Findings

What do systematic reviews say?

313 questions · 352 findings · 23 reviews · Drugs and Alcohol · Headline outcomes only

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No studies found 16 · 4.5%GRADE not reported 34 · 9.7%Very low 113 · 32.1%Low 117 · 33.2%Moderate 57 · 16.2%High 15 · 4.3%

Family/parent and adolescent interventions vs adolescent only interventions

Alcohol use prevalence Up to 4 years post intervention impact of family/parent interventions compared to control on the prevalence of alcohol consumption or drunkenness · parents/children

1 finding from 1 review

Family‐based prevention programmes for alcohol use in young people 2019 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 5640 participants
Very low

Family/parent and adolescent interventions vs adolescent only interventions

Alcohol frequency Self report questionnaires Medium‐term · parents/children

1 finding from 1 review

Family‐based prevention programmes for alcohol use in young people 2019 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 915 participants
Very low

Brief intervention vs no intervention or minimal intervention

Quantity of drinking (g/week) at 12 months · people with hazardous or harmful alcohol consumption as identified by a screening tool

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
34 studies · 15197 participants
Moderate

Brief intervention vs no intervention or minimal intervention

Frequency of drinking (no. binges/wk) at 12 months · people with hazardous or harmful alcohol consumption as identified by a screening tool

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
15 studies · 6946 participants
Moderate

Brief intervention vs no intervention or minimal intervention

Frequency of drinking (no. days drinking/week) at 12 months · people with hazardous or harmful alcohol consumption as identified by a screening tool

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
11 studies · 5469 participants
Moderate

Brief intervention vs no intervention or minimal intervention

Drinking Intensity · people with hazardous or harmful alcohol consumption as identified by a screening tool

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
10 studies · 3128 participants
Moderate

Brief intervention vs no intervention or minimal intervention

Adverse effects · people with hazardous or harmful alcohol consumption as identified by a screening tool

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 5 participants
Very low

Digital intervention vs no intervention or minimal intervention

Quantity of drinking (g/week) at 12 months · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
41 studies · 19241 participants
Moderate

Digital intervention vs face‐to‐face intervention

Adverse events · s

The review found no eligible studies for this question.

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Digital intervention vs no intervention or minimal intervention

Frequency of drinking (no. days drinking/week) at 12 months · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
15 studies · 10862 participants
Moderate

Digital intervention vs no intervention or minimal intervention

Binge drinking · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
15 studies · 3587 participants
Moderate

Digital intervention vs no intervention or minimal intervention

Drinking Intensity · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
15 studies · 9791 participants
Moderate

Digital intervention vs no intervention or minimal intervention

Adverse events · s

The review found no eligible studies for this question.

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Digital intervention vs face‐to‐face intervention

Quantity of drinking (g/week) at 12 months · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 390 participants
Low

Digital intervention vs face‐to‐face intervention

Frequency of drinking (no. days drinking/week) at 12 months · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
1 study · 58 participants
Low

Digital intervention vs face‐to‐face intervention

Binge drinking · s

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 206 participants
Low

Digital intervention vs face‐to‐face intervention

Drinking Intensity · s

The review found no eligible studies for this question.

1 finding from 1 review

Personalised digital interventions for reducing hazardous and harmful alcohol consumption in community‐dwelling… 2017 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Extended intervention vs brief intervention

Quantity of drinking (g/week) at 12 months · people with hazardous or harmful alcohol consumption

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 552 participants
Low

Extended intervention vs brief intervention

Frequency of binge drinking (no. binges/wk) at 12 months ‐ not measured · people with hazardous or harmful alcohol consumption

The review found no eligible studies for this question.

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Extended intervention vs brief intervention

Frequency of drinking (no. days drinking/week) at 12 months · people with hazardous or harmful alcohol consumption

1 finding from 1 review

Effectiveness of brief alcohol interventions in primary care populations 2018 · Cochrane Headline outcomes only
no estimate extracted
1 study · 147 participants
Low