Table 1 Baseline characteristics of participants according to the sarcopenia index
Characteristics | Total n = 897 | Internal fixation n = 556 | Joint replacement n = 341 | ||||||
|---|---|---|---|---|---|---|---|---|---|
low muscle mass | high muscle mass | p | low muscle mass | high muscle mass | p | low muscle mass | high muscle mass | p | |
Age, years, n(%) | <0.001 | 0.004 | 0.053 | ||||||
60-70 | 87(19.4) | 133(29.7) | 55(19.7) | 84(30.3) | 33(19.3) | 48(28.2) | |||
>70 | 362(80.6) | 15(70.3) | 224(80.3) | 193(69.7) | 138(80.7) | 122(71.8) | |||
Age, years, mean (SD) | 78.3(8.5) | 75.5(8.9) | 77.9(8.6) | 75.3(8.9) | 78.8(8.4) | 75.9(8.9) | |||
Sex, n(%) | <0.001 | <0.001 | <0.001 | ||||||
male | 95(21.2) | 211(47.1) | 65(23.3) | 124(44.8) | 30(17.5) | 87(51.2) | |||
female | 354(78.8) | 237(52.9) | 214(76.7) | 153(55.2) | 141(82.46) | 83(48.8) | |||
ALB level, g/l, n(%) | <0.001 | <0.001 | 0.027 | ||||||
<35 g/l | 192(42.8) | 124(27.7) | 121(43.4) | 71(25.6) | 72(42.1) | 52(30.6) | |||
≥ 35 g/l | 257(57.2) | 324(72.3) | 158(56.6) | 206(74.4) | 99(57.9) | 118(69.4) | |||
BMI, kg/m2, mean (SD) | 21.70(3.13) | 22.42(3.37) | 0.001 | 21.68(3.12) | 22.48(3.47) | 0.005 | 21.74(3.14) | 22.32(3.21) | 0.095 |
eGFR, mL/min/1.73 m2, mean (SD) | 97.43(31.23) | 78.11(25) | <0.001 | 97.54(31.72) | 77.61(24.94) | <0.001 | 97.25(30.43) | 78.8(25.77) | <0.001 |
Smoking history,n(%) | <0.001 | 0.163 | <0.001 | ||||||
no | 398(88.6) | 358(79.9) | 238(85.3) | 224(80.9) | 161(94.2) | 133(78.2) | |||
yes | 51(11.4) | 90(20.1) | 41(14.7) | 53(19.1) | 10(5.8) | 37(21.8) | |||
Drinking history,n(%) | <0.001 | 0.413 | <0.001 | ||||||
no | 414(92.2) | 378(84.4) | 249(89.3) | 241(87) | 166(97.1) | 136(80) | |||
yes | 35(7.8) | 70(15.6) | 30(10.7) | 36(13) | 5(2.9) | 34(20) | |||
Marital status, n(%) | <0.001 | 0.041 | <0.001 | ||||||
married | 325(72.4) | 375(83.7) | 211(75.6) | 229(82.7) | 115(67.3) | 145(85.3) | |||
single or divorced or widowed | 124(27.6) | 73(16.3) | 68(24.4) | 48(17.3) | 56(32.7) | 25(14.7) | |||
Methods of anesthesia,n(%) | 0.589 | 0.509 | 0.987 | ||||||
local anaesthesia | 48(10.7) | 53(11.8) | 34(12.2) | 39(14.1) | 14(8.2) | 14(8.2) | |||
general anesthesia | 401(89.3) | 395(88.2) | 245(87.8) | 238(85.9) | 157(91.8) | 156(91.8) | |||
Hypertension,n(%) | 0.969 | 0.91 | 0.96 | ||||||
no | 257(57.2) | 257(57.4) | 178(63.8) | 178(64.3) | 79(46.2) | 79(46.5) | |||
yes | 192(42.8) | 191(42.6) | 101(36.2) | 99(35.7) | 92(53.8) | 91(53.5) | |||
Diabetes,n(%) | 0.058 | 0.026 | 0.977 | ||||||
no | 365(81.3) | 341(76.1) | 231(82.8) | 208(75.1) | 134(78.4) | 133(78.2) | |||
yes | 84(18.7) | 107(23.9) | 48(17.2) | 69(24.9) | 37(21.6) | 37(21.8) | |||
CHD,n(%) | 0.488 | 0.279 | 0.986 | ||||||
no | 423(94.2) | 417(93.1) | 270(96.8) | 263(94.9) | 154(90.06) | 153(90) | |||
yes | 26(5.8) | 31(6.9) | 9(3.2) | 14(5.1) | 17(9.94) | 17(10) | |||
COPD, n(%) | 0.643 | 0.418 | 0.772 | ||||||
no | 377(84) | 371(82.8) | 232(83.2) | 223(80.5) | 146(85.4) | 147(86.5) | |||
yes | 72(16) | 77(17.2) | 47(16.8) | 54(19.5) | 25(14.6) | 23(13.5) | |||