Table 1 Propensity score-matched baseline characteristics of total study population between treated and non-treated patients
Variables | Total | Treated (n = 2092) | Non-treated(n = 2092) | p-value |
|---|---|---|---|---|
Age, mean (S.D.), years | 79.1 (7.1) | 79.2 (7.0) | 79.0 (7.2) | 0.3331 |
Gender, n (%) | Â | Â | Â | 0.6212 |
 Male | 875 (20.9) | 444 (21.2) | 431 (20.6) |  |
 Female | 3309 (79.1) | 1648 (78.8) | 1661 (79.4) |  |
Location, n (%) | Â | Â | Â | 0.8364 |
 North | 1326 (31.7) | 655 (31.3) | 671 (32.1) |  |
 Middle | 1314 (31.4) | 661 (31.6) | 653 (31.2) |  |
 Southern | 1380 (33.0) | 689 (32.9) | 691 (33.0) |  |
 East | 164 (3.9) | 87 (4.2) | 77 (3.7) |  |
Urbanization level, n (%) | Â | Â | Â | 0.8062 |
 Metropolitan areas | 1296 (31.0) | 639 (30.5) | 657 (31.4) |  |
 Satellite cities or towns | 884 (21.1) | 448 (21.4) | 436 (20.8) |  |
 Rural areas | 2004 (47.9) | 1005 (48.1) | 999 (47.6) |  |
Charlson comorbidity index, n (%) | Â | Â | Â | 0.0716 |
 0 | 899 (21.5) | 419 (20.0) | 480 (22.9) |  |
 1 | 1034 (24.7) | 526 (25.1) | 508 (24.3) |  |
  ≥ 2 | 2251 (53.8) | 1147 (54.8) | 1104 (52.8) |  |
Comorbidity, n (%) | ||||
 Diabetes | 1319 (31.5) | 672 (32.1) | 647 (30.9) | 0.4055 |
 Hypertension | 2486 (59.4) | 1249 (59.7) | 1237 (59.1) | 0.7056 |
 Cerebrovascular disease | 1111 (26.6) | 565 (27.0) | 546 (26.1) | 0.506 |
 Heart disease | 1042 (24.9) | 531 (25.4) | 511 (24.4) | 0.4746 |
 Cancer | 86 (2.1) | 45 (2.2) | 41 (2.0) | 0.663 |
 Chronic liver disease | 261 (6.2) | 147 (7.0) | 114 (5.5) | 0.0349 |
 Chronic obstructive pulmonary disease | 792 (18.9) | 398 (19.0) | 394 (18.8) | 0.8746 |
 Chronic kidney disease | 370 (8.8) | 188 (9.0) | 182 (8.7) | 0.7439 |
 Hyperlipidemia | 581 (13.9) | 301 (14.4) | 280 (13.4) | 0.3478 |
Type of hip fracture, n (%) | Â | Â | Â | 0.0005 |
 Neck (ICD9: 820.00, 820.01, 820.03, 820.8) | 1964 (50.2) | 975 (49.0) | 989 (51.6) |  |
 Cervical (ICD9: 820.0, 820.02, 820.09) | 417 (10.7) | 186 (9.3) | 231 (12.0) |  |
 Trochanteric (ICD9: 820.2, 820.20, 820.21) | 1529 (39.1) | 831 (41.7) | 698 (36.4) |  |
Type of operation, n (%) | Â | Â | Â | 0.0078 |
 Open reduction with internal fixation (ICD 9: 79.35 | 1230 (60.5) | 608 (60.0) | 622 (61.0) |  |
 Open reduction without internal fixation (ICD9: 79.25) | 8 (0.4) | 4 (0.4) | 4 (0.4) |  |
 Closed reduction with internal fixation (ICD 9: 79.15) | 101 (5.0) | 67 (6.6) | 34 (3.3) |  |
 Partial hip replacement (ICD-9: 81.52) | 694 (34.1) | 334 (33.0) | 360 (35.3) |  |
Type of treatment, n (%) | Â | Â | Â | 0.8286 |
 Not operated | 2151 (51.4) | 1079 (51.6) | 1072 (51.2) |  |
 Operated | 2033 (48.6) | 1013 (48.4) | 1020 (48.8) |  |
Prescribed by medical specialty, n (%) | Â | Â | Â | 0.6085 |
 Orthopedics | 2634 (63.0) | 1309 (62.6) | 1325 (63.3) |  |
 Non-Orthopedics | 1550 (37.1) | 783 (37.4) | 767 (36.7) |  |