Table 1.
Demographics and Drug Use at Baseline
| Shanghai (n=159) | Kunming (n=160) | Total (n=319) | ||||
|---|---|---|---|---|---|---|
| Incentive Group (n=80) |
Usual Care Group (n=79) |
Incentive Group (n=80) |
Usual Care Group (n=80) |
Incentive Group (n=160) |
Usual Care Group (n=159) |
|
| Female, % | 18.8 | 25.3 | 27.5 | 23.8 | 23.1 | 24.5 |
| Mean age (SD)b | 40.2 (7.9) | 39.5 (7.9) | 36.2 (7.9) | 36.3 (7.7) | 38.2 (8.1) | 37.9 (7.9) |
| Less than high school, %b | 52.5 | 60.8 | 82.5 | 74.7 | 67.5 | 67.7 |
| Marital status, % | ||||||
| Married | 31.3 | 41.7 | 35.0 | 40.5 | 33.1 | 41.1 |
| Previously married | 22.5 | 8.9 | 13.8 | 21.5 | 18.1 | 15.2 |
| Never married | 46.3 | 49.4 | 51.3 | 38.0 | 48.8 | 43.7 |
| Employed, %b | 38.8 | 27.9 | 55.0 | 55.7 | 46.9 | 41.8 |
| Arrest history, %b | 26.3 | 25.3 | 50.0 | 52.5 | 38.1 | 39.0 |
| Prior alcohol/drug treatment-lifetime, %b | 82.5 | 92.4 | 71.3 | 67.5 | 76.9 | 80.0 |
| Drug use history | ||||||
| Age of first use (SD)b | 29.5 (7.6) | 26.8 (7.8) | 25.2 (6.0) | 25.6 (6.9) | 27.3 (8.1) | 26.2 (7.4) |
| Years of use (SD)b | 7.7 (4.2) | 9.3 (5.2) | 9.8 (6.2) | 10.7 (7.4) | 8.8 (5.4) | 10.1 (6.4) |
| Injection in past 30 days, % | 60.5 | 65.8 | 55.3 | 49.3 | 57.9 | 57.6 |
a
significant main effect of group (p<.05);
b
significant main effect of site (p<.05);
c
significant interaction effect (p<.05)