Adding the clinical framing, because it changes how the question reads. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.
Clinical perspective, offered as context rather than as advice. 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.
Dr.ObesityLA said: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…
Second this. I had assumed I was the exception until I read this.
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Shop Reference StandardsDr.ObesityLA said: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…
Adding the part of the answer the thread has not reached. There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.