TY - JOUR T1 - Z. Slim and S. Bernatsky reply JF - The Journal of Rheumatology JO - J Rheumatol SP - 781 LP - 781 DO - 10.3899/jrheum.200026 VL - 47 IS - 5 AU - ZEINAB SLIM AU - SASHA BERNATSKY Y1 - 2020/05/01 UR - http://www.jrheum.org/content/47/5/781.2.abstract N2 - Indeed, self-report is not a perfect method to ascertain rheumatoid arthritis (RA) cases. RA is not a well-defined disease from the perspective of a lay person; therefore, underreporting and/or overreporting are very possible in health surveys1. The objective of our study was to highlight the issue of misclassification error, which is inherent in both self-report and health administrative data. Given the problems with estimating RA prevalence using a single source of information (including self-report), we provide an analytical approach to obtain … Address correspondence to Dr. S. Bernatsky, Research Institute of the McGill University Health Centre, 5252 boul. de Maisonneuve Ouest, 3F.51 Montreal, Quebec H4A 3S5, Canada. E-mail: Sasha.bernatsky{at}mcgill.ca ER -