Old thread, but it comes up first when you search for this, so it is worth updating. 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.
Dr.NateNeph said:Say what you would expect to see if you were wrong, before you look.
Agreed, and one caution: a single measurement is not a measurement. Anything that moves day to day needs a trend before it means anything at all.
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Shop Reference StandardsDr.NateNeph said:Say what you would expect to see if you were wrong, before you look.
Thank you — that is the clearest version of this I have read, and I have read a lot of them. Printing the relevant bit and taking it with me.
From the other side of the consultation, briefly. 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.