[R-meta] lineal regression test: significan p < 0.05 or < 0.1 ?

[Dr. Gerta Rücker]

Dear Martin,

To be clear: Which tests? I know test situations where we use alpha = 
0.1 instead of 0.05 (for example, funnel plot tests). This is sometimes 
done in situations where the test is thought as a pre-test before 
another test or analysis is done (which is also controversial). What is 
your null hypothesis? Do you want to test whether a distribution is skewed?

And further: alpha is the probability of a type 1 error. Thus, if one 
uses alpha = 0.1, one does not reduce type 1 error compared to the usual 
0.05. Rather, one takes a *larger* type 1 error into account, usually to 
increase power.

Best,

Gerta

Am 23.09.2021 um 15:39 schrieb Martin Lobo:
> Hello,
> I have generally seen that a p <0.1 should be used to consider skewness in these tests. Is this so? Is this to reduce type I error?
> Thank you
>
>
>
>
> Lorenzo Mart�n Lobo MTSAC, FACC, FESC
> Especialista Jerarquizado en Cardiolog�a
> Jefe de Dpto Enf. Cardiovasculares y Cardiometabolismo Hospital Militar Campo de Mayo.
> Jefe de Cardiolog�a Hospital Militar Campo de Mayo
> Ex Jefe de Unidad Coronaria Hospital Militar Campo de Mayo
> Miembro Titular de la Sociedad Argentina de Cardiolog�a
> Fellow American College of Cardiology
> Fellow European Society of Cardiology
> Ex Miembro del Area de Investigaci�n de la SAC
> Ex Director del Consejo de Aterosclerosis y Trombosis de la SAC
> Miembro Asesor del Consejo de Aterosclerosis y Trombosis de la SAC
> Ex Director del Consejo de Epidemiolog�a y Prevenci�n Cardiovascular de la SAC
>
> Miembro Asesor del Consejo de Epidemiolog�a y Prevenci�n Cardiovascular de la SAC
>
>
> Experto en Lipidos de la Sociedad Argentina de Lipidos.
> Miembro de la Sociedad Argentina de Lipidos.
> Instructor de ACLS de la American Heart Association
>
>
>
>
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-- 

Dr. rer. nat. Gerta Rücker, Dipl.-Math.

Guest Scientist
Institute of Medical Biometry and Statistics,
Faculty of Medicine and Medical Center - University of Freiburg

Zinkmattenstr. 6a, D-79108 Freiburg, Germany

Mail:     ruecker using imbi.uni-freiburg.de
Homepage: https://www.uniklinik-freiburg.de/imbi-en/employees.html?imbiuser=ruecker


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