You can try the system for yourself using interactive calculator and selecting "LOGISTIC" (available in six languages)

How to calculate the logistic EuroSCORE

Roques F, Michel P, Goldstone AR, Nashef SA. The logistic EuroSCORE. Eur Heart J. 2003 May;24(9):882-3

Using the same risk factors as the additive model, the logistic regression version of the score (the “logistic EuroSCORE”) can be calculated.  For a given patient, the “logistic EuroSCORE” which is the predicted mortality according to the logistic regression equation, can be achieved with the following formula:

Predicted mortality =   e (βo + åbi Xi) / 1+ e (βo + åbi Xi)

where

e is the natural logarithm  = 2.718281828...

βo is the constant of the logistic regression equation = -4.789594

βi is the coefficient of the variable Xi in the logistic regression equation provided in the table below.

Xi = 1 if a categorical risk factor is present and 0 if it is absent

For age, Xi = 1 if patient age < 60; Xi increase by one point per year thereafter;

hence  for age 59 or less Xi = 1, age 60 Xi = 2, age 61 Xi = 3, and so on.

Cardiologists and cardiac surgeons will be relieved to note that they do not have to face this complex calculation with every patient.

EuroSCORE (additive and logistic) can be calculated with ease using the online calculator on the EuroSCORE website.

Beta coefficients for the Logistic regression model of EuroSCORE in the 1995 pilot study

 Patient-related factors Beta Age Continuous 0.0666354 Sex female 0.3304052 Chronic pulmonary disease longterm use of bronchodilators or steroids for lung disease 0.4931341 Extracardiac arteriopathy any one or more of the following: claudication, carotid occlusion or >50% stenosis, previous or planned intervention on the abdominal aorta,limb arteries or carotids 0.6558917 Neurological dysfunction disease severely affecting ambulation or day-to-day functioning 0.841626 Previous cardiac surgery requiring opening of the pericardium 1.002625 Serum creatinine >200m micromol/L preoperatively 0.6521653 Active endocarditis patient still under antibiotic treatment for endocarditis at the time of surgery 1.101265 Critical preoperative state any one or more of the following: ventricular tachycardia or fibrillation or aborted sudden death, preoperative cardiac massage, preoperative ventilation before arrival in the anaesthetic room,preoperative inotropic support, intraaortic balloon counterpulsation or preoperative acute renal failure (anuria or oliguria<10 ml/hour) 0.9058132 Cardiac-related factors Beta Unstable angina rest angina requiring iv nitrates until arrival in the anaesthetic room 0.5677075 LV dysfunction moderate or LVEF30-50% 0.4191643 poor or LVEF <30 1.094443 Recent myocardial infarct (<90 days) 0.5460218 Pulmonary hypertension Systolic PA pressure>60 mmHg 0.7676924 Operation-related factors Beta Emergency carried out on referral before the beginning of the next working day 0.7127953 Other than isolated CABG major cardiac procedure other than or in addition to CABG 0.5420364 Surgery on thoracic aorta for disorder of ascending, arch or descending aorta 1.159787 Postinfarct septal rupture 1.462009

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