VendorMark said:If you are going to change something, change one thing and give it long enough to express itself.
Pushing back on VendorMark here. I would resist the confidence. Half of what this board was certain about two years ago has since been quietly dropped, and nobody went back to correct the threads.
OP back with an update, since a thread like this is useless without one.
Closing this out. What actually changed my mind was the point about waiting for a trend instead of reading a single measurement, which is embarrassing in hindsight and worth saying anyway.
VendorMark said:If you are going to change something, change one thing and give it long enough to express itself.
This is exactly what I could not find anywhere else. Taking it to my next appointment.
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View ResultsClinical perspective, offered as context rather than as advice. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.
Found this through search years later and it is still the best discussion of the question, so adding one thing. Practical: whatever you change, write down the date and the reason. In three months the reason is what you will have forgotten, and the reason is what makes the record worth having.
Ask again with the specifics and you will get a better answer than this one.