Date:         Wed, 9 Feb 2005 11:18:46 -0800
Reply-To:     Dale McLerran <stringplayer_2@YAHOO.COM>
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From:         Dale McLerran <stringplayer_2@YAHOO.COM>
Subject:      Re: NLMIXED: DF for test parameter test statistics
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Adel,

I have not seen NLMIXED report more df than subjects unless the
user specifies degrees of freedom as an option on the NLMIXED
statement or on a CONTRAST, ESTIMATE, or PREDICT statement.
Can you show us your log and list files where the df are more
than the number of subjects.

Dale

--- "adel F." <adel_tangi@YAHOO.FR> wrote:

> Hi ,
> It is possible that the degree of freedom of the test statistics for
> the parameter estimates in the NLMIXED is greater than the number of
> subjects.
>
> The number of my subjects is 850 in a random intercept model
> and the DF is 1001  ? it should be 849
> Thanks for any explanation
> Regards
> Adel
>
>
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=====
---------------------------------------
Dale McLerran
Fred Hutchinson Cancer Research Center
mailto: dmclerra@NO_SPAMfhcrc.org
Ph:  (206) 667-2926
Fax: (206) 667-5977
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