Table 1.
Univariate Comparison of Heavy Drinkers With and Without Co-Occurring Marijuana Use.
| With Co- Occurring Marijuana Use (n = 51) |
Without Co- Occurring Marijuana Use (n = 71) |
Statistic | p | |
|---|---|---|---|---|
| Alcohol Consumption | ||||
| Frequency of Drinking (Days/Week) | 3.61 (1.17) | 3.57 (1.28) | t(120) = −0.13 | .90 |
| Quantity of Drinks on Drinking Days | 6.75 (3.77) | 5.91 (2.82) | t(120) = −1.40 | .16 |
| Frequency of Binge Drinking in 2-Hour Period | 4.84 (1.45) | 4.82 (1.54) | t(120) = −0.10 | .92 |
| Frequency of Binge Drinking in 1 Day | 5.76 (0.99) | 5.68 (0.98) | t(120) = −0.49 | .63 |
| Peak Quantity of Drinks (Past 3 Months) | 16.41 (6.61) | 16.48 (7.11) | t(120) = 0.05 | .96 |
| Peak Quantity of Drinks (Lifetime) | 20.27 (7.19) | 20.96 (7.81) | t(120) = 0.49 | .62 |
| Young Adult Alcohol Consequences Questionnaire | ||||
| Total | 22.80 (9.91) | 20.25 (10.34) | t(120) = −1.37 | .18 |
| Social-Interpersonal Consequences | 3.65 (1.74) | 3.06 (1.89) | t(120) = −1.75 | .08 |
| Impaired Control | 3.47 (1.73) | 3.65 (1.78) | t(120) = 0.55 | .58 |
| Self-Perception | 1.71 (1.58) | 1.49 (1.53) | t(120) = −0.75 | .46 |
| Self-Care | 3.14 (2.58) | 2.90 (2.40) | t(120) = −0.53 | .60 |
| Risk Behaviors | 3.25 (2.11) | 2.48 (1.87) | t(120) = −2.14 | .04 |
| Academic/Occupational Consequences | 1.37 (1.34) | 1.41 (1.46) | t(120) = 0.14 | .89 |
| Physical Dependence (% endorsed any items) | 76 | 70 | χ2(1) = 0.46 | .50 |
| Blackout Drinking | 4.98 (1.98) | 4.28 (2.18) | t(120) = −1.81 | .07 |
| Contemplation Ladder Score | 5.08 (2.58) | 5.23 (1.95) | t(89) = 0.34 | .73 |
| Cigarette Use | ||||
| Ever Smoked a Cigarette (%) | 86 | 63 | χ2(1) = 7.57 | < .01 |
| Currently Smoke Cigarettes (%) | 42 | 28 | χ2(1) = 2.51 | .11 |
| FTND (among current cigarette smokers) | 1.37 (2.41) | 2.26 (2.60) | t(36) = 1.10 | .28 |
| Trait Impulsivity | ||||
| BIS-11 Attentional Impulsiveness | 17.74 (3.76) | 16.67 (3.85) | t(120) = −1.54 | .13 |
| BIS-11 Motor Impulsiveness | 23.69 (5.58) | 22.87 (4.56) | t(120) = −0.89 | .38 |
| BIS-11 Nonplanning Impulsiveness | 25.69 (4.56) | 22.57 (5.39) | t(120) = −3.35 | <.01 |
| UPPS+P Negative Urgency | 2.46 (0.44) | 2.36 (0.46) | t(120) = −1.27 | .21 |
| UPPS+P (Lack of) Premeditation | 2.23 (0.45) | 2.28 (0.45) | t(120) = 0.56 | .58 |
| UPPS+P (Lack of) Perseverance | 2.00 (0.50) | 1.79 (0.48) | t(120) = −2.26 | .03 |
| UPPS+P Sensation-Seeking | 2.89 (0.54) | 2.79 (0.61) | t(120) = −0.98 | .33 |
| UPPS+P Positive Urgency | 2.08 (0.44) | 2.00 (0.44) | t(120) = −0.99 | .32 |
| Drinking-Induced Disinhibition Scale | ||||
| Euphoric/Social | 4.11 (1.18) | 3.91 (1.13) | t(120) = −0.96 | .34 |
| Dysphoric | 2.54 (1.11) | 2.14 (1.05) | t(120) = −2.02 | < .05 |
| Sexual Disinhibition | 3.92 (1.49) | 3.25 (1.54) | t(120) = −2.39 | .02 |
| Medication Adherence Questionnaire | ||||
| Unintentional Nonadherence (% nonadherent) | 48 | 23 | χ2(1) = 7.49 | < .01 |
| Purposeful Nonadherence (% nonadherent) | 59 | 31 | χ2(1) = 8.63 | < .01 |
Note. Unless otherwise noted, means (standard deviations) are presented. Items on frequency of binge drinking were rated such that: 1 = 1 or 2 days in the past 3 months; 2 = one day/month; 3 = 2-3 times/month; 4 = 1 day/week; 5 = 2 days/week; 6 = 3-4 times/week; 7 = 5-6 times/week; and 8 = every day. FTND = Fagerström Test for Nicotine Dependence, BIS-11 = Barratt Impulsivity Scale, Version 11, UPPS+P = UPPS+P Impulsive Behavior Scale.