NurseKim_ATL said:Propensity score matching studies and the trial evidence: when RCTs aren't available for a specific question, propensity score-matched observational…
Mine went the same way, slower. The detail I would add is minor and it is already implied above.
hank_denver said:Practical: whatever you change, write down the date and the reason.
There is a second half to this that has not been said yet. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.
One concrete data point for the thread. Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a trend.
If somebody has the primary source to hand I would rather cite it than paraphrase it.
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View ResultsA narrower follow-up, since the general answer is now clear:
How would you tell the difference between that and the alternative explanation?
Moderator note: the sourcing question belongs in the vendor section and has been split out.