first pharmacy claim for Tofacitinib and then Etanercept or Adalimumab between Jan 2014 and Sep 2016 represents the index claim

First, select patients receiving ≥1 Tofacitinib pharmacy claim (Jan 2014-Sep 2016) who did not have a Tofacitinib claim anytime prior to index

Patients do have \>1 advanced therapy filled on index date

Physician diagnosis of Rheumatoid Arthritis (in any position) during the 1-year pre-index period, or on the index date

Age 18+ years at index

A Study to Evaluate Patient Characteristics and Treatment Patterns Among Rheumatoid Arthritis Patients