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AW: st: OT: how to report statistics in (medical) journals
From
"Kaulisch, Marc" <[email protected]>
To
<[email protected]>
Subject
AW: st: OT: how to report statistics in (medical) journals
Date
Thu, 18 Nov 2010 09:35:49 +0100
Carlo, Nick, Maarten, Paul and Scott,
Thanks for these very fruitful hints and advices. They found their way into presenting the results in the manuscripts ;-)
Marc
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von Nick Cox
Gesendet: Mittwoch, 17. November 2010 15:56
An: '[email protected]'
Betreff: RE: st: OT: how to report statistics in (medical) journals
I agree very much with the general attitude here. For once, I was just answering the question.
On one detail: rank-based tests can often be thought of very fruitfully as based on estimating the probability that some A > some B and several of Roger Newson's commands have this strong flavour.
Nick
[email protected]
Seed, Paul
- --- On Tue, 16/11/10, Kaulisch, Marc wrote:
> I was asked to provide some tests for analyses in an article for a
> medical journal. <snip> Are there any guidelines for reporting
> statistics?
Nick Cox & Maarten Buis both suggest Marc looks at the journal's practice & policy. This is fine as far as it gues, but current practice is not always best practice. (Altman DG (2002) Poor Quality Medical Research. What Can Journals Do? JAMA 287 2765-2767 )
There are a number of guidelines for reporting clinical studies (CONSORT - randomised comtrolled trials, STARD - diagnostic tests, PRISMA - meta-analyses) and others.
Marc should google these.
(Altman DG, Schulz KF, Moher D, Egger M, Davidoff F, Elbourne D, Getzsche PC & Lang T (2001). The revised CONSORT statement for reporting randomized trials: explanation and elaboration. Annals of Internal Medicine 134:663-694.)
These stress producing estimates with confidence intervals as well as (and in preference to) p-values. Rank-based tests such as Wilcoxon & Kruskal-Wallis are unhelpful in that they give no such estimates. If Marc has the time, he may investigate the possibility of parametric tests, posibly after log-transformation, or dropping outliers, so that he can report meaningful estimates with confidence intervals.
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