"Observed Power" and other "Power" Issues

[f2harrell]

@ADAlthousePhD

I do appreciate those concerns. In the stuck-between-rock-and-hard place that Tim (and others, including myself) may find ourselves in - a paper returned with a reviewer comment that wishes to dismiss a finding of “no relationship” by stating “your study must be underpowered, please include a post-hoc power calculation” - do you consider the approach suggested above at all reasonable?

Yes I do find it reasonable, especially if you footnote it with a caveat or two. Even better would be to stick with a compatibility interval.