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 | |