Intervention not reported
Frequency of alcohol consumption · young people aged up to 25 years
The intervention showed no clear difference in frequency of alcohol consumption (low certainty).
1 finding from 1 review
Intervention not reported
Binge drinking · young people aged up to 25 years
The intervention showed no clear difference in binge drinking (low certainty).
1 finding from 1 review
Intervention not reported
Alcohol problems · young people aged up to 25 years
The intervention showed no clear difference in alcohol problems (moderate certainty).
1 finding from 1 review
Intervention not reported
Average BAC · young people aged up to 25 years
The intervention showed no clear difference in average BAC (moderate certainty).
1 finding from 1 review
Intervention not reported
Peak BAC · young people aged up to 25 years
The intervention showed no clear difference in peak BAC (moderate certainty).
1 finding from 1 review
Intervention not reported
Drink‐driving · young people aged up to 25 years
The intervention showed no clear difference in drink‐driving (moderate certainty).
1 finding from 1 review
Intervention not reported
Risky behaviour · young people aged up to 25 years
The intervention showed no clear difference in risky behaviour (moderate certainty).
1 finding from 1 review
Intervention not reported
Frequency of alcohol consumption · young adults aged up to 25 years
The intervention showed no clear difference in frequency of alcohol consumption (moderate certainty).
1 finding from 1 review
Intervention not reported
Binge drinking · young adults aged up to 25 years
The intervention showed no clear difference in binge drinking (moderate certainty).
1 finding from 1 review
Intervention not reported
Alcohol problems · young adults aged up to 25 years
The intervention showed no clear difference in alcohol problems (low certainty).
1 finding from 1 review
Intervention not reported
Average BAC · young adults aged up to 25 years
The intervention showed no clear difference in average BAC (moderate certainty).
1 finding from 1 review
Intervention not reported
Peak BAC · young adults aged up to 25 years
The intervention showed no clear difference in peak BAC (moderate certainty).
1 finding from 1 review
Intervention not reported
Drink‐driving · young adults aged up to 25 years
The intervention showed no clear difference in drink‐driving (moderate certainty).
1 finding from 1 review
Intervention not reported
Risky behaviour · young adults aged up to 25 years
The intervention showed no clear difference in risky behaviour (moderate certainty).
1 finding from 1 review
Intervention not reported
Quantity of alcohol consumed · young people aged up to 25 years
The intervention showed no clear difference in quantity of alcohol consumed (low certainty).
1 finding from 1 review
Intervention not reported
Cocaine use assessed by the mean (SD) proportion of cocaine‐free urinalysis across the study per participant · people with cocaine dependence
1 finding from 1 review
Intervention not reported
Sustained cocaine abstinence · people with cocaine dependence
It is very uncertain whether the intervention changes sustained cocaine abstinence (very low certainty).
1 finding from 1 review
Intervention not reported
Number of participants who finished the study · people with cocaine dependence
The intervention showed no clear difference in number of participants who finished the study (moderate certainty).
1 finding from 1 review
Alcohol frequency Self report questionnaires Medium‐term · Substance‐using adolescents
1 finding from 1 review
Secondary outcomes related to substance use Self report questionnaires Medium‐term · Substance‐using adolescents
1 finding from 1 review