Table 2.
Multivariable logistic regression analyses* for point prevalence abstinence†, 6-month continuous abstinence†, and sustained abstinence
| Point prevalence abstinence † | |||
|---|---|---|---|
|
Variable |
OR |
95% CI for OR |
p-value |
|
‡ Program; HIT vs. LIT (ref) |
1.21 |
0.59-2.49 |
.599 |
|
‡ Gender; men vs. women (ref) |
0.54 |
0.20-1.46 |
.226 |
|
‡ Point prevalence at 12-month follow-up; yes vs. no (ref) |
13.82 |
6.44–29.65 |
<.001 |
|
‡ Other support at 12-month follow-up; yes vs. no (ref) |
4.37 |
1.13–16.95 |
.033 |
|
§ Program; HIT vs. LIT (ref) |
1.12 |
0.56-2.26 |
.751 |
|
§ Gender; men vs. women (ref) |
0.67 |
0.26-1.71 |
.405 |
|
§ 6-month continuous abstinence at 12-month follow-up; yes vs. no (ref) |
13.53 |
5.66–32.32 |
<.001 |
|
§ Other support at 12-month follow-up; yes vs. no (ref) |
4.95 |
1.30–18.85 |
.019 |
|
6-month continuous abstinence † | |||
|
Variable |
OR |
95% CI for OR |
p-value |
|
║ Program; HIT vs. LIT (ref) |
1.26 |
0.65-2.43 |
.487 |
|
║ Gender; men vs. women (ref) |
0.55 |
0.23-1.35 |
.193 |
|
║ Point prevalence at 12-month follow-up; yes vs. no (ref) |
14.10 |
7.05–28.19 |
<.001 |
|
¶ Program; HIT vs. LIT (ref) |
1.10 |
0.57-2.13 |
.779 |
|
¶ Gender; men vs. women (ref) |
0.62 |
0.26-1.51 |
.297 |
|
¶ 6-month continuous abstinence at 12-month follow-up; yes vs. no (ref) |
18.70 |
8.30–42.16 |
<.001 |
|
Sustained abstinence ** | |||
|
Variable |
OR |
95% CI for OR |
p-value |
| Program; HIT vs. LIT (ref) |
3.44 |
1.34–8.83 |
.010 |
| Gender; men vs. women (ref) | 1.21 | 0.41-3.60 | .733 |
* Performed with variables significant at p<0.02 in the univariable analyses, only including variables up to 12-month follow-up.
† Separate models for point prevalence at 12-month follow-up and for 6-month continuous abstinence at 12-month follow-up.
‡ N=210, Nagelkerke R-Square 39.2%, Hosmer and Lemeshow test of goodness of fit p=0.884.
§ N=210, Nagelkerke R-Square 33.5%, Hosmer and Lemeshow test of goodness of fit p=0.920.
║N=284, Nagelkerke R-Square 31.7%, Hosmer and Lemeshow test of goodness of fit p=0.969.
¶ N=284, Nagelkerke R-Square 30.7%, Hosmer and Lemeshow test of goodness of fit p=0.932.
** N=210, Nagelkerke R-Square 11.7%, Hosmer and Lemeshow test of goodness of fit p=0.970.