[R-meta] Zero event

[Klaow sota]

Thank you so much.

The example:  some case(s) are zero after treatment, then when we run for RR and effect size, it probably showed the incorrect result.

Best,
Klaow
[cid:17d4d1d2-07a2-48f6-a390-3104b6059f11]

[cid:a19e4fae-639c-466c-a1f2-bf37419afdcb]      Treatment               Control
        TB+     TB-     TB+     TB-
Study1  1       19      0       20
Study2  1       28      0       29
Study3  0       26      7       25
Study4  0       42      0       42
________________________________
From: Viechtbauer, Wolfgang (NP) <wolfgang.viechtbauer using maastrichtuniversity.nl>
Sent: Monday, September 19, 2022 6:01 PM
To: r-sig-meta-analysis using r-project.org <r-sig-meta-analysis using r-project.org>
Cc: Klaow sota <jija_99 using hotmail.com>
Subject: RE: Zero event

I am not sure I quite understand. Can you provide a reproducible example to illustrate the issue? In what sense is the result incorrect?

Best,
Wolfgang

>-----Original Message-----
>From: Klaow sota [mailto:jija_99 using hotmail.com]
>Sent: Monday, 19 September, 2022 12:57
>To: Viechtbauer, Wolfgang (NP); r-sig-meta-analysis using r-project.org
>Subject: Re: Zero event
>
>I run from the positive/negative cases to find Risk ratio. When I run the zero
>event, it affects the RR and make it incorrect result.
>Is any code that can manipulate the zero event?
>
>Thank you very much.
>
>Best,
>Klaow
>
>________________________________________
>From: Viechtbauer, Wolfgang (NP) <wolfgang.viechtbauer using maastrichtuniversity.nl>
>Sent: Monday, September 19, 2022 4:31 PM
>To: r-sig-meta-analysis using r-project.org <r-sig-meta-analysis using r-project.org>
>Cc: Klaow sota <jija_99 using hotmail.com>
>Subject: RE: Zero event
>
>Dear Klaow,
>
>What kind of effect size / outcome measure are you using?
>
>Best,
>Wolfgang
>
>>-----Original Message-----
>>From: R-sig-meta-analysis [mailto:r-sig-meta-analysis-bounces using r-project.org] On
>>Behalf Of Klaow sota
>>Sent: Monday, 19 September, 2022 11:29
>>To: r-sig-meta-analysis using r-project.org
>>Subject: [R-meta] Zero event
>>
>>Dear everyone,
>>
>>If my data appear zero event, Is any function/code that can improve this
>>phenomenon without cutting the study?
>>I would like to get the effect size and sd/variance. Thank you.
>>
>>Best,
>>Klaow

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