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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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MANOVA: Repeated Measures<br />

Overview<br />

MANOVA is available in the Advanced Models option.<br />

MANOVA dependent varlist [BY factor list (min,max)[factor list...]<br />

[WITH [varying covariate list] [(constant covariate list)]]<br />

/WSFACTORS = varname (levels) [varname...]<br />

[/WSDESIGN = [effect effect...]<br />

[/MEASURE = newname newname...]<br />

[/RENAME = newname newname...]<br />

[/{PRINT }=[SIGNIF({AVERF**}) (HF) (GG) (EFSIZE)]]<br />

{NOPRINT} {AVONLY }<br />

[/DESIGN]*<br />

* The DESIGN subcommand has the same syntax as is described in MANOVA: Univariate.<br />

** Default if subcommand or keyword is omitted.<br />

Example<br />

MANOVA Y1 TO Y4 BY GROUP(1,2)<br />

/WSFACTORS=YEAR(4).<br />

This section discusses the subcommands that are used in repeated measures designs, in<br />

which the dependent variables represent measurements of the same variable (or variables)<br />

at different times. This section does not contain information on all subcommands you will<br />

need to specify the design. For some subcommands or keywords not covered here, such as<br />

DESIGN, see MANOVA: Univariate. For information on optional output and the multivariate<br />

significance tests available, see MANOVA: Multivariate.<br />

• In a simple repeated measures analysis, all dependent variables represent different<br />

measurements of the same variable for different values (or levels) of a within-subjects<br />

factor. Between-subjects factors and covariates can also be included in the model, just<br />

as in analyses not involving repeated measures.<br />

• A within-subjects factor is simply a factor that distinguishes measurements made on<br />

the same subject or case, rather than distinguishing different subjects or cases.<br />

• MANOVA permits more complex analyses, in which the dependent variables represent<br />

levels of two or more within-subjects factors.<br />

• MANOVA also permits analyses in which the dependent variables represent measurements<br />

of several variables for the different levels of the within-subjects factors. These<br />

are known as doubly multivariate designs.<br />

• A repeated measures analysis includes a within-subjects design describing the model to<br />

be tested with the within-subjects factors, as well as the usual between-subjects design<br />

882

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