Table 2.
Significant predictor variables for early dropout and attrition after backward deletion (N=157).
| Treatment dropouta | Cox-Snell R 2 | Nagelkerke R 2 | B (SE) | χ2 1 | P | OR (95% CI) | |
| Early dropout | .18 | .39 |
|
|
|
|
|
|
|
TCS |
|
|
–0.14 (0.04) | 10.5 | .001 | 0.87 (0.80-0.95) |
| Attrition | .19 | .28 |
|
|
|
|
|
|
|
Baseline stress symptoms |
|
|
0.08 (0.05) | 3.2 | .05 | 1.08 (1.00-1.18) |
|
|
ZTPI Hedonistic |
|
|
0.32 (0.10) | 10.3 | .001 | 1.37 (1.13-1.66) |
|
|
IMI |
|
|
–0.06 (0.03) | 5.7 | .02 | 0.94 (0.90-0.99) |
aIMI: Intrinsic Motivation Inventory; TCS: Treatment Credibility Scale; ZTPI: Zimbardo Time Perspective Inventory.