Methods: We examined a quality measurement database containing de-identified cases from across Switzerland. All patients with a complete dataset treated between 2015 and 2021 were included. A case-control matching method (same age, comorbidity, sex, diagnosis, admission type, and insurance coverage) was used to evaluate the impact of pre-admission residence. The outcomes measured included complications during hospitalization, in-hospital mortality, and length of stay. Statistical significance was set at a p-value of