Re: SPSS Syntax MIXED Model

Posted by Steph Bullen on
URL: http://spssx-discussion.165.s1.nabble.com/SPSS-Syntax-MIXED-Model-tp5713934p5730198.html

Hi Gene,

Thank you very much for your reply!

I have 441 calves which are allocated to two different treatments, control (n=220) and treatment (n=221).

Calves were weighed on Day 0 (Baseline in kg) and treatment group received treatment. Calves were different ages on Day 0 and this was recorded (Age in days)

Calves in both groups were on each farm and predominant breeds on each farm was variable but there were equal numbers of each breed (by t-test) in each group.

Calves were then weighed at approximately 6 weeks (37-50 days; depending on farm; all calves on one farm were weighed on the same day) then again at 12 weeks (80-106 days).

The error message is appearing when I run your syntax (above) with only time as the predictor. It also has an error whenever time*farm is put into the model. It is happy with all other interaction terms.

Any help/thoughts/suggestions greatly appreciated! :)

Steph