Variable β Coefficient Bootstrap Bootstrap Bootstrap Bootstrap Bootstrap
Bias Standard Error Sig. (2-tailed) 95% Confidence interval (β) 95% Confidence interval (β)
Lower Upper
Age* 0.049 0.003 0.022 0.023 0.013 0.100
Urgent surgery 1.697 0.036 0.395 0.001 0.938 2.466
LVEF <40% 0.761 0.053 0.382 0.033 0.069 1.623 -
Constant -6.413 -0.275 1.544 0.001 -10.167 -3.952