Table 1.
Baseline Patient Characteristics by Treatment Condition and Randomization Status (N = 445)*
| Characteristic | Usual Care | Special Intervention | ||
|---|---|---|---|---|
| Added | Randomized | Randomized | P Value | |
| Mean age, y (± SD) | 45.7 ± 14.7 | 44.4 ± 14.1 | 43.8 ± 13.8 | .70† |
| Gender, n (%) | .19‡ | |||
| Male | 26 (60) | 98 (59) | 158 (67) | |
| Female | 17 (40) | 64 (41) | 77 (33) | |
| Educational level, n (%) | .49‡ | |||
| Less than high school graduate | 1 (3) | 12 (8) | 20 (9) | |
| High school graduate; some college | 24 (60) | 75 (48) | 100 (46) | |
| College graduate or more | 15 (37) | 70 (45) | 97 (45) | |
| Ethnicity, n (%) | .18‡ | |||
| White | 36 (90) | 146 (97) | 193 (95) | |
| Nonwhite | 4 (10) | 5 (3) | 9 (5) | |
| Family history of alcohol abuse, n (%) | .67‡ | |||
| No | 20 (50) | 82 (52) | 103 (47) | |
| Yes | 20 (50) | 75 (48) | 114 (53) | |
| Current smoker | .79‡ | |||
| No | 28 (70) | 109 (68) | 143 (65) | |
| Yes | 12 (30) | 51 (32) | 76 (35) | |
*
Usual care (n=210); special intervention (n = 235).
†
An ANOVA was used to compare practice sites.
‡
The Fisher's exact test was used to assess the independence of proportions.
SD, standard deviation.