Estimating Morbidity Rates Based on Routine Electronic Health Records in Primary Care: Observational Study

Mark MJ Nielen   ^{1, 2} , PhD ;   Inge Spronk   ¹ , MSc ;   Rodrigo Davids   ¹ , BSc ;   Joke C Korevaar   ¹ , PhD ;   René Poos   ² , MSc ;   Nancy Hoeymans   ² , PhD ;   Wim Opstelten   ³ , MD, PhD ;   Marianne AB van der Sande   ^{4, 5} , PhD ;   Marion CJ Biermans   ⁶ , PhD ;   Francois G Schellevis   ¹ , MD, PhD ;   Robert A Verheij   ¹ , PhD

¹ Netherlands Institute for Health Services Research, Utrecht, Netherlands, The

² Centre for Health and Society, National Institute for Public Health and the Environment, Bilthoven, Netherlands, The

³ Dutch College of General Practitioners, Utrecht, Netherlands, The

⁴ Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands, The

⁵ Julius Center for Health Sciences and Primary Care, Julius Global Health, Utrecht, Netherlands, The

⁶ Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, Netherlands, The