Table 2 Univariate predictors of DSWI in patients with BIMA grafts
Variable | Descriptive statistics | Risk statistics | ||||
|---|---|---|---|---|---|---|
Missing data (n) | No infect (n = 243) | DSWI (n = 21) | P- value | OR [95% CI] | P- value | |
BMI | 1 | 27.0 [24.4;30.0] | 30.1 [26.9;31.2] | 0.027 | 1.15 [1.03; 1.27] | 0.011 |
Diabetes | 2 | 39 (16.0%) | 7 (35.0%) | 0.058 | 2.82 [1.06; 7.51] | 0.038 |
Poor glycaemic control | 2 | 8 (3.31%) | 5 (23.8%) | 0.002 | 9.14 [2.68; 31.17] | < 0.001 |
PAD | 1 | 18 (7.41%) | 6 (28.6%) | 0.006 | 5.00 [1.73; 14.45] | 0.003 |
Leukocytes preop (%) | 1 | 7.10 [6,10; 8.30] | 8.80 [7.10; 10.5] | 0.002 | 1.44 [1.17; 1.76] | 0.001 |
Infection at another site | 1 | 24 (9.88%) | 7 (33.3%) | 0.006 | 4.56 [1.68; 12.41] | 0.003 |
Postoperative delirium | 1 | 12 (4.94%) | 5 (23.8%) | 0.006 | 6.02 [1.89; 19.12] | 0.002 |
Number of bypasses | 1 | 3.00 [2.00;3.00] | 4.00 [3.00;4.00] | 0.001 | 2.63 [1.45; 4.77] | 0.001 |
Aortic cross-clamp time (min) | 1 | 51.0 [42.0;64.0] | 63.0 [58.0;78.0] | 0.001 | 1.04 [1.02; 1.07] | 0.001 |
Acute kidney injury | 1 | 11 (4.53%) | 7 (33.3%) | < 0.001 | 10.55 [3.54; 31.38] | < 0.001 |
Prolonged (> 48 h) invasive ventilation | 1 | 10 (4.12%) | 5 (23.8%) | 0.003 | 7.28 [2.22; 23.86] | 0.001 |
Respiratory complications | 1 | 22 (9.05%) | 5 (23.8%) | 0.049 | 3.14 [1.05; 9.39] | 0.041 |
Tracheotomy | 6 | 4 (1.68%) | 5 (23.8%) | < 0.001 | 18.28 [4.47; 74.80] | < 0.001 |
Leukocytes second postop day (%) | 2 | 10.1 [8.55;12.0] | 11.8 [10.1;13.3] | 0.015 | 1.25 [1.08; 1.45] | 0.002 |
eGFR1 second postop day < 60 ml/min | 1 | 16 (6.58%) | 7 (33.3%) | 0.001 | 7.09 [2.51; 20.06] | < 0.001 |