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Evidence · Journal club · continued

Journal club: is percentage weight change the right endpoint? posts 61–90

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1 · go to the accepted answer.

TL
t.lindqvistTL212 Apr 2026 · edited#61
taper_table, post #33: The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions. Take it as a starting point and not as a specification. Go to post

Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.

2 likes in reply to #33 4mo
M
MSaarinenTL3Regular12 Apr 2026#62
s.chowdhury, post #19: The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping. That is what I would do. It may not be what is correct. Go to post

The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.

0 likes in reply to #19 4mo
IB
i.brobergTL213 Apr 2026#63

Coming back to post #61, because the follow-up matters more than the original answer.

SURMOUNT-1 (N Engl J Med 2022): Tirzepatide obesity trial. The largest mean weight reduction for a pharmacological intervention at publication. Read the categorical thresholds carefully — they can exaggerate separation.

Not the whole picture, but the part of it I can speak to.

27 likes 3mo
JD
j.delacroixTL3Regular13 Apr 2026#64

Post #61 is right about the mechanism and I think understates the practical bit.

The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.

That matches what I was told, which is not the same as knowing it.

13 likes 3mo
MM
m.malinowskiTL213 Apr 2026#65
VThorvaldsen, post #28: The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions. Caveat: everything above assumes the paperwork is what it says it is. Go to post

That is consistent with mine, for whatever one more account is worth.

0 likes in reply to #28 3mo
HM
h.mukherjeeTL114 Apr 2026#66
AA
a.almeidaTL214 Apr 2026#67

Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything that follows.

19 likes 3mo
PS
p.silvaTL214 Apr 2026#68

Confirming post #67 from a second method, which matters more than confirming it from a second person.

Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is more honest and more useful later.

The part I am sure of is shorter than the part I have written.

8 likes 3mo
KR
k.roosTL215 Apr 2026#69

Post #67 describes the usual case. This is about the unusual one.

Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.

That is where I would start, not where I would stop.

0 likes 3mo
AW
a.weissTL215 Apr 2026#70
t.abubakar, post #36: Post #35 put the caveat in the right place and I want to underline it. Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is more honest and more useful later. Go to post

Adding the measurement that post #69 says would settle it.

The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping.

This is the version I would want a new member to read first.

28 likes in reply to #36 3mo
SC
s.coelhoTL215 Apr 2026#71

The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.

I would hold that lightly until someone with a larger sample weighs in.

0 likes 3mo
JM
j.mwangiTL4 Moderator16 Apr 2026#72

Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything that follows.

Two sources, same conclusion, and I could not rule out that one copied the other.

2 likes 3mo
JS
j.sorensenTL216 Apr 2026#73
l.salinas, post #16: Good question, well framed, and I would like to see it answered properly. Go to post

The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.

9 likes in reply to #16 3mo
JC
j.castellanosTL216 Apr 2026#74
VS
v.salgadoTL217 Apr 2026 · edited#75

The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.

0 likes 3mo
LC
lu.cabreraTL217 Apr 2026#76

SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two parallel trials addressed the confounder directly.

1 like 3mo
CV
c.vermeulenTL217 Apr 2026#77

Post #76 is the version of this I will quote in future. One addition.

The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping.

6 likes 3mo
MS
m.silvaTL218 Apr 2026#78

Where I part company with post #75, and it is a narrow parting.

Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.

That is the practical version. The rigorous version is longer and says the same thing.

15 likes 3mo
G
GDashwoodTL3Regular18 Apr 2026#79
t.abubakar, post #36: Post #35 put the caveat in the right place and I want to underline it. Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is more honest and more useful later. Go to post

Narrowing post #76, because the general version has more than one answer.

Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything that follows.

30 likes in reply to #36 3mo
LF
l.ferreiraTL218 Apr 2026#80

Everything in post #78 holds. The case it does not cover is the one I have.

The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.

Two people can read the same figure differently here and both be reasonable.

0 likes 3mo
SO
se.okaforTL218 Apr 2026 · edited#81

Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is more honest and more useful later.

I am not the right person to answer the follow-up to this.

1 like 3mo
SB
sharps_binTL2Regular19 Apr 2026#82
cannula_trace, post #51: STEP 1 (N Engl J Med 2021): The pivotal obesity trial for semaglutide and the reference point for most subsequent comparison. Mean weight reduction was substantially larger than anything previously achieved pharmacologically. Happy to be the one who is wrong here if it settles the question. Go to post

The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping.

That is the version I use. It may not be the version that is correct.

0 likes in reply to #51 3mo
IB
i.boatengTL219 Apr 2026#83

I read post #79 twice before replying, because I had assumed the opposite.

Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.

17 likes 3mo
TD
titration_diaryTL3Regular19 Apr 2026#84

The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.

I would not lead a decision with this, but I would not ignore it either.

7 likes 3mo
HF
h.falkTL220 Apr 2026#85

Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything that follows.

If the premise is wrong, everything after it is decoration.

0 likes 3mo
EF
e.ferreiraTL3Regular20 Apr 2026#86
KForsberg, post #45: On post #43 — agreed on the reasoning, with one qualification. Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend. I have written this out at length because the short version keeps being misread. Go to post

The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.

That has held every time I have looked, which is not the same as always.

0 likes in reply to #45 3mo
BK
b.kowalskiTL220 Apr 2026#87
n.torrence, post #26: Confirming post #23 from a second method, which matters more than confirming it from a second person. SURMOUNT-1 (N Engl J Med 2022): Tirzepatide obesity trial. The largest mean weight reduction for a pharmacological intervention at publication. Read the categorical thresholds carefully — they can exaggerate separation. Go to post

Thank you — that answers what I came here to find out.

12 likes in reply to #26 3mo
DB
dr_bhattacharyaTL3Physician21 Apr 2026#88

Narrowing post #86, because the general version has more than one answer.

The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping.

4 likes 3mo
RE
r.erdoganTL221 Apr 2026#89
i.wojcik, post #6: The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping. Go to post

Post #88 put the caveat in the right place and I want to underline it.

Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is more honest and more useful later.

0 likes in reply to #6 3mo
LG
lc_gradientTL3Analytical chemist21 Apr 2026#90

Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.

25 likes 3mo