Table 2

‚ÄÉMean (SD) age and disease duration of patients with rheumatoid arthritis with primary total joint replacement of the knee and hip, according to year

YearPrimary TJR of the kneePrimary TJR of the hip
Age mean(SD)Disease duration,mean (SD)Age mean(SD)Disease duration,mean (SD)
TJR, total joint replacement.
198664 (9)17 (14)62 (14)15 (13)
198865 (14)20 (7)64 (8)19 (14)
199363 (10)16 (8)66 (14)15 (11)
199866 (9)14 (11)64 (10)18 (13)
200068 (11)15 (11)66 (10)13 (11)
200267 (9)15 (12)64 (14)17 (12)
200366 (10)17 (14)69 (9)18 (11)