Table 3.
Results From Cox Proportional Hazards Regression Models for Time to First Lapse
| Covariatea | B (SE) | HR (95% CI for Hazard Odds) |
|---|---|---|
| Time to first drug use day | ||
| Contrast 1: TAU (−) vs RP/MBRP (+) | −0.77 (0.05)b | 0.46 (0.42–0.51) |
| Contrast 2: RP (−) vs MBRP (+) | 0.19 (0.05)b | 1.21 (1.10–1.33) |
| Age | −0.05 (0.002)b | 0.95 (0.95–0.96) |
| Treatment history | −0.04 (0.01)b | 0.96 (0.94–0.98) |
| SDS baseline | 0.17 (0.005)b | 1.18 (1.17–1.19) |
| Treatment hours | −0.05 (0.003)b | 0.95 (0.95–0.96) |
| Treatment site, coded 0, 1 | 0.48 (0.04)b | 1.61 (1.50–1.73) |
| Time to first heavy drinking day | ||
| Contrast 1: TAU (−) vs RP/MBRP (+) | −0.89 (0.05)b | 0.41 (0.37–0.46) |
| Contrast 2: RP (−) vs MBRP (+) | 0.02 (0.06) | 0.72 (0.91–1.15) |
| Age | 0.01 (0.002)b | 1.01 (1.01–1.02) |
| Treatment history | 0.07 (0.01)b | 1.08 (1.05–1.10) |
| SDS baseline | 0.08 (0.006)b | 1.08 (1.07–1.09) |
| Treatment hours | 0.001 (0.003) | 1.001 (0.99–1.01) |
| Treatment site, coded 0, 1 | −0.71 (0.05)b | 0.49 (0.45–0.54) |
Abbreviations: B, unstandardized regression coefficient; HR, hazard ratio; MBRP, mindfulness-based relapse prevention; RP, relapse prevention; SDS, Severity of Dependence Scale; TAU, treatment as usual.
a
Contrast 1 was coded with TAU as negative and RP/MBRP as positive; contrast 2 was coded with RP as negative and MBRP as positive.
b
P < .05.