Table 1 Demographic data of RKOAC in baseline

Age

61(53 ~ 70)

63(57 ~ 70)

0.1/0.18

63(54 ~ 70)

62(56 ~ 69)

0.5/0.6

BMI

28.6(26.0 ~ 31.6)

30.3(27.2 ~ 33.9)

3.3/<0.05

29.5(26.6 ~ 32.4)

28.9(26.3 ~ 31.6)

0.7/0.51

RWOMAC

3(0 ~ 13.9)

11.5(2 ~ 25)

5.1/<0.05

6.1(0 ~ 17.3)

7(2 ~ 15.3)

0.5/0.63

RJSW

4(3.0 ~ 4.9)

3.7(2.6 ~ 4.7)

2.1/<0.05

3.8(2.7 ~ 4.6)

3.7(2.5 ~ 5.1)

0.5/0.6

SF-12

41(39 ~ 42)

41(39 ~ 43)

0.05/0.09

41(38 ~ 42.2)

41.5(39 ~ 43)

1.5/0.14

Sex

0.8/0.42

0.4/0.67

male

59(49.2%)

194(45%)

50(51%)

53(54.1%)

female

61(50.8%)

237(55%)

48(49%)

45(45.9%)

Race

3.4/<0.05

0.4/0.69

others

2(1.7%)

6(1.4%)

1(1%)

0

white

105(87.5%)

314(72.8%)

84(85.7%)

84(85.7%)

black

13(10.8%)

109(25.3%)

13(13.3%)

13(13.3%)

yellow

0

2(0.5%)

0

1(1%)

CCI

1.1/0.27

0.5/0.63

0

92(76.7%)

305(70.8%)

75(76.5%)

72(73.5%)

1

17(14.1%)

84(19.5%)

14(14.3%)

14(14.3%)

2

5(4.2%)

34(7.9%)

4(4.1%)

10(10.2%)

3

3(2.5%)

5(1.2%)

3(3.1%)

2(2%)

> 3

3(2.5%)

3(0.7%)

2(2%)

0

Income(5 W)

1.8/0.07

0.8/0.46

Y

78(65%)

241(55.9%)

61(62.2%)

66(67.3%)

N

42(35%)

190(44.1%)

37(37.8%)

32(32.7%)

R-KLG

1.9/0.06

0.5/0.62

2

75(62.5%)

218(50.6%)

55(56.1%)

50(51%)

3

34(28.3%)

185(42.9%)

33(33.7%)

40(40.8%)

4

11(9.2%)

28(6.5%)

10(10.2%)

8(8.2%)

Medicine

0.7/0.48

0.4/0.67

Y

67(55.8%)

225(52.2%)

51(52%)

48(49%)

N

53(44.2%)

206(47.8%)

47(48%)

50(51%)