Predictors, Risk Factors and Outcome Following Major Surgery

This is a multicentre, prospective, observational cohort study. Consecutive patients, operated in six University Hospitals in Sweden will be recruited following major surgical procedure. The length of patient recruitment period will be 12 weeks. The length of follow up will be 360 days . The objectives are to determine the postoperative morbidity (during the hospital stay), the survival (0-360 days), to identify risk factors for adverse outcomes and to identify risk factors that may potentially be influenced by any intervention in the future. Amendments: 1. The follow-up of mortality is extended to 3 years of the cohort 2. The mortality of the background population at 30 and 90 Days will be analyzed 3. Validation of the Surgical Outcome Risk Tool in the study cohort and in the background population are planned