Cochrane · systematic review · CD003974
Placebo interventions for all clinical conditions
Hróbjartsson, A, Gøtzsche, PC · Cochrane Database of Systematic Reviews · 2010 · Cochrane Library
Consumers and CommunicationAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
6
current version
GRADE rated
6
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 1 · 16.7%Moderate 5 · 83.3%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Effect of placebo interventions across all clinical conditions (main findings)
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
All clinical conditions (binary outcomes) | no estimate extracted | 44 studies · 6041 participants | Moderate |
All clinical conditions (continuous outcomes) | no estimate extracted | 158 studies · 10525 participants | Moderate |
Pain [2] (continuous outcomes) | no estimate extracted | 60 studies · 4154 participants | Moderate |
Nausea [2] (continuous outcomes) Â | no estimate extracted | 7 studies · 452 participants | Moderate |
Depression [2] (continuous outcomes) | no estimate extracted | 8 studies · 324 participants | Moderate |
Other outcomes [2] (continuous outcomes) Smoking, dementia, obesity, hypertension, insomnia, anxiety, asthma, phobia) | no estimate extracted | 41 studies · 1317 participants | Low |