Table 1.
Univariate analysis of surgically relevant characteristics in the under 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 (%) | 1505 (7.9) | 7751 (40.9) | 5447 (28.7) | 2613 (13.8) | 1002 (5.3) | 510 (2.7) | 128 (0.7) | |
| Age (mean ± deviation) | 65.5 (6.2) | 65.9 (6.3) | 66.6 (6.0) | 66.6 (5.9) | 66.3 (5.9) | 65.4 (6.0) | 64.3 (6.3) | <0.001 |
| Male, n (%) | 404 (26.8) | 2847 (36.7) | 2336 (42.9) | 1060 (40.6) | 324 (32.3) | 143 (28.0) | 26 (20.3) | <0.001 |
| Diabetes, n (%) | 82 (5.5) | 656 (8.5) | 710 (13.0) | 549 (21.0) | 272 (27.2) | 145 (28.4) | 34 (26.6) | <0.001 |
| Smoking, n (%) | 795 (52.8) | 2727 (35.2) | 1248 (22.9) | 500 (19.1) | 160 (16.0) | 87 (17.1) | 28 (21.9) | <0.001 |
| Dyspnea, Exertion, n (%) | 142 (9.4) | 463 (6.0) | 319 (5.9) | 180 (6.9) | 86 (8.6) | 50 (9.8) | 21 (16.4) | <0.001 |
| Dyspnea, Rest, n (%) | 39 (2.6) | 116 (1.5) | 50 (0.9) | 34 (1.3) | 18 (1.8) | 14 (2.8) | 2 (1.6) | |
| Limited Function, n (%) | 172 (11.6) | 817 (10.6) | 534 (9.9) | 238 (9.2) | 113 (11.4) | 57 (11.3) | 20 (15.6) | <0.001 |
| Dependent Function, n (%) | 29 (2.0) | 168 (2.2) | 78 (1.4) | 34 (1.3) | 15 (1.5) | 9 (1.8) | 0 (0) | |
| Missing Function, n (%) | 16 (1.1) | 53 (0.7) | 36 (0.7) | 14 (0.5) | 9 (0.9) | 6 (1.2) | 0 (0) | 0.285 |
| Chronic Pulmonary Disease, n (%) | 382 (25.4) | 1086 (14.0) | 575 (10.6) | 308 (11.8) | 157 (15.7) | 90 (17.7) | 24 (18.8) | <0.001 |
| Fieart Failure, n (%) | 27 (1.8) | 134 (1.7) | 121 (2.2) | 81 (3.1) | 55 (5.5) | 31 (6.1) | 5 (3.9) | <0.001 |
| Hypertension, n (%) | 612 (40.7) | 3726 (48.1) | 3231 (59.3) | 1775 (67.9) | 737 (73.6) | 389 (76.2) | 98 (76.6) | <0.001 |
| Hemodialysis, n (%) | 27 (1.8) | 245 (3.2) | 207 (3.8) | 96 (3.7) | 46 (4.6) | 19 (3.7) | 4 (3.1) | <0.001 |
| Bleeding Disorder, n (%) | 142 (9.4) | 852 (11.0) | 736 (13.5) | 409 (15.7) | 179 (17.9) | 94 (18.4) | 13 (10.2) | <0.001 |
| Transfusion, n (%) | 78 (5.2) | 256 (3.3) | 123 (2.3) | 61 (2.3) | 29 (2.9) | 22 (4.3) | 2 (1.6) | <0.001 |
| Hematocrit (mean ± deviation) | 34.3 ± 5.7 | 35.7 ± 5.4 | 36.6 ± 5.4 | 36.8 ± 5.4 | 36.5 ± 5.4 | 36.0 ± 5.8 | 36.1 ±5.3 | <0.001 |
| Hypoalbuminemia, n (%) | 283 (26.6) | 836 (16.4) | 513 (14.4) | 228 (13.4) | 95 (14.4) | 55 (16.1) | 17 (20.0) | <0.001 |
| Missing Data, n (%) | 441 (29.3) | 2650 (34.2) | 1894 (34.8) | 912 (34.9) | 342 (34.1) | 168 (32.9) | 43 (33.6) | 0.006 |
| Non-Femoral Neck Fracture, n (%) | 712 (47.3) | 3093 (39.9) | 2141 (39.3) | 1149 (44.0) | 498 (49.7) | 275 (53.9) | 69 (53.9) | <0.001 |
| Death within 30 days, n (%) | 55 (3.7) | 165 (2.1) | 97 (1.8) | 48 (1.8) | 20 (2.0) | 19 (3.7) | 1 (0.8) | <0.001 |