Table 1.
Description of the characteristics of the surgical procedures according to the site and the period
| Variables | Total | North Site | South Site | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n= 5348 |
North Total n= 1117 |
01.01.2014 – 31.01.2017 n= 543 |
01.02.2017 – 30.06.2020 n= 574 |
P value |
South Total n= 4231 |
01.01.2014 – 31.01.2017 n= 1926 |
01.02.2017 – 30.06.2020 n= 2305 |
P value | ||
| Age in years, median (Q1-Q3) | 68 (60 – 76) | 64 (51 – 74) | 64 (51 – 74) | 64 (50 – 75) | 0.561 | 68 (61 – 76) | 69 (61 – 76) | 69 (61 – 76) | 0.441 | |
| Male gender, n(%) | 2364 (44.2) | 573 (51.3) | 276 (50.8) | 297 (51.7) | 0.760 | 1791 (42.3) | 830 (43.1) | 961 (41.7) | 0.358 | |
| CCI ,median (Q1-Q3) | 0 (0 – 1) | 0 (0 – 1) | 0 (0 – 1) | 0 (0 – 1) | 0.595 | 0 (0 – 1) | 0 (0 – 1) | 0 (0 – 1) | 0.014 | |
|
BMI in kg/m2 median (Q1-Q3) |
27.7 (23.3 – 32.47) | 27.2 (22.9 – 32.0) | 29.2 (24.9 – 32.6) | 27 (22.8 – 31.9) | 0.162 | 27.7 (23.4 – 32.7) | 28.0 (23.4 – 32.5) | 27.7 (23.4 – 32.7) | 0.832 | |
| Altemeier classification, n(%) | 1 | 5308 (99.3) | 1081 (96.8) | 524 (96.5) | 557 (97.0) | 0.611 | 4227 (99.9) | 1924 (99.9) | 2303 (99.9) | 0.857 |
| 2 | 40 (0.7) | 36 (3.2) | 19 (3.5) | 17 (3.0) | 4 (0.1) | 2 (0.1) | 2 (0.1) | |||
| ASA score, n (%) | n=4640 | n= 909 | n= 371 | n= 539 | 0.398 | n=3730 | n= 1622 | n= 2108 | < 0.001 | |
| 1 | 896 (19.3) | 197 (21.7) | 73 (20.6) | 124 (22.3) | 699 (18.7) | 340 (21.8) | 359 (16.5) | |||
| 2 | 2699 (58.2) | 451 (49.6) | 188 (53.1) | 264 (47.4) | 2248 (60.3) | 921 (59.0) | 1327 (61.2) | |||
| 3 | 1020 (22.0) | 246 (27.1) | 88 (24.9) | 158 (28.5) | 774 (20.8) | 295 (18.9) | 479 (22.1) | |||
| 4 | 24 (0.5) | 15 (1.6) | 5 (1.4) | 10 (1.8) | 9 (0.2) | 4 (0.3) | 5 (0.2) | |||
| Time between admission and the surgery in hours, median (Q1-Q3) | 17 (16 – 19) | 19 (17-22) | 19 (17 - 21) | 20 (18 – 23) | < 0.001 | 17 (16 – 19) | 17 (16 – 19) | 17 (16 – 19) | 0.218 | |
| Duration of surgery in minutes, median (Q1-Q3) | 68 (52 – 89) | 82 (62 – 114) | 77.5 (57 - 109) | 87 (66 – 120) | < 0.001 | 66 (50 – 83) | 64 (47 – 83) | 67 (53 - 82) | < 0.001 | |
|
Type of surgery, n (%) |
OS of the UEF | 20 (0.4) | 11 (0.98) | 3 (0.6) | 8 (1.4) | 0.089 | 9 (0.2) | 7 (0.4) | 2 (0.1) | 0.090 |
| Other OS | 393 (7.3) | 292 (26.1) | 149 (27.4) | 143 (24.9) | 101 (2.4) | 40 (2.1) | 61 (2.7) | |||
| Knee prostheses | 2458 (46.0) | 234 (20.9) | 127 (23.4) | 107 (18.6) | 2224 (52.6) | 998 (51.8) | 1226 (53.2) | |||
| Hip prostheses | 1938 (36.2) | 392 (35.1) | 185 (34.1) | 207 (36.1) | 1546 (36.5) | 733 (36.1) | 813 (35.3) | |||
| Revision of knee prosthesis | 190 (3.6) | 37 (3.3) | 17 (3.1) | 20 (3.5) | 153 (3.6) | 63 (3.3) | 90 (3.9) | |||
| Revision of hip prosthesis | 349 (6.5) | 151 (13.5) | 62 (11.4) | 89 (15.5) | 198 (4.7) | 85 (4.4) | 113 (4.9) | |||
| S. aureus SSI, n (%) | 30 (0.6) | 14 (1.3) | 10 (1.8) | 4 (0.7) | 0.086 | 16 (0.4) | 9 (0.5) | 7 (0.3) | 0.388 | |
| CCFM SSI, n (%) | 43 (0.8) | 21 (1.9) | 13 (2.4) | 8 (1.4) | 0.219 | 22 (0.5) | 12 (0.6) | 10 (0.4) | 0.394 | |
| All SSI, n (%) | 100 (1.9) | 54 (4.8) | 24 (4.4) | 30 (5.2) | 0.619 | 46 (1.1) | 18 (0.9) | 28 (1.2) | 0.381 | |
Legend: The p-values correspond to the comparisons of the periods before (01/01/2014–31/01/2017) and after (01/02/2017–30/06/2020), within the North site then the South site
ASA American Society of Anesthesiologists, BMI Body mass index, CCFM Cutaneous commensal flora microorganisms, OS Osteosynthesis, SSI Surgical site infection, UEF Upper end of the femur