Potential influencing factor on health-related quality of life in Japanese with knee osteoarthritis: the Locomotive syndrome and Health outcome in Aizu cohort Study (LOHAS)

Journal of Experimental Orthopaedics

Table 2 Univariate analysis investigating association between each QOL scores and confounding factors

	PCS score	P-value	MCS score	P-value	RCS score	P-value
	[mean(SD)]	P-value	[mean(SD)]	P-value	[mean(SD)]	P-value
age
< 50	51.2(8.7)	< 0.0001	50.7(7.0)	0.0286	51.1(9.5)	0.0032
50–59	46.1(13.3)		49.3(8.3)		50.9(8.6)
60–69	44.6(12.1)		49.3(10.0)		49.4(10.6)
70≦	38.7(14.8)		51.7(10.4)		46.6(11.6)
gender
male	44.7(13.0)	< 0.0001	50.7(10.7)	0.8516	49(11.5)	0.074
female	39.9(14.3)	< 0.0001	50.6(9.9)	0.8516	47.4(10.8)	0.074
BMI
BMI < 25	42.6(13.5)	0.0309	50.5(10.1)	0.6309	47.7(11.1)	0.4987
BMI≧25	40.2(14.8)	0.0309	50.9(10.4)	0.6309	48.3(11.1)	0.4987
radiographic KOA
none	46.7(12.0)	< 0.0001	46.0(9.7)	0.0034	49.7(10.4)	0.3708
mild-moderate	44.5(12.9)		50.2(9.8)		48.3(11.4)
severe	38.0(14.6)		51.6(10.4)		47.4(10.8)
knee pain
none	44.7(10.3)	< 0.0001	50.3(11.5)	0.6729	46.1(11.0)	0.1383
mild-moderate	43.6(12.5)		50.5(9.7)		48.4(10.8)
severe	28.6(16.3)		51.5(12.7)		46.1(12.4)
TUG(sec)
TUG < 10	43.4(12.9)	< 0.0001	50.4(9.9)	0.2499	48.9(10.5)	0.0001
TUG≧10	31.8(15.9)	< 0.0001	51.7(11.6)	0.2499	42.9(13.0)	0.0001
CES-D-10
CES-D-10 < 9	42.5(13.4	0.0004	51.7(10.0)	< 0.0001	49.1(10.4)	< 0.0001
CES-D-10≧10	37.2(16.5)	0.0004	45.2(9.7)	< 0.0001	42.3(12.6)	< 0.0001
PSE
low PSE	35.5(15.2)	< 0.0001	50.8(11.2)	0.7743	44.6(12.0)	< 0.0001
high PSE	45.8(11.4)	< 0.0001	50.5(9.4)	0.7743	50.3(9.8)	< 0.0001
FSE
low PSE	31.6(15.2)	< 0.0001	51.8(10.8)	0.2194	44(11.5)	0.0001
high PSE	43.4(13.0)	< 0.0001	50.4(10.1)	0.2194	48.7(10.9)	0.0001

SD Standard deviation, BMI Body mass index, KOA Knee osteoarthritis, TUG Timed up and go test, CES-D The Center for Epidemiologic Studies Depression Scale, PSE Pain-related self-efficacy, FSE Functional self-efficacy