Table 3.
Univariate analysis of surgically relevant characteristics in the over 75-year-old patients that underwent surgery for a hip fracture stratified by body mass index
| Category | Body Mass Index (kg/m2) |
p-value | ||||||
|---|---|---|---|---|---|---|---|---|
| <18.5 | 18.5-24.9 | 25-29.9 | 30-34.9 | 35-39.9 | 40-49.9 | ≥50 | ||
| Number of Patients, n (%) | 4743 (9.0) | 26620 (50.5) | 14777 (28.0) | 4846 (9.2) | 1208 (2.3) | 411 (0.8) | 124 (0.2) | |
| Age (mean ± deviation) | 85.4 ± 4.7 | 85.4 ± 4.7 | 84.5 ± 4.8 | 83.5 ± 4.9 | 82.6 ± 5.0 | 82.2 ± 5.0 | 84.5 ± 4.6 | <0.001 |
| Male, n (%) | 717 (15.1) | 7025 (26.4) | 5119 (34.6) | 1489 (30.7) | 327 (27.1) | 77 (18.7) | 44 (35.5) | <0.001 |
| Diabetes, n (%) | 117 (2.5) | 1135 (4.3) | 1139 (7.7) | 579 (12.0) | 218 (18.1) | 81 (19.7) | 12 (9.7) | <0.001 |
| Smoking, n (%) | 582 (12.3) | 1752 (6.6) | 678 (4.6) | 230 (4.8) | 55 (4.6) | 12 (2.9) | 9 (7.3) | <0.001 |
| Dyspnea, Exertion, n (%) | 306 (6.5) | 1532 (5.8) | 943 (6.4) | 355 (7.3) | 121 (10.0) | 49 (11.9) | 17 (13.7) | <0.001 |
| Dyspnea, Rest, n (%) | 72 (1.5) | 242 (0.9) | 136 (0.9) | 65 (1.3) | 28 (2.3) | 5 (1.2) | 2 (1.2) | |
| Limited Function, n (%) | 1132 (24.0) | 5517 (20.9) | 2706 (18.5) | 829 (17.2) | 210 (17.6) | 83 (20) | 21 (17.1) | <0.001 |
| Dependent Function, n (%) | 262 (5.6) | 1034 (3.9) | 436 (3.0) | 139 (2.9) | 27 (2.3) | 15 (3.7) | 4 (3.3) | |
| Missing Function, n (%) | 33 (0.7) | 224 (0.8) | 119 (0.8) | 38 (0.8) | 14 (1.2) | 3 (0.7) | 1 (0.8) | 0.837 |
| Chronic Pulmonary Disease, n (%) | 729 (15.4) | 2646 (9.9) | 1346 (9.1) | 516 (10.7) | 173 (14.3) | 55 (13.4) | 14 (11.3) | <0.001 |
| Heart Failure, n (%) | 165 (3.5) | 980 (3.7) | 639 (4.3) | 279 (5.8) | 76 (6.3) | 28 (6.8) | 5 (4.0) | <0.001 |
| Hypertension, n (%) | 2933 (61.8) | 18175 (68.3) | 11027 (74.6) | 3889 (80.3) | 995 (82.4) | 328 (79.8) | 103 (83.1) | <0.001 |
| Hemodialysis, n (%) | 4743 (0.9) | 333 (1.3) | 242 (1.6) | 71 (1.5) | 20 (1.7) | 7 (1.7) | 3 (2.4) | 0.001 |
| Bleeding Disorder, n (%) | 557 (11.7) | 4222 (15.9) | 2875 (19.5) | 1066 (22.0) | 284 (23.5) | 97 (23.6) | 24 (19.4) | <0.001 |
| Transfusion, n (%) | 255 (5.4) | 1167 (4.4) | 555 (3.8) | 202 (4.2) | 57 (4.7) | 16 (3.9) | 6 (4.8) | <0.001 |
| Hematocrit (mean ± deviation) | 33.9 ± 5.2 | 34.7 ± 5.2 | 35.5 ± 5.3 | 35.5 ± 5.3 | 35.6 ± 5.4 | 35.3 ± 5.4 | 35.2 ± 4.4 | <0.001 |
| Hypoalbunrinenria, n (%) | 624 (19.4) | 2355 (13.7) | 1200 (12.7) | 409 (13.2) | 106 (13.6) | 39 (14.5) | 11 (13.8) | <0.001 |
| Missing Data, n (%) | 1522 (32.1) | 9435 (35.4) | 5312 (36.0) | 1743 (36.0) | 428 (35.4) | 142 (35.6) | 44 (35.5) | <0.001 |
| Non-Fenroral Neck Fracture, n (%) | 2133 (45.0) | 11273 (42.4) | 6340 (42.9) | 2284 (47.1) | 618 (51.2) | 222 (54.0) | 57 (46.0) | <0.001 |
| Death within 30 days, n (%) | 439 (9.3) | 1831 (6.9) | 746 (5.1) | 222 (4.6) | 62 (5.1) | 19 (4.6) | 11 (8.9) | <0.001 |