Epidemiology of Perioperative Care in Sweden

The Epidemiology of Perioperative Care in Sweden (EPeCS) study is a registry-based, retrospective extensive analysis of the whole adult (≥18 years) surgical population in Sweden during six full years, 1 January 2015 - 31 December 2020. Patients are retrieved from the Swedish Perioperative Registry (SPOR) which has full national coverage of public healthcare. The study aspire to integrate pre-, peri- and postoperative components of the whole perioperative process as well as process, patient, anaesthesia and surgical factors. This allows for careful risk-adjustment and is a major strength of the project. This will require cross-matching data from several national quality registries. EPeCS will serve as a database to be used as the foundation for several substudies that are to be conducted (10 at the present moment). Specific study focuses and aims are described in the "Detailed Description" section below. The present study aims to provide a comprehensive audit of the surgical population in Sweden, and to identify factors that are of importance for outcome. The investigators aim to identify factors that will allow a better prediction of outcome, if they are modifiable, and if they are different for different lengths of follow-up. The ultimate goal is to provide hypotheses for directed therapies (eg. different types of anaesthesia), processes (eg. designated around-the-clock hip-fracture surgical teams), postoperative care (eg. extended PACU care instead of intensive care) in order to decrease suffering and increase cost-efficacy in Swedish healthcare.