Variations in Patients’ Overall Assessment of Their Health Across and Within Disease Groups Using the EQ-5D Questionnaire: Protocol for a Longitudinal Study in the Swedish National Quality Registers

Fitsum Sebsibe Teni   ¹ , MSc, MPH ;   Ola Rolfson   ^{1, 2, 3} , MD, PhD ;   Nancy Devlin   ^{4, 5} , PhD ;   David Parkin   ^{5, 6} , PhD ;   Emma Nauclér   ³ , MSc ;   Kristina Burström   ^{1, 7, 8} , PhD ;   The Swedish Quality Register (SWEQR) Study Group   ⁹

¹ Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden

² Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

³ Swedish Hip Arthroplasty Register, Gothenburg, Sweden

⁴ Centre for Health Policy, University of Melbourne, Melbourne, Australia

⁵ Office of Health Economics, London, United Kingdom

⁶ City, University of London, London, United Kingdom

⁷ Equity and Health Policy Research Group, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden

⁸ Health Care Services, Region Stockholm, Stockholm, Sweden

⁹ See Acknowledgments