Table 1.

Within-Group Generalized Linear Model Analyses and Interaction Tests

		Percentage of total study weeks with opioid abstinence		Dropout during total study weeks

Predictor Variables		TES B	Standard B	TES HR	Standard HR
1	Age	0.00^a(0.00)	−0.01^b(0.00)	0.97^a	0.98^a
2	Gender (male)	−0.15^a(0.09)	−0.51^b(0.09)	1.18^a	1.25^a
3	Ethnicity (Hispanic)	0.57^a(0.09)	0.15^b(0.09)	1.50^a	1.01^a
4	Race (White)	0.59^a(0.08)	−0.04^b(0.08)	1.17^a	1.40^a
5	Marital status (married)	−0.10^a(0.13)	−0.80^b(0.16)	0.87^a	0.53^a
6	Years education	−0.08^a(0.02)	−0.03^a(0.02)	0.89^a	1.07^a
7	Employment status (employed)	−0.16^a(0.08)	−0.48^b(0.08)	1.22^a	1.08^a
8	HIV+ (positive)	−0.23^a(0.12)	−0.45^b(0.20)	1.33^a	2.39^a
9	HCV+ (positive)	0.58^a(0.08)	0.02^b(0.09)	1.00^a	1.25^a
10	Past 30 days sedative use	0.41^a(0.08)	−0.09^b(0.09)	1.26^a	1.01^a
11	Past 30 days cocaine/crack use	−0.43^a(0.08)	−0.24^a(0.08)	1.76^a	0.68^b
12	Past 30 days alcohol use to intoxication	0.55^a(0.09)	−0.17^b(0.11)	0.83^a	1.48^a
13	Currently on probation or parole	0.24^a(0.11)	−0.04^a(0.16)	0.93^a	1.41^a
14	Past 30 days sexual behavior	−0.29^a(0.08)	−0.05^b(0.08)	1.56^a	1.27^a
15	Past 30 days injection drug use	−0.28^a(0.09)	−0.07^a(0.08)	1.88^a	1.98^a
16	Beck Depression Inventory	0.00^a(0.00)	0.00^a(0.00)	1.01^a	1.02^a
17	Beck Anxiety Inventory	0.03^a(0.00)	−0.03^b(0.00)	1.00^a	1.01^a
18	HIV and Hepatitis Knowledge	0.00^a(0.02)	−0.02^a(0.02)	1.01^a	1.04^a
19	Recognition	0.00^a(0.00)	0.00^a(0.00)	1.01^a	1.00^a
20	Ambivalence	0.00^a(0.00)	−0.02^b(0.00)	1.00^a	0.99^a
21	Taking Steps	0.00^a(0.00)	0.01^b(0.00)	1.00^a	1.00^a

Note: Gender Female=0, Male =1; Ethnicity Not Hispanic = 0, Hispanic =1; Race Non-White=0, White = 1; Marital Status Non-married =0, Married = 1; Employment Unemployed = 0, Employed = 1; HIV+ HIV negative = 0, HIV positive = 1; Past 30 days sedative use No = 0, Yes = 1; Past 30 days cocaine/crack use No = 0, Yes = 1; Past 30 days alcohol use to intoxication No = 0, Yes = 1; Probation or parole No=0, Yes =1; Last week sexual behavior No=0, Yes=1; Last week injection drug use No=0, Yes=1

Values in bold indicate p < .05, and values in bold and underlined indicate p < .01. The first section presents results from generalized linear modeling analyses that examined each predictor's unique contribution to the percentage of total study weeks with opioid abstinence within each study condition. Higher positive coefficients indicate a greater contribution to the percentage of study weeks with opioid abstinence. The numbers in parentheses are standard errors of unstandardized regression coefficients, B. Labels in the parentheses refer to categories with a value of "1" for dichotomized variables. Superscripts ^a and ^b denoted across conditions indicate significant interaction effects of the predictor. The second section represents hazard ratios from Cox-regression analyses.