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Supplementary Table 1 - Criteria for ASA, CEPOD and BUPA scoring modified from Sutton et al 17. The Surgical Risk Scale Score (SRS) is calculated for each procedure by adding the Confidential Enquiry into Peri-operative Death (CEPOD), the American Society of Anesthesiologists (ASA) and the British United Provident Association scores. Modified from Sutton et al21
Supplementary Table 2 – Pre-operative diagnoses in Test Dataset
Supplementary Table 3 – Common co-morbidities in Test Dataset.
Supplementary Table 4 – Univariate analysis demonstrating the ability of N/L ratio to predict outcome. Dataset A
Supplementary Table 5 – Univariate analysis demonstrating the ability of N/L ratio to predict outcome. Dataset B