Background
Although several studies have found a high incidence of coexisting mental health problems among adolescents with substance use problems, follow-up studies addressing how these conditions change over time are rare. The study will describe and analyse indications of mental health problems and how various risk factors predict outcomes 1 year after initial treatment contact. In addition, gender-specific risk factors are explored.
Methods
A clinical sample of 455 adolescents (29% girls, median age 17 years) answered a structural interview at baseline and were followed up using...