Table 4.

Correlation coefficients between physical activity/ADL and other parameters on multivariable linear regression analysis. (A) Correlation coefficients between TUG time and other parameters. (B) Correlation coefficients between mHAQ and other parameters. (C) Correlation coefficients between SAFE-Q (Physical functioning) and other parameters. (D) Correlation coefficients between SAFE-Q (Social functioning) and other parameters.

(A)
	β	95% CI	p value
Age	0.29	0.087–0.326	0.001
HKA angle	−0.277	−0.77–−0.194	0.002
M2-M5A	−0.256	−0.806–0.108	0.011
Ankle Larsen	0.214	0.535–3.286	0.007
Talo-1st metatarsal angle	0.452	0.183–0.604	<0.001
Calcaneal pitch angle	−0.326	0.187–0.92	0.004
mHAQ	0.281	1.88–7.401	0.001
(B)
	β	95% CI	p value
Calcaneal pitch angle	−0.29	−0.051–−0.009	0.006
pVAS	0.288	0.019–0.125	0.009
dVAS	0.328	0.053–0.226	0.002
TUG	0.297	0.005–0.031	0.007
(C)
	β	95% CI	p value
HKA angle	0.185	0.095–1.799	0.03
Hip Larsen	0.189	0.657–9.521	0.026
SAFE-Q (Social functioning)	0.755	0.454–0.715	<0.001
(D)
	β	95% CI	p value
M1-M2A	−0.347	−2.665–0.988	<0.001
Subtalar Larsen	0.17	0.18–8.938	0.042
SAFE-Q (Physical functioning)	0.756	0.767–1.178	<0.001

Multivariable linear regression analysis with a forward stepwise procedure was performed to analyze correlation coefficients. TUG: timed-up-and-go test, ADL: activities of daily living, HKA: hip–knee–ankle, M2-M5A: intermetatarsal angle between the second and fifth metatarsal bones, mHAQ: modified Health Assessment Questionnaire, pVAS: patient’s visual analog scales, dVAS: doctor’s visual analog scales, SAFE-Q: self-administered foot evaluation questionnaire, M1-M2A: intermetatarsal angle between the first and second metatarsal bones.