. Author manuscript; available in PMC: 2022 Nov 1.

Published in final edited form as: J Am Geriatr Soc. 2021 Jul 6;69(11):3194–3202. doi: 10.1111/jgs.17351

Table 2.

Results of linear mixed effects models predicting rapid gait speed.

	Unstandardized estimate (SE), p-value
	Time*Met/Val	Time*Val/Val
Model 1: Usual gait speed	.004 (.001), p=.015	.003 (.002), p=.050
Model 1 + Demographic (Model 2)	.004 (.001), p=.005	.003 (.002), p=.056
Model 1 + Health Factors (Model 3)	.004 (.001), p=.004	.004 (.002), p=.067
Model 1 + Sensorimotor Function (Model 4)	.005 (.002), p=.005	.004 (.002), p=.042
Model 1 + Knee Pain (Model 5)	.004 (.001), p=.005	.003 (.002), p=.049
Model 1 + Exercise & Walking (Model 6)	.005 (.001), p= .002	.003 (.001), p=.042
Model 1 + Cognition (Model 7)	.004 (.001), p=.015	.003 (.002), p=.035
Model 1 + Depressive Symptoms (Model 8)	.004 (.0001), p=.006	.003 (.002), p=.035
Model 1 + Energy (Model 9)	.004 (.001), p=.015	.003 (.002), p=.050

Note. Time*Met/Met was the reference group. Model 1 was additionally adjusted for the main effects of COMT genotype and time. SE = Standardized error.