Table 1.
Demographic, Alcohol Use, and Smoking Information by Drinker Subgroup
| Variable | Non drinker (n = 42; 20 naltrexone) |
Moderate–light drinker (n = 204; 107 naltrexone) |
Heavy drinker (n = 69; 34 naltrexone) |
p |
|---|---|---|---|---|
| Age (year) | 49.5 (10.0)a | 42.6 (10.5)b | 35.5 (10.8)c | <0.001 |
| Education (year) | 14.2 (1.9)a | 15.3 (2.4)b | 14.9 (1.9)a,b | <0.05 |
| Race (% Caucasian) | 33%a | 61%b | 63%b | <0.01 |
| Sex (% Male) | 43%a | 42%a | 62%b | <0.05 |
| Retention rate | 71% | 78% | 71% | 0.41 |
| Drinking | ||||
| Drinking days/wk | – (−)a | 1.5 (1.5)b | 2.8 (1.7)c | <0.001 |
| Drinks/drinking day | – (−)a | 2.8 (1.5)b | 5.5 (3.0)c | <0.001 |
| Max # drinks in 24 hour | – (−)a | 4.9 (3.5)b | 12.6 (6.3)c | <0.001 |
| % Heavy drinking days/month | – (−)a | 1.2% (1.5)a | 22.7% (19.6)b | <0.001 |
| Past alcohol dependence (%) | 33%a,c | 10%b | 20%c | <0.001 |
| Smoking | ||||
| Cigarettes per day, baseline | 17.4 (5.7) | 16.3 (5.0) | 15.6 (5.6) | 0.22 |
| Smoking urge (baseline BQSU score) | 29.5 (10.9) | 29.3 (11.6) | 30.1 (10.5) | 0.89 |
| Fagerström score | 5.9 (1.9)a | 5.3 (1.8)b | 4.8 (1.84)b | 0.01 |
| Smoking duration (year) | 32.6 (10.1)a | 24.4 (11.0)b | 18.0 (11.1)c | <0.001 |
| Previous quit attempts (>12 hour; #) | 3.5 (3.9) | 4.7 (8.6) | 3.7 (3.6) | 0.57 |
BQSU, Brief Questionnaire of Smoking Urges. Nondrinkers reported no alcohol use in the 6 months prior to their enrollment in the study. All variables were compared across drinker subgroups using analysis of variance, with the exception of sex, race, and past alcohol dependence (chi-square).
Significant differences between subgroups (p < 0.05) are indicated by differing superscripts.
Values are mean (SD) unless otherwise indicated.