 52) | Not–Weekend-Only Use (n = 431) | P Value |
|---|---|---|---|---|
| Age in years, mean (SD) | 41.6 (12.4) | 44.5 (12.8) | 41.3 (12.3) | .07 |
| Female, n (%) | 151 (31.3%) | 14 (26.9%) | 137 (31.8%) | .47 |
| Race, n (%) | ||||
| White | 95 (19.7%) | 9 (17.3%) | 86 (20.0%) | .65 |
| African American | 316 (65.4%) | 36 (69.2%) | 280 (65.0%) | .54 |
| Hispanic | 56 (11.6%) | 5 (9.6%) | 51 (11.8%) | .64 |
| Primary language English, n (%) | 446 (92.3%) | 48 (92.3%) | 398 (92.3%) | >.99 |
| Continental United States born, n (%) | 419 (86.7%) | 42 (80.8%) | 377 (87.5%) | .18 |
| High school graduation or more, n (%) | 336 (69.6%) | 33 (63.5%) | 303 (70.3%) | .31 |
| 1+ nights past 3 months on street or in shelter, n (%) | 72 (14.9%) | 10 (19.2%) | 62 (14.4%) | .35 |
| Private health insurance, n (%) | 65 (13.5%) | 6 (11.5%) | 59 (13.7%) | .15 |
| Total monthly income, n (%) | ||||
| ≤$250 | 104 (21.9%) | 13 (26.0%) | 91 (21.4%) | .70 |
| $251–$750 | 132 (27.8%) | 12 (24.0%) | 120 (28.2%) | .70 |
| $751–$1500 | 143 (30.1%) | 13 (26.0%) | 130 (30.6%) | .70 |
| >$1500 | 96 (20.2%) | 12 (24.0%) | 84 (19.8%) | .70 |
| Health status: EUROQOL7 (0 to 100), mean (SD) | 70.0 (20.3) | 71.5 (21.4) | 69.8 (20.1) | .58 |
| Depressive symptoms (PHQ98 total score), mean (SD) | 7.9 (6.6) | 7.4 (6.7) | 7.9 (6.6) | .52 |
| Anxiety symptoms (OASIS9 score), mean (SD) | 5.5 (5.4) | 5.5 (5.2 | 5.5 (5.5) | .78 |
| Employed full-time or part-time, n (%) | 139 (28.8%) | 13 (25.0%) | 126 (29.2%) | .76 |
| Unemployed | 340 (70.4%) | 39 (75.0%) | 301 (69.8%) | .76 |
| Reported illegal income, n (%) | 44 (9.1%) | 4 (7.7%) | 40 (9.3%) | >.99 |
| Unhealthy alcohol use (AUDIT-C10 positive), n (%) | 304 (62.9%) | 33 (63.5%) | 271 (62.9%) | .93 |
| Drug use consequences (SIP-D11 score, 0–15), mean (SD) | 11.2 (11.1) | 9.5 (12.6) | 11.4 (13.2) | .08 |
| Drug use severity (Global ASSIST score), mean (SD) | 21.3 (17.7) | 19.3 (14.9) | 21.5 (18.0 | .31 |
| Number of days used in past 30a | 14 (4–28) | 2 (2–4) | 16 (6–29) | <.001 |
| Drug of most concern, n (%) | ||||
| Marijuana | 316 (65.4%) | 25 (48.1%) | 291 (67.5%) | <.001 |
| Opioids | 72 (14.9%) | 7 (13.5%) | 65 (15.1%) | .76 |
| Cocaine | 88 (18.2%) | 20 (38.5%) | 68 (15.8%) | <.001 |
| Other | 7 (1.4%) | 0 (0.0%) | 7 (1.6%) | >. 99 |
↵a Expressed as median (IQR) with Wilcoxon signed rank test.