Table 1 Patient characteristics, stratified by time-to-surgery
From: The effect of time-to-surgery on outcome in elderly patients with proximal femoral fractures
Group | I | II | III | p-value (group comparison) |
|---|---|---|---|---|
Time from fracture to surgery | ≤ 12 h | > 12 h to ≤ 36 h | > 36 h | |
Cases (total = 2916) | n = 802 | n = 1191 | n = 923 | |
Female (2324; 79.7%) n (%) | 654 (81.6) | 953 (80.0) | 717 (77.7) | 0.13 |
Age in years (mean, std) interquartile range | 82.4 (7.5) | 82.4 (7.5) | 81.5 (7.2) | 0.009 (I/II: n.s.; I/III: 0.04; II/III: 0.01) |
77.2–88.8 | 77.3–88.5 | 76.8–87.2 | ||
Patients ≥ 85 years n (%) | 308 (38.4) | 455 (38.2) | 289 (31.3) | 0.001 |
ASA classificationA | ||||
ASA I/II n (%) | 324 (40.4) | 454 (38.3) | 298 (32.3) | |
ASA III n (%) | 447 (55.7) | 685 (57.7) | 554 (60.1) | |
ASA IV/V n (%) | 31 (3.9) | 48 (4.0) | 70 (7.6) | < 0.001 |
Body mass index (kg/m2) | ||||
< 25 | 462 (60.7) | 669 (60.5) | 544 (62.6) | |
25–29.9 | 235 (30.9) | 340 (30.8) | 251 (28.9) | |
≥ 30 | 64 (8.4) | 96 (8.7) | 74 (8.5) | 0.88 |
Smoking status | ||||
Non-smoker | 676 (90.6) | 981 (89.2) | 759 (88.1) | |
Smoker | 70 (9.4) | 119 (10.8) | 103 (11.9) | 0.25 |
Arterial hypertension | ||||
No | 256 (32.6) | 363 (30.9) | 288 (31.5) | |
Yes | 530 (67.4) | 812 (69.1) | 625 (68.5) | 0.74 |
Diabetes mellitus | ||||
No | 594 (75.7) | 918 (78.4) | 674 (74.6) | |
Yes | 191 (24.3) | 253 (21.6) | 230 (25.4) | 0.10 |
Myocardial infarction | ||||
No | 701 (93.0) | 1016 (91.4) | 788 (91.7) | |
Yes | 53 (7.0) | 96 (8.6) | 71 (8.3) | 0.44 |
PAOD B | ||||
No | 595 (80.7) | 872 (78.4) | 673 (77.4) | |
Yes | 142 (19.3) | 240 (21.6) | 196 (22.6) | 0.26 |
Stroke | ||||
No | 640 (86.5) | 949 (85.8) | 716 (82.9) | |
Yes | 100 (13.5) | 157 (14.2) | 148 (17.1) | 0.08 |
COPD C | ||||
No | 658 (87.0) | 976 (86.5) | 780 (88.3) | |
Yes | 98 (13.0) | 153 (13.5) | 103 (11.7) | 0.45 |
Malignancy | ||||
No | 641 (88.4) | 975 (90.8) | 764 (89.2) | |
Yes | 84 (11.6) | 99 (9.2) | 93 (10.8) | 0.24 |
Creatinine > 2 mg/dl | ||||
No | 706 (91.9) | 1027 (90.5) | 799 (90.0) | |
Yes | 62 (8.1) | 108 (9.5) | 89 (10.0) | 0.37 |
Type of admission | ||||
from own home | 612 (77.0) | 927 (78.0) | 677 (73.6) | |
from nursing institution | 152 (19.1) | 223 (18.8) | 177 (19.2) | |
from clinic/hospital | 31 (3.9) | 38 (3.2) | 66 (7.2) | < 0.001 |