Table 3.
Means and standard deviations for 361 college drinkers and by latent class membership; ANCOVA p-values for class comparisons on selected variables using adjusted least squares means.
| Risk Factor | Entire sample (N = 361) mean (sd) |
Class 1 (n=217) mean (sd) |
Class 2 (n=114) mean (sd) |
Class 3 (n=30) mean (sd) |
2 vs.3 p-value |
1 vs. 3 p-value |
1 vs. 2 p-value |
|---|---|---|---|---|---|---|---|
| Age of initiationa | 15.6 (1.64) | 15.9 (1.56) | 15.4 (1.62) | 14.3 (1.63) | 0.003 | <0.0001 | 0.008 |
| Drinks per weekb | 10.7 (13.30) | 5.89 (9.00) | 16.2 (13.8) | 24.6 (19.2) | 0.172 | <0.0001 | <0.0001 |
| Drinks per drinking dayb |
5.44 (4.11) | 4.09 (3.61) | 7.28 (3.86) | 8.36 (4.40) | 0.372 | <0.0001 | <0.0001 |
| Weekly frequency of binge drinkingb |
1.19 (1.27) | 0.74 (1.06) | 1.75 (1.24) | 2.21 (1.39) | 0.303 | <0.0001 | <0.0001 |
| MOTIVES c | |||||||
| Social | 3.02 (1.00) | 2.73 (0.97) | 3.40 (0.86) | 3.65 (0.88) | 0.669 | 0.019 | 0.001 |
| Coping | 2.10 (1.12) | 1.74 (0.92) | 2.48 (1.15) | 3.22 (1.19) | 0.023 | <0.0001 | <0.0001 |
| Enhancement | 2.73 (1.17) | 2.28 (1.05) | 3.25 (0.96) | 3.94 (0.98) | 0.014 | <0.0001 | <0.0001 |
| IMPULSIVENESS c | |||||||
| Attentional | 17.2 (4.54) | 16.2 (4.30) | 18.2 (4.46) | 20.9 (3.97) | 0.025 | 0.0002 | 0.008 |
| Non-planning | 24.6 (5.46) | 23.3 (5.28) | 25.9 (5.07) | 28.8 (5.06) | 0.006 | <0.0001 | 0.0008 |
| Motor | 21.6 (4.33) | 20.7 (4.34) | 22.4 (3.42) | 25.3 (4.94) | 0.008 | <0.0001 | 0.004 |
|
SENSATION
SEEKING c |
3.68 (1.99) | 3.10 (1.95) | 4.44 (1.67) | 4.83 (2.01) | 0.772 | 0.016 | 0.0004 |
| AGGRESSION c | |||||||
| Physical | 19.7 (7.45) | 17.8 (6.45) | 21.3 (7.38) | 26.9 (8.85) | 0.007 | <0.0001 | 0.0004 |
| Verbal | 10.9 (4.14) | 9.90 (3.59) | 11.8 (4.10) | 14.9 (4.92) | 0.007 | <0.0001 | 0.0004 |
| Anger | 15.3 (5.79) | 13.9 (5.02) | 16.5 (5.74) | 20.9 (6.88) | 0.007 | <0.0001 | 0.0004 |
| Hostility | 17.5 (6.62) | 15.8 (5.74) | 18.9 (6.56) | 23.9 (7.86) | 0.007 | <0.0001 | 0.0004 |
|
INTERNALIZING
TRAITS |
|||||||
| Perceived stress | 19.9 (6.03) | 18.7 (5.69) | 20.6 (5.71) | 25.8 (5.93) | 0.0001 | <0.0001 | 0.0008 |
| Satisfaction with Life |
23.4 (6.65) | 24.1 (6.70) | 23.1 (5.83) | 19.0 (7.60) | 0.012 | <0.0001 | 0.014 |
a
Adjusted for sex (% males: class 1=25.4%, class 2=28.1%, class 3=31.0%; p-value > 0.05)
b
Adjusted for sex and age at initiation of alcohol use
c
Adjusted for sex, age at initiation of alcohol use and binge drinking