Collection of antirheumatic medication data from both patients and rheumatologists shows strong agreement in a real-world clinical cohort: the Ontario Best Practices Research Initiative—a rheumatoid arthritis cohort

OBJECTIVES: The objective of the study was to examine the agreement between patient- and rheumatologist-reported antirheumatic medication (ARM) use in the Ontario Best Practices Research Initiative. STUDY DESIGN AND SETTING: We included adult patients who enrolled on or after September 1st 2010 and compared ARM use where rheumatologist visits and interviews occurred within 60 days of each other. Kappa statistic was used to measure agreement. We …