Table 1.
Pretreatment Characteristics for Participants by Treatment Condition
| Characteristic | IBT (n = 31) M(SD) or No (%) | BCT (n = 30) M(SD) or No (%) | t or χ2 | p |
|---|---|---|---|---|
|
| ||||
| Female age | 38.9 (10.0) | 38.5 (10.4) | 0.15 | 0.878 |
| Female education | 13.7 (2.6) | 13.3 (1.9) | 0.64 | 0.522 |
| Male age | 43.2 (10.6) | 42.3 (10.4) | 0.36 | 0.722 |
| Male education | 12.9 (1.6) | 13.2 (3.7) | 0.41 | 0.684 |
| Years married or cohabiting | 11.4 (11.1) | 8.0 (7.6) | 1.40 | 0.166 |
| Child age 6-16 living in home | 14 (45) | 12 (40) | 0.17 | 0.684 |
| Annual female median income | $20,000 | $15,000 | —a | 0.789 |
| Annual male median income | $42,500 | $42,000 | —a | 0.898 |
| Female ethnicity: | 2.00 | 0.367 | ||
| White | 27 (87) | 26 (87) | ||
| African-American | 3 (10) | 1 (3) | ||
| Hispanic | 1 (3) | 3 (10) | ||
| American Indian | 0 | 0 | ||
|
| ||||
| Male ethnicity: | 2.36 | 0.501 | ||
| White | 27 (87) | 24 (80) | ||
| African-American | 1 (3) | 3 (10) | ||
| Hispanic | 2 (7) | 3 (10) | ||
| American Indian | 1 (3) | 0 | ||
| Female employment: | 3.41 | 0.491 | ||
| Not employed | 16(52) | 15 (50) | ||
| Employed full-time | 4 (13) | 5 (17) | ||
| Employed part-time | 6 (19) | 2 (7) | ||
| Homemaker | 2 (7) | 5 (17) | ||
| Other | 3 (10) | 3 (10) | ||
|
| ||||
| Years female problematic substance use | 14.3 (10.9) | 13.8 (11.3) | 0.16 | 0.872 |
| Female InDUC-Lifetime total score Female current substance dependence dx | 35.19 (7.92) | 35.97 (5.16) | 0.45 | 0.654 |
| Alcohol | 4 (13) | 9 (30) | —b | 0.127 |
| Cannabis | 5 (16) | 7 (23) | 0.50 | 0.479 |
| Cocaine | 10 (32) | 12 (40) | 0.40 | 0.529 |
| Opioid | 22 (71) | 23 (77) | 0.26 | 0.613 |
| Sedatives | 9 (29) | 9 (30) | 0.01 | 0.934 |
| Stimulants | 5 (16) | 0 | —b | 0.053 |
| Other | 3 (10) | 0 | —b | 0.238 |
|
| ||||
| Female primary substance of abuse | ||||
| Alcohol | 0 | 0 | — | — |
| Cannabis | 2 (7) | 3 (10) | —b | 0.671 |
| Cocaine | 7 (23) | 6 (20) | 0.06 | 0.806 |
| Opioid | 17(55) | 17 (57) | 0.02 | 0.886 |
| Sedatives | 3 (10) | 4 (13) | —b | 0.707 |
| Stimulants | 2 (7) | 0 | —b | 0.492 |
| Other | 0 | 0 | — | — |
|
| ||||
| Male current substance dependence dx | ||||
| None | 20 (65) | 21 (70) | 0.21 | 0.648 |
| Alcohol | 1 (3) | 3 (10) | —b | 0.354 |
| Cannabis | 2 (7) | 2 (7) | —b | 1.00 |
| Cocaine | 4 (13) | 0 | —b | 0.113 |
| Opioid | 7 (23) | 6 (20) | 0.06 | 0.806 |
| Sedatives | 3 (10) | 1 (3) | —b | 0.612 |
| Stimulants | 1 (3) | 0 | —b | 1.00 |
| Other | 1 (3) | 0 | —b | 1.00 |
|
| ||||
| Dual problem couple | 14 (45) | 14 (47) | 0.01 | 0.906 |
Note. IBT = individual-based treatment. BCT = behavioral couples therapy plus IBT. Dx = DSM-IV diagnosis.
a
The p-value for this variable comes from a non-parametric independent samples median test.
b
The p-value for this variable comes from Fisher’s Exact Test because the data did not meet assumptions for chi-square.