Yes it converged with family(gamma) and after I had removed some
covariates. Can someone tell med what an analysis with family(gamma)
link(power -1) means?
I think this gets too complicated and the difference in LOS is so
small that it has no importance. I will content with stating there was
no difference in median LOS and use Mann-Whitney test and skip the
modelling of the LOS.
Thanks for all your input
Roland
2008/11/6 Nick Cox <[email protected]>:
> Sometimes a gamma family works well for reciprocal links.
>
> Nick
> [email protected]
>
> roland andersson
>
> Thank you Peter
>
> I tried that but unfortunately the model did not converge.
>
> 2008/11/6 Lachenbruch, Peter <[email protected]>:
>
>> You need a space between power and -1
>> Check the help for glm
>
> Roland andersson
>
>> I tried the model
>>
>> xi: glm lengthof stay lapscopy i.appdgn2 i.alderk prepermalign
>> precardioscleros preperdiabetes cons, eform link(power-1) nocons
>> and get an error message "unrecognized command: power"
>>
>
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