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. Author manuscript; available in PMC: 2009 Oct 5.
Published in final edited form as: Arthritis Rheum. 2009 May;60(5):1311–1316. doi: 10.1002/art.24431

Table 1.

uSpA Subjects
(n=26)
Osteoarthritis
Controls (n=167)
Mean Age (range) 48.4 years (22-70) 43.3 (21-74)
Gender 16 males; 10
females
95 males, 72 females
Race 19 Caucasian
6 African American
1 Hispanic
125 Caucasian
25 African American
7 Hispanic
5 Asian
5 unknown
Mean Disease Duration (range) 9.1 years (0.5-36 yr) 1.1 years (0.1-2 yr)
N=70
HLA-B27 Positive 4 (16%) TNP

N/A: not applicable

TNP: test not performed