> Right, a metastudy where one of the stipulations is:
>"We excluded ... trials that ... included 20% or more of participants with ... treatment-resistant depression"
That seems reasonable, as long as 20% isn't the baseline level of "treatment-resistant depression". If you're going to do a search for all anti-depressants studies, you're bound to turn up some studies that are researching-treatment resistant depression. If you're trying to study how anti-depressants behave typically, it makes sense to exclude the extreme examples, just like if you're trying to study whether an anti-cancer medication works you want to exclude the cases where the patient was on his deathbed.
>"We excluded ... trials that ... included 20% or more of participants with ... treatment-resistant depression"
That seems reasonable, as long as 20% isn't the baseline level of "treatment-resistant depression". If you're going to do a search for all anti-depressants studies, you're bound to turn up some studies that are researching-treatment resistant depression. If you're trying to study how anti-depressants behave typically, it makes sense to exclude the extreme examples, just like if you're trying to study whether an anti-cancer medication works you want to exclude the cases where the patient was on his deathbed.