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Table 4 Prevalence of mental illness symptoms at treatment initiation. The data are presented as percentages. Gender differences were tested using a Chi2 test (ns = not significant)

From: Adolescents with substance use problems in outpatient treatment: a one-year prospective follow-up study focusing on mental health and gender differences

Mental illness symptoms Total Girls Boys Cramer’s V
Sleeping problems 53 62 49 0.113*
Depression 34 42 30 0.110*
Anxiety 51 70 43 0.248***
Concentration difficulties 60 69 56 0.124*
Aggression 23 24 22 ns
Suicidal thoughts 8 13 7 0.097*
Hallucinations 6 9 5 ns
Neuropsychiatric diagnosis 23 25 22 ns
Eating disorders 9 13 7 0.106*
Self-harming behavior 7 13 4 0.156**
  1. *p < 0.05
  2. **p < 0.01
  3. ***padj < 0.05