Demographic and clinical baseline characteristics of the study population.

SD = Standard deviation, BMI = Body mass index$POSSUM: Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity, IQR = Interquartile Range, MMSE = Mini Mental State, EORTC = European Organisation of Research and Treatment of Cancer, ASA = American Society of Anesthesiologists, ECOG =: Eastern Cooperative Oncology Group§ CCS = Charlson Comorbidity Score& Mini Nutritional Assessment (MNA)/BMI€: Students’ t-test#: χ2-Test (Fisher’s Exact test)⌘: Mann Whitney U-TestDemographic and clinical baseline characteristics of the study population.