Table 2.
Investigation of possible predictors for mortality after cardiac surgery
| Variable | Category | OR | 95% CI | p valueh |
|---|---|---|---|---|
| Agea | Linear | 1.08 | [1.03, 1.12] | 0.001 |
| Sexb | Male | 1 | [1.00, 1.00] | 0.03 |
| Female | 1.46 | [0.77, 2.79] | ||
| EF [%]c | 25–45 | 1 | [1.00, 1.00] | 0.0003 |
| 46–64 | 0.19 | [0.07, 0.57] | ||
| 65 | 0.3 | [0.16, 0.58] | ||
| EuroScored | 0–2 | 1 | [1.00, 1.00] | < 0.001 |
| 3–5 | 2.05 | [0.41, 10.17] | ||
| > 6 | 13.25 | [3.15, 55.81] | ||
| Creatinine [mg/dl]e | < 1.2 | 1 | [1.00, 1.00] | < 0.001 |
| 1.2–2.1 | 5.6 | [2.67, 11.76] | ||
| > 2.1 | 13.09 | [4.66, 36.81] | ||
| IL-6 [pg/ml]f | Q1 (< 102) | 1 | [1.00, 1.00] | < 0.001 |
| Q2 (102–165) | 1.51 | [0.25, 9.09] | ||
| Q3 (166–256) | 2.01 | [0.37, 11.02] | ||
| Q4 (257–421) | 2.03 | [0.37, 11.11] | ||
| Q5 (> 421) | 12.6 | [2.96, 53.55] | ||
| CPB [min]g | 2.3 | 1.66, 3.15 | < 0.001 |
Logistic regression model investigating possible predictors for death (yes/no) after cardiac surgery. Only results from the univariable models are displayed
EF ejection fraction, CPB cardiopulmonary bypass, OR odds ratio, CI confidence interval
aAge is analysed as linear variable
bThe reference category are male
cEF displayed in quintiles (resulting in 3 groups), reference category are values 45
dEuroScore is analysed in three groups according to guidelines: mild/moderate/severe risk. The reference category is the lowest score
eCreatinine is displayed in three groups. The reference category are lowest values
fIL-6 is displayed in quintiles. The reference category is the first quintile
gCPB. Due to the low (missing) number of deaths in the lower quintiles, overall OR is displayed
hp value: from likelihood ratio test