Table 1 Overview of the characteristics of the nine National Quality Registries studied

Acute disease/short care episode

- Swedish National Forensic Psychiatric Registry

- Swedish National Registry of Gynecological Surgery

- Swedish Hernia Registry

Chronic disease/life-long follow-up

- Infectious Disease Registry HIV^a

- Swedish Registry of Congenital Heart Disease

- Swedish Follow-up Programme for Cerebral Palsy

- National Prostate Cancer Registry of Sweden^a

- Senior alert

- Swedish Palliative^aCare Registry