[R-meta] measurement conversion is possible ?

[Gerta Ruecker]

Dear Martin,

There is some literature on this problem, see for example 
https://bmcmedresmethodol.biomedcentral.com/articles/10.1186/1471-2288-14-135

Best,

Gerta

Am 07.11.2019 um 15:27 schrieb Martin Lobo:
> Hi everyones
> Several times it happens that we do not have the measure we need or its dispersion.
>
> for example:
> median (inter quartile range)
> median (confidence interval)
> or we have mean (standard deviation) pre test and post test, but we don't have the standard deviation of the difference.
> Is there any way with this data to estimate the mean and standard deviation without too much error (or that it is accepted methodologically)?
>
> Thank you
>
>
>
>
> Lorenzo Mart�n Lobo MTSAC, FACC, FESC
> Especialista Jerarquizado en Cardiolog�a
> 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
> 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
>
>
> Instructor de ACLS de la American Heart Association
>
>
> ________________________________
> e la American Heart Association
>
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-- 

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

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

Stefan-Meier-Str. 26, D-79104 Freiburg, Germany

Phone:    +49/761/203-6673
Fax:      +49/761/203-6680
Mail:     ruecker using imbi.uni-freiburg.de
Homepage: https://www.imbi.uni-freiburg.de/persons/ruecker/person_view


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