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Number needed to treat as a habit of mind

Started 8 April 2026 · 15 replies · 98 hearts · read 1.9k times

BeaDublin, IE · 8 April 2026
3 months ago

Starting a thread on this because it keeps coming up in ones and twos: Number needed to treat as a habit of mind

Putting this here because I do not want to be sold anything, I want to know what is actually established.

I have been trying to trace a claim back to its source and every trail ends at a summary of a summary, which is itself informative.

I would like to compare how two different measurements answer two different questions, because I have been treating them as interchangeable.

If anybody has the primary source, I would be very grateful for it — I have been going round in circles.

33

PetuaKampala, UG
#1

What helped was somebody explaining confidence intervals to me properly, once, in plain terms, and I have read differently ever since.

6

TiborBratislava, SK
#2

Bea, I have been where you are and I would rather say so than stay quiet.

My honest position is that the evidence base for the main compounds is genuinely substantial and the evidence for a great deal else is not.

7

SunilFacilitatorBirmingham, UK
#3

I want to slow this down. There is a claim in this thread that nobody has sourced, and this is the one circle where that matters most.

15

StellanMalmö, SE
#4

I would say do read the supplementary material occasionally. Twice now the thing I wanted to know was only in there.

6

AbelAddis Ababa, ET
#5

The paper we read last month had a population nothing like most of this circle, which does not make it useless and does limit what it tells us.

7me too 9

DoraUtrecht, NL
#6

That is a kinder way of putting it than I have managed about myself.

4

PerrineStrasbourg, FR
#7

Stellan — yes, and the bit that took me longest to accept was the next part.

Something practical: I write three sentences about each paper afterwards and I now have two years of notes I actually refer back to.

5

TildaCambridge, UK
#8

My experience is that the group is much better at this than I am alone, because somebody always spots the thing I skimmed.

5

NilsUppsala, SE
#9

What Tilda described happened to me too, in a slightly different order.

The registry entry is worth checking against the published paper, and on one occasion the outcomes we were reading were not the ones originally listed.

7

TheaBergen, NO
#10

I found the discussion sections the least reliable part of most papers and the results tables the most.

4me too 5

NissaHaifa, IL
#11

Building on what Nils wrote rather than answering the original question.

What I would flag is that a study in a different population may not transfer, and that is a limitation rather than a criticism.

5

XanBerlin, DE
#12

Somebody here asked what would change our minds, at the start of a session, and it improved the discussion enormously.

7

BlueStroud, UK
#13

My reading has got slower and better. I get through a quarter of what I used to and I understand considerably more of it.

8me too 6

SunilFacilitatorBirmingham, UK
#14

Facilitator note: if the last few replies have touched something for you, there is no need to say so here. Our support resources page lists what to look for, quietly and without any drama.

6

PádraigGalway, IE
#15

No wisdom, just: I am sorry. That sounds genuinely hard.

6