Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 1 Patient characteristics among surgically treated ankle fracture patients by admission status before propensity score matching
From: Open treatment of ankle fracture as inpatient increases risk of complication
Inpatient | Outpatient | p value | |
|---|---|---|---|
(N = 3885) | (N = 3498) | ||
Patient demographics | |||
Age (years), median (IQR) | 56 (41–69) | 45 (31–57) | <0.001 |
ASA class, median (IQR) | 2 (2–3) | 2 (1–2) | <0.001 |
Body mass index (kg/m2), median (IQR) | 29.8 (26.0–34.8) | 28.8 (25.4–33.4) | <0.001 |
Male, N (%) | 1383 (35.6) | 1700 (48.6) | <0.001 |
Smoker, N (%) | 874 (22.5) | 1033 (29.5) | <0.001 |
Preoperative characteristics | |||
Weight loss > 10% in last 6 months, N (%) | 6 (0.2) | 2 (0.1) | 0.205 |
Diabetic, N (%) | 645 (16.6) | 250 (7.2) | <0.001 |
Dyspnea, N (%) | <0.001 | ||
No | 3687 (94.9) | 3408 (97.4) | |
With moderate exertion | 179 (4.6) | 86 (2.5) | |
At rest | 19 (0.5) | 4 (0.1) | |
Use of steroids, N (%) | 100 (2.6) | 40 (1.1) | <0.001 |
Bleeding disorder, N (%) | 222 (5.7) | 60 (1.7) | <0.001 |
On dialysis, N (%) | 39 (1.0) | 3 (0.1) | <0.001 |
Functional status, N (%) | <0.001 | ||
Independent | 3490 (89.8) | 3403 (97.3) | |
Partially dependent | 378 (9.7) | 93 (2.7) | |
Totally dependent | 17 (0.4) | 2 (0.1) | |
History of COPD, N (%) | 189 (4.9) | 51 (1.5) | <0.001 |
History of CHF, N (%) | 35 (0.9) | 6 (0.2) | <0.001 |
Disseminated cancer, N (%) | 13 (0.3) | 2 (0.1) | 0.008 |
Operative characteristics | |||
CPT code, N (%) | <0.001 | ||
27766 | 188 (4.8) | 282 (8.2) | |
27784 | 74 (1.9) | 46 (1.3) | |
27792 | 878 (22.6) | 1298 (37.1) | |
27814 | 1494 (38.5) | 1014 (29.0) | |
27822 | 838 (21.6) | 517 (14.8) | |
27823 | 260 (6.7) | 109 (3.1) | |
27829 | 153 (3.9) | 229 (6.6) | |
Length of surgery (min), median (IQR) | 70 (50–99) | 62 (44–85) | <0.001 |
Propensity score, median (IQR) | 0.43 (0.27–0.55) | 0.56 (0.46–0.67) | <0.001 |