Re: st: When is 'no trimming' performed using metatrim

[William Buchanan <william@williambuchanan.net>]

Hi Setor,

Prior to posting to the Statalist, you were asked to read the FAQ (the link is at the bottom of all emails).  One of the standards of releasing packages into the public sphere is to include a version statement in the program file.  Because authors may find bugs, add additional options, or optimize the performance of the package there can be multiple versions of the same program floating around in cyber space.  From the command line, type -which metatrim- and that should provide you with the version information.  It is possible that the problem you're facing is due to out-of-date software, in which case the fix is simple.  However, if that is not the case, it is helpful for others to be able to replicate your problems which would require them to use the same version of the program.

HTH,
Billy



On Feb 26, 2013, at 6:17 AM, Setor Kunutsor <skk31@medschl.cam.ac.uk> wrote:

> Can you be a bit specific as I am not sure what you refer to. This is the first time am using statalist
> 
> -Setor
> 
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten Buis
> Sent: 26 February 2013 14:02
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: When is 'no trimming' performed using metatrim
> 
> That is not sufficient information. See the Statalist FAQ for several examples of what is needed.
> 
> We don't do this because we are mean (we may or may not be but that is for others to deside) but because there are often multiple version of user written software floating around in cyberspace and it helps if we are talking about the same program. You have given us the author, but that typically remains constant over versions, so that does not help us resolve this issue.
> 
> -- Maarten
> 
> On Tue, Feb 26, 2013 at 1:59 PM, Setor Kunutsor <skk31@medschl.cam.ac.uk> wrote:
>> Metatrim (author: Thomas J. Steichen, RJRT, steicht@rjrt.com)
>> 
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
>> Sent: 24 February 2013 14:13
>> To: statalist@hsphsun2.harvard.edu
>> Subject: Re: st: When is 'no trimming' performed using metatrim
>> 
>> Please explain where user-written commands you refer to come from.
>> 
>> Nick
>> 
>> On Sun, Feb 24, 2013 at 1:58 PM, Setor Kunutsor <skk31@medschl.cam.ac.uk> wrote:
>> 
>>> I have conducted a meta-analysis based on a total of 10 studies using a Random-effects model. There was substantial heterogeneity among contributing studies (I2>70%).
>>> 
>>> A funnel plot revealed evidence of publication bias which was further confirmed by Egger's regression symmetry test (P=0.03).
>>> 
>>> I am using the trim-and-fill method to adjust for publication bias. I am aware this method performs poorly in the presence of substantial between study heterogeneity.
>>> 
>>> On running the metatrim command, the output suggests that no trimming was performed.
>>> 
>>> What does this mean? Does it mean there was no publication bias? How do I interpret the results?
>> 
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> 
> 
> --
> ---------------------------------
> Maarten L. Buis
> WZB
> Reichpietschufer 50
> 10785 Berlin
> Germany
> 
> http://www.maartenbuis.nl
> ---------------------------------
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