Table 2.
Logistic regression models of use of alcohol and illicit drugs as risk factor for mental health problems
| ASRS inattention OR (95% CI) |
ASRS hyperactivity OR (95% CI) |
SMFQ OR (95% CI) |
SCARED OR (95% CI) |
|
|---|---|---|---|---|
| Ever consumed alcohol | ||||
| Crude | 2.36 (1.90 to 2.93) | 2.08 (1.68 to 2.58) | 1.73 (1.43 to 2.09) | 1.13 (0.94 to 1.37) |
| Adjusted for age and gender | 2.21 (1.77 to 2.76) | 2.07 (1.66 to 2.58) | 1.64 (1.35 to 1.99) | 1.03 (0.84 to 1.25) |
| Adjusted for age, gender and socioeconomic status (SES) | 2.15 (1.72 to 2.69) | 2.03 (1.62 to 2.53) | 1.59 (1.31 to 1.93) | 0.99 (0.81 to 1.21) |
| Ever tried illicit drugs | ||||
| Crude | 2.38 (1.98 to 2.87) | 2.26 (1.86 to 2.74) | 1.69 (1.39 to 2.05) | 1.33 (1.05 to 1.68) |
| Adjusted for age and gender | 2.49 (2.06 to 3.02) | 2.36 (1.94 to 2.89) | 1.98 (1.62 to 2.42) | 1.55 (1.23 to 1.98) |
| Adjusted for age, gender and SES | 2.42 (2.00 to 2.93) | 2.31 (1.90 to 2.82) | 1.91 (1.56 to 2.34) | 1.50 (1.18 to 1.91) |
| 90th centile alcohol consumption* | ||||
| Crude | 1.97 (1.55 to 2.51) | 2.70 (2.14 to 3.40) | 2.19 (1.74 to 2.75) | 1.61 (1.21 to 2.14) |
| Adjusted for age and gender | 1.96 (1.54 to 2.50) | 2.76 (2.19 to 3.48) | 2.27 (1.79 to 2.88) | 1.64 (1.22 to 2.19) |
| Adjusted for age, gender and SES | 1.98 (1.55 to 2.53) | 2.77 (2.19 to 3.49) | 2.29 (1.80 to 2.90) | 1.64 (1.22 to 2.20) |
| Intoxication >10 times† | ||||
| Crude | 1.83 (1.56 to 2.15) | 2.08 (1.77 to 2.45) | 1.30 (1.10 to 1.52) | 0.95 (0.78 to 1.16) |
| Adjusted for age and gender | 1.80 (1.52 to 2.12) | 2.18 (1.84 to 2.59) | 1.36 (1.15 to 1.61) | 0.97 (0.79 to 1.20) |
| Adjusted for age, gender and SES | 1.80 (1.52 to 2.13) | 2.17 (1.83 to 2.58) | 1.35 (1.14 to 1.61) | 0.96 (0.78 to 1.18) |
| CRAFFT-positive (≥2) | ||||
| Crude | 3.15 (2.71 to 3.66) | 3.24 (2.78 to 3.78) | 2.84 (2.46 to 3.28) | 1.68 (1.42 to 1.99) |
| Adjusted for age and gender | 3.06 (2.63 to 3.56) | 3.22 (2.76 to 3.77) | 2.84 (2.45 to 3.29) | 1.62 (1.38 to 1.94) |
| Adjusted for age, gender and SES | 3.01 (2.59 to 3.51) | 3.18 (2.72 to 3.71) | 2.80 (2.41 to 3.25) | 1.59 (1.34 to 1.90) |
Mental health variables analysed separately. N=9203 (girls n=4995, boys n=4208).
Significant associations in italic.
95 CIs in parentheses.
CRAFFT: screening tool for identification of problematic alcohol and drug use among adolescents.
ASRS: Adult attention-deficit-hyperactivity disorder (ADHD) Self-report Scale, screening inventory for ADHD. ASRS inattention: the inattention subscale of the ASRS (9 items). ASRS hyperactivity: the hyperactivity-impulsivity subscale of the ASRS (nine items).
SMFQ: the short version of the Mood and Feelings Questionnaire, screening inventory for symptoms of depression and depressive disorders.
SCARED: five-item screening inventory for symptoms of anxiety and anxiety disorders.
*Only includes those who have tried alcohol (n=7031).
†Only includes those with valid response on frequency of intoxication (n=9056).