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Table 2 Substance use patterns and psychiatric diagnoses of young adults ages 18–25 seeking outpatient mental health treatment by hazardous drinking status

From: Hazardous drinking among young adults seeking outpatient mental health services

Variable Hazardous drinking in the prior 12 months
Total N = 487
No hazardous drinking
N = 232 (47.6 %)
≥1 days of hazardous drinking
N = 255 (52.3 %)
p value
Mean or % SD Mean or % SD
Alcohol use (%)      
 Lifetime 69.4   100   <0.0001
 Prior year 59.1   98.8   <0.0001
 Prior month 37.9   87.8   <0.0001
 Usual quantity of drinks consumed per occasion 0.9 ±1.1 3.1 ±1.9 <0.0001
 Number of days alcohol was consumed in prior 30 days 2.2 ±4.5 6.4 ±6.5 <0.0001
Tobacco use (%)      
 Lifetime 38.8   65.9   <0.0001
 Prior year 22.4   51.0   <0.0001
 Prior month 21.1   38.8   <0.0001
Marijuana use (%)      
 Lifetime 49.6   82.4   <0.0001
 Prior year 29.7   64.7   <0.0001
 Prior month 16.0   40.0   <0.0001
Psychiatric diagnoses at initial intake (%)      
 Depressive disorder 53.9   56.1   0.6261
 Anxiety disorder 42.2   44.3   0.6448
 Bipolar disorder 11.6   17.3   0.0794
 Eating disorders 14.2   11.8   0.4193
 Psychotic disorder 16.4   8.24   0.0059
 Drug use disorder (excluding tobacco and alcohol) 5.17   9.41   0.0741
 Alcohol use disorder 3.02   12.9   0.0001
 Attention deficit disorder 7.33   6.67   0.7750
 PTSD 6.47   4.31   0.2914
 Mean number of diagnoses at initial intake 2.02 ±1.1 2.36 ±1.3 0.0300
  1. Significant differences appear in italics