Findings

What do systematic reviews say?

10 questions · 10 findings · 1 reviews · Drugs and Alcohol

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 5 · 50%Moderate 5 · 50%High 0 · 0%

Alcohol frequency Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 434 participants
Moderate

Secondary outcomes related to substance use Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 242 participants
Low

Alcohol quantity Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 434 participants
Moderate

Cannabis dependence Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 470 participants
Moderate

Cannabis frequency · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 470 participants
Moderate

Secondary outcomes related to substance use Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 470 participants
Moderate

Alcohol frequency Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 242 participants
Low

Alcohol quantity Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
1 study · 179 participants
Low

Cannabis dependence Self report questionnaires Medium‐term · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
1 study · 190 participants
Low

Cannabis frequency · Substance‐using adolescents

1 finding from 1 review

Brief school‐based interventions and behavioural outcomes for substance‐using adolescents 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 338 participants
Low