Table 5.
Substance use at least once in the last month by questionnaire score*.
| Variable | p-value | p-value | |||||||
|---|---|---|---|---|---|---|---|---|---|
| <5 | >5 | <10 | >10 | Low | High | ||||
| Tobacco | 14 (14) | 42 (21) | 0.1187 | 26 (16) | 60 (20) | 0.3807 | 88 (18) | 15 (28) | 0.1052 |
| Alcohol | 77 (79) | 145 (77) | 0.7639 | 123 (78) | 226 (78) | 0.9055 | 357 (78) | 45 (86) | 0.2079 |
| Binge drink | 30 (29) | 79 (40) | 0.0757 | 50 (31) | 121 (40) | 0.0682 | 176 (37) | 21 (40) | 0.7662 |
| Energy drinks | 18 (17) | 72 (37) | 0.002** | 42 (26) | 101 (34) | 0.0730 | 142 (30) | 24 (47) | 0.0260 |
| Marihuana | 6 (6) | 21 (11) | 0.2046 | 16 (10) | 28 (9) | 0.8691 | 41 (9) | 11 (21) | 0.0112 |
| Cocaine | - | 2 (1) | 0.5461 | - | 2 (1) | 0.5432 | 4 (1) | - | 0.9999 |
| Stimulants+ | - | 6 (3) | 0.964 | 3 (2) | 8 (3) | 0.7542 | 10 (2) | 2 (4) | 0.3344 |
| Tranquilizers+ | - | 4 (2) | 0.3022 | 3 (2) | 6 (2) | 0.9999 | 11 (2) | - | 0.6136 |
*
Values were calculated on available questionnaires for both variables.
**
Significant after Bonferroni's correction
+
Stimulants includes Methylphenidate - Ritalin, Methamphetamine - "Meth"; Tranquilizers includes Diazepam, Lorazepam, Alprazolam, Clonazepam, etc.
Abbreviations: PSQI Pittsburgh Sleep Quality Index; ESS Epworth Sleepiness Scale; BQ Berlin Questionnaire; ND No data.