Table 2 Baseline descriptive characteristics before and after propensity score matching
| Â | Control | Intervention | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Unadjusted | Adjusted | ||||||
(n = 52) | (n = 67) | P value | (n = 52) | P value | ||||
Mean (SD) age, years | 63.7 | (8.6) | 67.0 | (8.3) | 0.042 | 66.2 | (8.0) | 0.146 |
Female, n (%) | 32 | (67) | 46 | (75) | 0.393 | 37 | (77) | 0.364 |
Mean (SD) height, cm | 158.4 | (9.2) | 157.4 | (7.4) | 0.549 | 157.4 | (6.5) | 0.552 |
Mean (SD) weight, kg | 65.9 | (13.1) | 61.7 | (10.7) | 0.069 | 62.0 | (11.0) | 0.117 |
Mean (SD) BMI, kg/m2 | 26.1 | (3.9) | 24.8 | (3.4) | 0.072 | 24.9 | (3.6) | 0.127 |
Symptom duration, n (%) | ||||||||
  < 3 mo | 36 | (69) | 43 | (64.2) | 0.415 | 33 | (63.5) | 0.678 |
 3–6 mo | 4 | (8) | 3 | (4.5) |  | 3 | (5.8) |  |
 6–1 y | 4 | (8) | 3 | (4.5) |  | 3 | (5.8) |  |
  > 1 y | 8 | (15) | 18 | (26.9) |  | 13 | (25.0) |  |
Complications, n (%) | ||||||||
 Diabetes | 15 | (29) | 17 | (25) | 0.683 | 9 | (17) | 0.244 |
 Hypertension | 28 | (54) | 29 | (43) | 0.272 | 24 | (46) | 0.557 |
 Varicose veins | 10 | (19) | 25 | (37) | 0.042 | 17 | (33) | 0.179 |
Radiation severity, n (%) | ||||||||
 Operative side |  |  |  |  |  |  |  |  |
  Kellgren–Lawrence grade |  |  |  |  | 0.113 |  |  | 0.148 |
   II | 11 | (21) | 26 | (39) |  | 20 | (38.5) |  |
   III | 27 | (52) | 25 | (37) |  | 20 | (38.5) |  |
   IV IV | 14 | (27) | 16 | (24) |  | 12 | (23) |  |
  Nonoperative side Nonoperative side |  |  |  |  | 0.662 |  |  | 0.563 |
  Kellgren–Lawrence grade Kellgren–Lawrence grade | ||||||||
  Non-KOA | 31 | (59.6) | 33 | (49.3) |  | 26 (50) |  | |
   II | 2 | (3.8) | 2 | (3.0) |  | 1 (2) |  | |
   III | 2 | (3.8) | 7 | (10.4) |  | 4 (8) |  | |
   IV | 1 | (1.9) | 2 | (3.0) |  | 0 (0) | ||
  Postoperatively | 16 | (30.8) | 23 | (34.3) |  | 21 (40) |  | |
Hospitalization month, n (%) | ||||||||
 3–5 | 16 | (31) | 12 | (18) | 0.311 | 11 | (21) | 0.587 |
 6–8 | 12 | (23) | 24 | (36) |  | 17 | (33) |  |
 9–11 | 16 | (31) | 21 | (31) |  | 17 | (33) |  |
 12–2 | 8 | (15) | 10 | (15) |  | 7 | (13) |  |