Dr.PulmRoch said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
Fair, and it stops being fair at the extremes. The middle of the range is well understood; the ends are where the honest answer is that nobody knows.
Dr.PulmRoch said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
This is exactly what I could not find anywhere else. Adding it to my notes with a link back to this thread.
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.
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Shop Reference StandardsDr.EndoEP 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…
Same experience, arrived at from the opposite direction.
Closing the loop on my own question.
Update, and it is the boring outcome: nothing was wrong. The measurement I was reading had moved less than its own week-to-week variation, which somebody said upthread and I did not believe.