Table 3.

Multiple stepwise regression of FWS on mobility performance outcomes

	∆R2	B	SEB	β	t	p
Maximal Number of Steps in One Bouta
Step 1	.258					.001
(constant)		3.81	.64		6.00	<.001
FWS		.13	.17	.11	.76	.449
Step 2	.004					.575
(constant)		3.85	.64		5.99	<.001
FWS		−.09	.19	.07	.47	.639
frailty status dichot.		−.06	.11	−.08	−.56	.575
Step 3	.055					.033
(constant)		4.42	.68		6.53	<.001
FWS		−1.14	.60	−.92	−1.92	.060
frailty status dichot.		−.40	.19	−.54	−2.13	.037
frailty stat. x FWS		.76	.35	.85	2.18	.033
total R2 = .317 (N = 66; p = .001)
Average Number of Steps per Bouta
Step 1	.130					.070
(constant)		1.98	.37		5.34	<.001
FWS		.50	.10	.08	.49	.625
Step 2	.001					.834
(constant)		1.99	.38		5.29	<.001
FWS		.04	.11	.06	.36	.718
frailty status dichot.		−.01	.06	−.03	−.21	.834
Step 3	.013					.350
(constant)		2.14	.41		5.23	<.001
FWS		−.28	.36	−.42	−.78	.437
frailty status dichot.		−.10	.11	−.26	−.90	.373
frailty stat. x FWS		.20	.21	.41	.94	.350
total R2 = .144 (N = 66; p = .149)
Cumulated PA
Step 1	.379					<.001
(constant)		70.39	11.43		6.16	<.001
FWS		−1.40	3.14	−.06	−.45	.657
Step 2	.032					.074
(constant)		72.78	11.30		6.44	<.001
FWS		−3.83	3.36	.16	−1.14	.259
frailty status dichot.		−3.49	1.92	−.24	−1.82	.074
Step 3	.006					.455
(constant)		76.38	12.31		6.21	<.001
FWS		−11.56	10.83	−.47	− 1.07	.290
frailty status dichot.		−5.63	3.44	−.39	−1.64	.107
frailty stat. x FWS		4.76	6.33	.27	.75	.455

 total R² = .417 (N = 66; p < .001)

Step 1 to 3 controlled for age, number of comorbidities, and bmi

FWS Fast walking speed

^a: log-transformed