Everyday-based general and visceral surgical case volume, outcome and quality assurance (real world data) in the elective and emergency setting of a university clinic in a consecutive patient cohort with regard to the season and the influence of the CoVID-19 pandemic

Interventions: Group 1: All patients who have undergone general and visceral surgical operations in the period from October 5th to October 19th, 2020 and April 6th to April 20th, 2021 will be included in the registration
- the general and specific complication rates (morbidity) and
- 30-day / hospital mortality (early postoperative outcome)
retrospectively evaluated and compared under the conditions of everyday surgical practice.
Primary outcome(s): 1. Early postoperative outcome (morbidity) through:
- general complication rate
- special complication rate
2. 30-day / hospital mortality
Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: health services research