Winter- And Spring-onset Rheumatoid Arthritis Patients Have Worse 6 Month Outcomes Than Those With Summer Onset

When a patient's first symptoms of RA occur in winter, severity of RA (as measured by the modified Total Sharp Score, mTSS, assessment of erosion and joint space narrowing) was rated more severe at six months, compared to patients whose RA first became symptomatic in summer. Patients with first symptoms in spring showed poorer radiographic outcome compared to summer-onset patients.

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