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Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: Correction for retest effects across repeated measures of cognitive functioning: a longitudinal cohort study of postoperative delirium

Fig. 2

Mean general cognitive performance (GCP) in the surgical vs. non-surgical comparison (NSC) groups. Raw GCP performance in the surgery group (n = 560, dashed line, 95% C.I.s in light gray) and NSC group (n = 118, solid line, 95% C.I.s in dark gray) estimated using marginal means derived from a linear mixed effects model with random intercept and fixed effects for assessment time points coded as dichotomous “dummy” variables, surgery vs. NSC dichotomous grouping variable, and no additional covariables. X-axis: assessment time point (months since surgery); Y-axis: model-estimated GCP performance

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