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In page Cardiothoracic surgery:

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To assess the performance of surgical units and individual surgeons, a popular risk model has been created called the EuroSCORE. This takes a number of health factors from a patient and using precalculated logistic regression coefficients attempts to give a percentage chance of survival to discharge. Within the UK this EuroSCORE was used to give a breakdown of all the centres for cardiothoracic surgery and to give some indication of whether the units and their individual surgeons performed within an acceptable range. The results are available on the CQC website.[6] The precise methodology used has however not been published to date nor has the raw data on which the results are based.[citation needed]