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(A) Modeling of trajectory of subjective energy level (SEL): linear mixed model with quadratic term (B) Graphical representation of predicted values of SEL in PD group (solid line) versus non-PD group (dashed line). Fit computed at baseline SEL, 6.742; age, 74.48 years; baseline CESD-D-10, 2.91; male sex. See Supplementary Material S1 for what defines baseline for each variable specified.
