22 ms·
Because of the study design, there's no control group that would account for placebo. The placebo effect in several meta-analyses (Beecher, Haas) showed an eff
by kromem 9y ago
Because of the study design, there's no control group that would account for placebo.
The placebo effect in several meta-analyses (Beecher, Haas) showed an effect in studies of around 30%.
Coincidentally, people participating in this study felt less sick when talking a hot-cold shower by ~30%.
Without being able to discount placebo, I am highly suspect of the results of this study.
- isolli 9y agoIf participants did not know in advance they would be evaluated on the number of sick days they take, surely the placebo effect is minimal?
- aktenlage 9y agoSo, how would you make people believe they took a cold shower without it actually happening? :-)
- aisofteng 9y agoAnd what exactly would the placebo be? This isn't taking pills, it's taking showers.