Hard drugs use ≥ 12 months Subjective · primary or secondary school pupils
Combined programmes showed no clear difference in hard drugs use ≥12 months Subjective compared with usual curricula (high certainty).
1 finding from 1 review
Any drug use < 12 months Subjective · primary or secondary school pupils
Combined programmes leads to lower any drugs use < 12 months Subjective compared with usual curricula (high certainty).
1 finding from 1 review
Marijuana use ≥ 12 months Subjective · primary or secondary school pupils
Social competence showed no clear difference in marijuana use ≥ 12 months Subjective compared with usual curricula (high certainty).
1 finding from 1 review
Hard drug use < 12 months Subjective · primary or secondary school pupils
Social competence showed no clear difference in hard drug use < 12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Hard drugs use ≥ 12 months Subjective · primary or secondary school pupils
1 finding from 1 review
Any drug use < 12 months Subjective · primary or secondary school pupils
Social competence probably leads to lower any drug use < 12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Marijuana use < 12 months Subjective · primary or secondary school pupils
Social influence showed no clear difference in marijuana use < 12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Marijuana use ≥ 12 months Subjective · primary or secondary school pupils
Social influence showed no clear difference in marijuana use ≥ 12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Marijuana use < 12 months Subjective · primary or secondary school pupils
Combined programmes showed no clear difference in marijuana use < 12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Marijuana use ≥ 12 months Subjective · primary or secondary school pupils
Combined programmes probably leads to lower marijuana use ≥12 months Subjective compared with usual curricula (moderate certainty).
1 finding from 1 review
Intervention not reported
Knowledge [questionnaire (scored out of 80), measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The intervention may leads to lower knowledge [questionnaire (scored out of 80), measured immediately… (low certainty).
1 finding from 1 review
Intervention not reported
Knowledge [scored correct answer to single question, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The intervention showed no clear difference in knowledge [scored correct answer to single question, measured… (low certainty).
1 finding from 1 review
Intervention not reported
Satisfaction with the information provided [single question, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The intervention may leads to higher satisfaction with the information provided [single question,… (low certainty).
1 finding from 1 review
Intervention not reported
Rate of participation [case notes, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The intervention showed no clear difference in rate of participation [case notes, measured immediately… (low certainty).
1 finding from 1 review
Intervention not reported
Anxiety, or other psychological distress · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Intervention not reported
Retention of knowledge · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Intervention not reported
Satisfaction with the decision‐making process · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Intervention not reported
Seizure frequency > 50% seizure reduction · people with conversion/dissociative/hysterical seizures
1 finding from 1 review
Failure to respond at endpoint (6‐12 weeks) · patients with depression
Paroxetine showed no clear difference in failure to respond at endpoint (6‐12 weeks) compared with hypericum (moderate certainty).
1 finding from 1 review
Failure to respond at 1‐4 weeks · patients with depression
1 finding from 1 review