Characteristics | Number of imputed data points | Total (N = 8193) | No symptomatic KOA (N = 7378) | Symptomatic KOA (N = 815) | P |
---|---|---|---|---|---|
Age, mean (SD) years | 0 | 58.82 (9.01) | 58.73 (9.06) | 59.60 (8.45) | < 0.01 |
Sex | 0 |  |  |  | < 0.01 |
 Male |  | 3942 (48.11) | 3664 (49.66) | 278 (34.11) |  |
 Female |  | 4251 (51.89) | 3714 (50.34) | 537 (65.89) |  |
BMI, mean (SD) kg/m2 | 0 | 23.46 (3.49) | 23.44 (3.47) | 23.47 (3.48) | 0.805 |
Waist circumference, mean (SD) cm | 0 | 85.31 (9.58) | 85.34 (9.54) | 85.12 (9.56) | 0.521 |
Residence area | 0 |  |  |  | < 0.01 |
 Rural, % |  | 5406 (65.98) | 4816 (65.28) | 590 (72.39) |  |
 Urban, % |  | 2787 (34.02) | 2562 (34.72) | 225 (27.61) |  |
Smoke behavior | 40 |  |  |  | < 0.01 |
 No smoking, % |  | 4945 (60.36) | 4374 (59.28) | 571 (70.06) |  |
 Ex-smoking, % |  | 687 (8.39) | 624 (8.46) | 63 (7.73) |  |
 Current smoking, % |  | 2561 (31.26) | 2380 (32.26) | 181 (22.21) |  |
ADL/IADL difficulty | 16 |  |  |  | < 0.01 |
 No, % |  | 6283 (76.69) | 5787 (78.44) | 496 (60.86) |  |
 Yes, % |  | 1910 (23.31) | 1591 (21.56) | 319 (39.14) |  |
MS | 1312 | Â | Â | Â | 0.708 |
 No, % |  | 6794 (82.92) | 6122 (82.98) | 672 (82.45) |  |
 Yes, % |  | 1399 (17.08) | 1256 (17.02) | 143 (17.55) |  |
Hip fracture | 72 |  |  |  | < 0.01 |
 No, % |  | 7941 (96.92) | 7167 (97.14) | 774 (94.97) |  |
 Yes, % |  | 252 (3.08) | 211 (2.86) | 41 (5.03) |  |
Depression | 1427 |  |  |  | < 0.01 |
 No, % |  | 6132 (74.84) | 5702 (77.28) | 430 (52.76) |  |
 Mild, % |  | 1896 (23.14) | 1561 (21.16) | 335 (41.1) |  |
 Moderate-to-severe, % |  | 165 (2.01) | 115 (1.56) | 50 (6.13) |  |
Comorbidities | 0 |  |  |  | < 0.01 |
 None, % |  | 3778 (46.11) | 3498 (47.41) | 280 (34.36) |  |
 1~2, % |  | 3659 (44.66) | 3253 (44.09) | 406 (49.82) |  |
 ≥ 3, % |  | 756 (9.23) | 627 (8.5) | 129 (15.83) |  |
Health status | 3 |  |  |  | < 0.01 |
 Very good, % |  | 289 (3.53) | 278 (3.77) | 8 (0.98) |  |
 Good, % |  | 1075 (13.12) | 1037 (14.06) | 38 (4.66) |  |
 Fair, % |  | 2752 (33.59) | 2538 (34.4) | 214 (26.26) |  |
 Poor, % |  | 2957 (36.09) | 2607 (35.33) | 350 (42.94) |  |
 Very poor, % |  | 1120 (13.67) | 915 (12.4) | 205 (25.15) |  |
Physical Activity Score | Â | Â | Â | Â | Â |
 VPA score | 4743 |  |  |  | 0.507 |
  No PA, % |  | 4942 (60.32) | 4462 (60.48) | 480 (58.9) |  |
  Low level, % |  | 590 (7.20) | 524 (7.1) | 66 (8.1) |  |
  Middle-to-high level, % |  | 2661 (32.48) | 2392 (32.42) | 269 (33.01) |  |
 MPA score | 4750 |  |  |  | < 0.01 |
  No PA, % |  | 3192 (38.96) | 2914 (39.5) | 278 (34.11) |  |
  Low level, % |  | 891 (10.88) | 798 (10.82) | 93 (11.41) |  |
  Middle-to-high level, % |  | 4110 (50.16) | 3666 (49.69) | 444 (54.48) |  |
 LPA score | 4751 |  |  |  | 0.842 |
  No PA, % |  | 1586 (19.36) | 1431 (19.4) | 155 (19.02) |  |
  Low level, % |  | 1389 (16.95) | 1245 (16.87) | 144 (17.67) |  |
  Middle-to-high level, % |  | 5218 (63.69) | 4702 (63.73) | 516 (63.31) |  |