Patients | ||||||
---|---|---|---|---|---|---|
Demographic categories |
Age-similar
hospital personnel ( N = 19) |
Blood bank donors
( N = 53) |
Systemic
lupus erythematosus ( N = 17) |
Other
CTD ( N = 17) |
Early
RA ( N = 50) |
Late
RA ( N = 43) |
Age, mean (range)b | 48 (36 to 80) | N/A | 44 (25 to 59) | 50 (27 to 88) | 53 (30 to 80) | 60 (21 to 85) |
Sex, females/malesc | 7/12 | N/A | 17/17 | 15/17 | 36/14 | 31/12 |