Table 1
Clinical characteristics of study groups
Characteristics
Rheumatoid arthritis
Spondylo-arthritis
Osteoarthritis
Normal subjects
(n = 10)
(n = 10)
(n = 10)
(n = 8)
*p<0.05.
Age (years), mean (SD)
61.0 (15.5)
49.1 (17.5)
66 (10.4)
34.4 (10.4)*
Male:female ratio
4:6
5:5
6:4
6:2