Dr.NephBHM_UK said:The version of this that has an answer is narrower than the version being asked.
Coming at Dr.NephBHM_UK’s question from a different direction. 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.
The figures, for anyone assembling their own picture. If you are going to change something, change one thing and give it long enough to express itself. Four weeks is the usual minimum for anything pharmacological on this board, and two weeks of data has told you almost nothing.
A narrower follow-up, since the general answer is now clear:
What would you measure differently if you were starting again?
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Browse GL BiochemBiostatsBrad said:If you are going to change something, change one thing and give it long enough to express itself.
I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.
If somebody has the primary source to hand I would rather cite it than paraphrase it.
BiostatsBrad said:If you are going to change something, change one thing and give it long enough to express itself.
No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.