| Before PSM |  |  |  |  | After PSM |  |  |  |
---|---|---|---|---|---|---|---|---|---|
Variables | Control | Â | Exposure | Z/P | Â | Control | Â | Exposure | Z/P |
 | n = 127 |  | n = 431 |  |  | n = 117 |  | n = 117 |  |
Age | 62(56 ~ 70) |  | 63(57 ~ 70) | 0.2/0.83 |  | 61(55 ~ 70) |  | 62(54 ~ 70) | 0.2/0.87 |
BMI | 29.3(26.4 ~ 32.7) |  | 30.3(27.2 ~ 33.9) | 1.8/0.07 |  | 29.3(26.4 ~ 32.7) |  | 28.9(26.4 ~ 32.2) | 0.4/0.65 |
LWOMAC | 5(0 ~ 19.8) |  | 10(1 ~ 28) | 2.1/<0.05 |  | 5(0 ~ 23.5) |  | 9(1 ~ 24) | 1.1/0.26 |
LJSW | 4(3.2 ~ 4.7) |  | 3.9(2.9 ~ 4.8) | 0.8 < 0.05 |  | 3.9(3.1 ~ 4.7) |  | 3.9(2.9 ~ 4.9) | 0.3/0.76 |
SF-12 | 41(39 ~ 43) |  | 41(39 ~ 43) | 1.1/0.27 |  | 41(39 ~ 43) |  | 41(39 ~ 42) | 1.1/0.27 |
Sex | Â | Â | Â | 1.4/0.15 | Â | Â | Â | Â | 0.3/0.79 |
male | 48(37.8%) | Â | 194(45%) | Â | Â | 46(39.3%) | Â | 44(37.6%) | Â |
female | 79(62.2%) | Â | 237(55%) | Â | Â | 71(60.7%) | Â | 73(62.4%) | Â |
Race | Â | Â | Â | 3.0/<0.05 | Â | Â | Â | Â | 0.4/0.68 |
others | 0 | Â | 6(1.4%) | Â | Â | 0 | Â | 1(0.9%) | Â |
white | 112(88.2%) | Â | 314(72.8%) | Â | Â | 102(87.2%) | Â | 98(83.7%) | Â |
black | 15(11.8%) | Â | 109(25.3%) | Â | Â | 15(12.8%) | Â | 17(14.5%) | Â |
yellow | 0 | Â | 2(0.5%) | Â | Â | 0 | Â | 1(0.9%) | Â |
CCI | Â | Â | Â | 0.7/0.49 | Â | Â | Â | Â | 1.1/0.27 |
0 | 94(74%) | Â | 305(70.8%) | Â | Â | 87(74.3%) | Â | 79(67.5%) | Â |
1 | 22(17.3%) | Â | 84(19.5%) | Â | Â | 20(17.1%) | Â | 26(22.2%) | Â |
2 | 8(6.3%) | Â | 34(7.9%) | Â | Â | 8(6.8%) | Â | 10(8.5%) | Â |
3 | 1(0.8%) | Â | 5(1.2%) | Â | Â | 1(0.9%) | Â | 1(0.9%) | Â |
> 3 | 2(1.6%) |  | 3(0.7%) |  |  | 1(0.9%) |  | 1(0.9%) |  |
Income(5Â W) | Â | Â | Â | 0.3/0.76 | Â | Â | Â | Â | 0.7/0.51 |
Y | 73(57.5%) | Â | 241(55.9%) | Â | Â | 69(59%) | Â | 64(54.7%) | Â |
N | 54(42.5%) | Â | 190(44.1%) | Â | Â | 48(41%) | Â | 53(45.3%) | Â |
L-KLG | Â | Â | Â | 2.0/<0.05 | Â | Â | Â | Â | 0.4/0.69 |
2 | 85(66.9%) | Â | 245(56.8%) | Â | Â | 75(64.1%) | Â | 73(62.4%) | Â |
3 | 35(27.6%) | Â | 154(35.7%) | Â | Â | 35(29.9%) | Â | 34(29.1%) | Â |
4 | 7(5.5%) | Â | 32(7.4%) | Â | Â | 7(6%) | Â | 10(8.5%) | Â |
Medicine | Â | Â | Â | 2.2/<0.05 | Â | Â | Â | Â | 0.5/0.6 |
Y | 52(40.9%) | Â | 225(52.2%) | Â | Â | 51(43.6%) | Â | 47(40.2%) | Â |
N | 75(59.1%) | Â | 206(47.8%) | Â | Â | 66(56.4%) | Â | 70(59.8%) | Â |