. Author manuscript; available in PMC: 2014 Sep 1.

Published in final edited form as: Arch Gerontol Geriatr. 2013 May 13;57(2):198–203. doi: 10.1016/j.archger.2013.04.007

Table 3.

Variance in Function Related to Energy Cost of Walking

Model	Step	Variable	β (P)	R² (P)	R² change
1	1	Energy Cost	−.446 (.002)	.199 (.002)	-

	1	Comorbidity	−.234 (.136)	.055 (.136)	-

	2	Comorbidity	−.286 (.037)	.328 (.0001)	.273
	2	Energy Cost	−.525 (.0001)	.328 (.0001)	.273

	1	Gait Speed	.435 (.003)	.190(.003)	-

	2	Gait Speed	.336 (.016)	.303 (.001)	.113
	2	Energy Cost	−.351 (.012)	.303 (.001)	.113

	1	Comorbidity	−.131 (.365)	.249 (.004)	-
	1	Gait Speed	.425 (.003)	.249 (.004)	-

	2	Comorbidity	−.203 (.124)	.420 (.0001)	.172
		Gait Speed	.326 (.019)
		Energy Cost	−.434 (.002)

β = Standardized coefficient