Adding the clinical framing, because it changes how the question reads. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.

CarlaRPh_TPA said:

Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent…

Mine went the same way, slower.

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful.

Adding the numbers, since they settle part of this. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.

One thing that is still open after CarlaRPh_TPA’s answer:

What would you measure differently if you were starting again?