. Author manuscript; available in PMC: 2017 Apr 1.

Published in final edited form as: J Aging Phys Act. 2015 Sep 15;24(2):214–222. doi: 10.1123/japa.2015-0104

Table 2.

Unadjusted Linear Regression Models for Steps per Day

	n	p-value for F	R²	β	95% CI for β	Standardized β
SSWS^*	65	<0.001	0.51	8703.80	(6558.84, 10848.76)	0.715
MWS	66	<0.001	0.35	5554.00	(3652.88, 7455.12)	0.589
WSRdiff	66	0.14	0.03	3317.39	(−1104.30, 7739.09)	0.184
WSRratio^†	66	0.04	0.06	0.54	(0.30, 0.98)	0.558

Abbreviations: CI, confidence interval; SSWS, self-selected walking speed; MWS, maximal walking speed; WSRdiff, walking speed reserve calculated as a difference (MWS – SSWS); WSRratio, walking speed reserve calculated as a ratio (MWS/SSWS)

One outlier removed (14,608.86 steps per day and SSWS = 1.04 m/s) in order to normalize residuals for SSWS model

^†

Steps per day log transformed in order to normalize residuals for WSRratio model