Table 3 Univariate and multivariate analysis for RBC transfusion (outcome 1)
Factor | Odds ratio (95% CI) | P value | Adjusted odds ratio | P value |
|---|---|---|---|---|
Gender (female vs. male) | 1.678 (1.325–2.126) | P < 0.001 | 1.536 (1.082– 2.053) | P = 0.004 |
Age (per year increase) | 1.017 (1.009–1.026) | P < 0.001 | 1.018 (1.009–1.027) | P < 0.001 |
Creatinine (per µmol/L increase) | 1.004 (1.002–1.005) | P < 0.001 | 1.006 (1.004–1.009) | P < 0.001 |
Respiratory disease ( yes vs. no ) | 1.183 (0.883–1.586) | P = 0.259 |  |  |
Dialysis (Yes vs No) | 3.596 (1.787–7.236) | P < 0.001 | 5.643 (1.305–24.398) | P = 0.021 |
Diabetes ( yes vs. no ) | 1.094 (0.870–1.376) | P = 0.442 |  |  |
Smoking (yes vs. no) | 0.866 (0.690–1.087) | P = 0.214 |  |  |
BMI (per kg/m2 increase) | 0.975 (0.956–0.994) | P = 0.010 | 0.991 (0.971–1.011) | P = 0.366 |
TBSA (per m2 increase) | 0.251 (0.150–0.419) | P < 0.001 | 0.353 (0.178–0.700) | P = 0.003 |
NYHA | Â | Â | Â | Â |
 Class 1 | 1.115 (0.895–1.390) | P = 0.330 |  |  |
 Class 2 | 0.869 (0.683–1.105) | P = 0.251 |  |  |
 Class 3 | 0.974 (0.742–1.279) | P = 0.851 |  |  |
 Class 4 | 1.140 (0.709–1.833) | P = 0.589 |  |  |
Preoperative Hb (per g/L increase) | 0.972 (0.965–0.978) | P < 0.001 | 0.978 (0.970–0.985) | P < 0.001 |
Antiplatelet use < 24 h ( yes vs. no ) | 1.039 (0.760–1.422) | P = 0.809 |  |  |
Anticoagulant use < 24 h ( yes vs. no ) | 1.476 (1.147–1.898) | P = 0.002 | 1.302 (0.999–1.701) | P = 0.053 |
Non valve/CABG (yes vs. no) | 1.641 (1.210–2.225) | P < 0.001 | 1.567 (1.133–2.164) | P = 0.007 |
Previous cardiothoracic intervention (yes vs. no) | 1.774 (1.353–2.325) | P < 0.001 | 1.563 (1.169–2.087) | P = 0.004 |
Presence of cardiogenic shock preoperatively (yes vs. no) | 3.645 (2.101–6.324) | P < 0.001 | 3.257 (1.801–5.882) | P < 0.001 |