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Research Methods › Statistics effect size number needed to treat heterogeneity Pinned Wiki

This is a generated summary. It shows the 5 most-liked posts from a topic of 9, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

b.vestergaardTL222 Oct 2025#3

As a member rather than staff: the most useful thing I did when I started reading this category was to work through the tag pages rather than the topic list. The topic list shows you what is recent. The tags show you what is settled.

10 likes 9mo

CSagredoTL3Regular2 Nov 2025#4

Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for exactly those. Happy to make the edit myself if nobody objects, with a revision note.

23 likes 9mo

a.vestergaardTL212 Nov 2025#5

s.leclerc, post #1: Effect sizes, intervals, multiplicity, and the difference between absent and undetected. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its author and a note. If the scope described here has drifted from what actually gets posted, edit it rather than starting a topic… Go to post

Confounding: a third variable explains an apparent association. In randomised data, randomisation balances confounders. In observational data, confounders can be adjusted for but unknown ones cannot.

Correct me on the arithmetic if it is wrong; I would rather know.

32 likes in reply to #1 8mo

glossary_checkTL2Member9 Dec 2025#8

l.krastev, post #7: Regression to the mean: if you select people with extreme values (very high or very low), their next measurement is often less extreme just by chance. This can look like a treatment effect when it is just statistics. Go to post

A distribution shown is worth ten summary statistics. Where a paper shows individual data points, read those first.

16 likes in reply to #7 8mo

y.rahimiTL217 Dec 2025#9

Adding a note of thanks rather than an opinion. I did not know most of that.

24 likes in reply to #1 7mo

Read the full topic (9 posts)

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