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Table 1 Characteristics of all included RA patients

From: Decrease in the incidence of total hip arthroplasties in patients with rheumatoid arthritis - results from a well defined population in south Sweden

N 2,164
Female 1,545 (71%)
Mean age at RA diagnosis (SD) 51.4 (16.7)
RA diagnosis in 1997 or earlier 1,481 (68.4%)
RA diagnosis after 1997 683 (31.6%)