Bias due to a lack of blinding: a discussion

https://twitter.com/user/status/1759585340631765057

 

https://twitter.com/user/status/1759586163646460058

 

Interesting stuff given that for something like insomnia there might be legal implications surely if someone gave out incorrect advice to eg truck drivers , or worse said therapy made someone only think they had slept better than they objectively had who then was in a road traffic accident or injured themselves etc.

Surely the risk is that is what this study might be 'proving' or at least warning of could be the effect of said therapy - that it reduces accuracy in self-assessing sleep?