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. Author manuscript; available in PMC: 2017 Sep 4.
Published in final edited form as: Nat Protoc. 2016 May 19;11(6):1112–1129. doi: 10.1038/nprot.2016.048

Figure 3.

Figure 3

Screenshots showing SPSS windows involved in specification of a model using the “MIXED” procedure. (A) Specification of the variable which identifies the subjects in the study (“rat”) and the variable which identifies the sessions during which repeated measurements were obtained (“wave”). Covariance structure is specified from the drop-down window. (B) Specification of the dependent variable (“outcome”) and the factor(s) and covariate(s) (“group”, “wave” and “mean_preop”) that are hypothesised to affect the dependent variable.