bri_stats said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
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.
OP back with an update, since a thread like this is useless without one.
Closing the loop. The answer turned out to depend on the detail I had left out of the opening post, which is a lesson about how to ask rather than about the subject.
From the other side of the consultation, briefly. It is worth asking what the claim would look like if it were false. If nothing would look different, it is not a claim about the world and no amount of discussion will settle it.
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Browse GL BiochemDr.LipidDallas said:It is worth asking what the claim would look like if it were false.
Same pattern here, and in the same order.
Dr.LipidDallas said:It is worth asking what the claim would look like if it were false.
Adding the part of the answer the thread has not reached. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.