Table 4.

Linear regression analyses for prediction models for the 6-meter walking speed test

	Unadjusted model		Stepwise model
			Step I		Step II
	b (se)	p	b (se)	p	b (se)	p
Age (≥ 75 vs < 75)	-0.23 (0.04)	<0.001			-0.15 (0.04)	<0.001
Sex (female vs. male)	-0.13 (0.04)	<0.001
Education (primary vs junior and above)	-0.15 (0.04)	<0.001
Exercise (≥ 3/ week vs < 3/ week)	0.17 (0.05)	<0.001
Height (cm)	0.01 (0.002)	<0.001
Weight (kg)	0.004 (0.002)	0.047
Hand grip strength (kg)	0.02 (0.002)	<0.001	0.02 (0.002)	<0.001	0.01 (0.002)	<0.001
Upper limbs muscle mass (kg)	0.07 (0.02)	<0.001
Lower limbs muscle mass (kg)	0.02 (0.01)	0.002
Diabetes mellitus (yes vs. no)	-0.10 (0.05)	0.029
Hypertension (yes vs. no)	-0.11 (0.04)	0.004
Heart diseases (yes vs. no)	-0.12 (0.04)	0.004
Stroke (yes vs. no)	-0.26 (0.10)	0.009
Lower limb arthritis (yes vs. no)	-0.11 (0.05)	0.025
Depression (yes vs. no)	-0.21 (0.06)	<0.001
Adjusted R-square			0.20		0.24