Have a syntax and output but what analysis is it?

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sinobrie
Posts: 1
Joined: Thu Feb 20, 2014 3:26 pm

Have a syntax and output but what analysis is it?

Postby sinobrie » Thu Feb 20, 2014 3:32 pm

Totally at a loss here as have two different things written down...
Basically I am looking at differences in food weight of 2 time periods and also whether gender had an effect on this...
The syntax I used and had help with is below...I just want to know what is the analysis as I need to plot any significant findings on a grpah in SPSS and I am so lost! Thanks in advance


MIXED logFW BY survey
/FIXED= survey | SSTYPE(3)
/METHOD=REML
/PRINT=SOLUTION TESTCOV
/RANDOM=INTERCEPT | SUBJECT(subjectID) COVTYPE(VC)
/EMMEANS=TABLES(survey) COMPARE ADJ(LSD).


MIXED logFW BY sex survey
/FIXED= survey sex sex*survey | SSTYPE(3)
/METHOD=REML
/PRINT=SOLUTION TESTCOV
/RANDOM=INTERCEPT | SUBJECT(subjectID) COVTYPE(VC)
/EMMEANS=TABLES(survey) COMPARE ADJ(LSD)
/EMMEANS=TABLES(sex) COMPARE ADJ(LSD)
/EMMEANS=TABLES(survey*sex).
bec1119
Posts: 1
Joined: Wed Mar 26, 2014 1:47 pm

Re: Have a syntax and output but what analysis is it?

Postby bec1119 » Wed Mar 26, 2014 2:03 pm

This is a linear mixed model. It can be used to analyze multi-level models such as people in schools or time points in individuals. An example of it's use can be found in Fleeson (2004). Singer (1998) has a discussion that used SAS PROC MIXED and Chapter 15 of Tabachnick & Fidell (2007) has an illustration using SPSS. Also, I would not overlook "IBM SPSS Statistics Command Syntax Reference" which is available under Help in SPSS. Also, UCLA sponsors a great website for statistics help at https://idre.ucla.edu/stats

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