[R-meta] Error Stopped because k = 0 after sub setting​.

[Klaow sota]

Thank you so much for all supporting.

Best,
Klaow

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________________________________
From: Dr. Gerta Rücker <ruecker using imbi.uni-freiburg.de>
Sent: Sunday, September 18, 2022 12:15:14 AM
To: Klaow sota <jija_99 using hotmail.com>; Michael Dewey <lists using dewey.myzen.co.uk>; r-sig-meta-analysis using r-project.org <r-sig-meta-analysis using r-project.org>
Subject: Re: [R-meta] Error Stopped because k = 0 after sub setting​.


Dear Klaow,


You now that R is case-sensitive? That is, see the following:


# Set

interven <- "pzq"

# Then

interven=="pzq" # provides
[1] TRUE

# However,

interven=="PZQ" # provides
[1] FALSE


That is, you have to spell the values in the code exactly as spelled in the data set.


Best,

Gerta



Am 17.09.2022 um 17:06 schrieb Klaow sota:
I apologize for the messy data from the previous email.
The screenshot photo might be better, I attached.
I curious that yi/vi probably get problem and made the error happened.

Best,
Klaow



________________________________
From: Michael Dewey <lists using dewey.myzen.co.uk><mailto:lists using dewey.myzen.co.uk>
Sent: Saturday, September 17, 2022 7:26 PM
To: Klaow sota <jija_99 using hotmail.com><mailto:jija_99 using hotmail.com>; r-sig-meta-analysis using r-project.org<mailto:r-sig-meta-analysis using r-project.org> <r-sig-meta-analysis using r-project.org><mailto:r-sig-meta-analysis using r-project.org>
Subject: Re: [R-meta] Error Stopped because k = 0 after sub setting​.

Dear Klaow

Without your data it is hard to be sure. I assume you have checked that
the variable interven does indeed contain some values "PZQ"?

Michael

On 17/09/2022 11:44, Klaow sota wrote:
> I have some problems with analysis in subgroup
> It showed this message:
>   > # fit random-effects model in the three subgroups
>> res.s <- rma(yi, vi, subset=(interven=="PZQ"),data=dat)
> Error: Stopped because k = 0 after sub setting​.
>
> How should I fix it?
> Is it caused from vi, yi?
>
> Best regards,
> Klaow
>
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>
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--
Michael
http://www.dewey.myzen.co.uk/home.html



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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<mailto:ruecker using imbi.uni-freiburg.de>
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