Table 2 Health risk behaviors among the university sample (n = 1038)
|  | Total sample | Cluster 1 ‘Lower risk’ | Cluster 2 ‘Smokers and drinkers’ | Cluster 3 ‘Binge-drinkers and marijuana users’ | Cluster 4 ‘Smokers and binge-drinkers’ |
|---|---|---|---|---|---|
Cluster prevalence | n | n (%) | n (%) | n (%) | n (%) |
 T0 | 1038 | 677 (65.2) | 16 (1.5) | 287 (27.6) | 58 (5.6) |
 T1 | 1038 | 814 (78.4) | 13 (1.3) | 157 (15.1) | 53 (5.1) |
 T2 | 430 | 830 (80.0) | 4 (0.01) | 144 (13.9) | 60 (5.8) |
Mean and standard errors (S.E) | Mean (S.E) | Mean (S.E) | Mean (S.E) | Mean (S.E) | Mean (S.E) |
 Cigarettes smoked per day | 0.56 (1.76) | 0.04 (0.01) | 10.60 (0.37) | 0.28 (0.05) | 4.44 (0.13) |
 Total weekly number of alcoholic drinks | 2.55 (3.49) | 1.12 (0.08) | 6.43 (1.52) | 5.36 (0.70) | 4.46 (0.54) |
 Total weekly score of unhealthy food consumption | 8.89 (5.87) | 8.82 (0.19) | 8.92 (1.33) | 10.04 (0.41) | 9.87 (0.74) |
Item response probabilities (IRP) and standard errors (S.E) | (%) | IRP (S.E) | IRP (S.E) | IRP (S.E) | IRP (S.E) |
Monthly frequency of binge drinking | |||||
 Never | 52.5 | 0.84 (0.03) | 0.50 (0.09) | 0.08 (0.03) | 0.39 (0.05) |
 Once | 27.6 | 0.14 (0.02) | 0.12 (0.05) | 0.39 (0.05) | 0.23 (0.04) |
 Twice | 11.4 | < 0.01(< 0.01) | 0 | 0.30 (0.03) | 0.16 (0.03) |
 3 to 5 times | 6.4 | < 0.01(< 0.01) | 0.24 (0.13) | 0.20 (0.04) | 0.17 (0.04) |
 6 to 9 times | 1.3 | 0 | 0.15 (0.11) | 0.02 (0.01) | 0.05 (0.02) |
 10 times or more | 0.3 | 0 | 0 | 0.01 (0.01) | 0 |
Marijuana use | |||||
 No | 81.6 | 0.88 (0.02) | 0.65 (0.10) | 0.44 (0.05) | 0.62 (0.05) |
 Yes | 17.9 | 0.12 (0.02) | 0.35 (0.10) | 0.56 (0.05) | 0.38 (0.05) |
Benzodiazepine use | |||||
 No | 86.3 | 0.90 (0.01) | 0.79 (0.07) | 0.80 (0.03) | 0.80 (0.04) |
 Yes | 13.2 | 0.10 (0.01) | 0.21 (0.07) | 0.20 (0.03) | 0.21 (0.04) |