Table 1

Source and description of samples used in the study

Sample source
Disease
Number
Female, no. (%)
Age (range)
anti-CCP positive, no. (%)
RF positive, no. (%)

Dr. P. Gregersen, plasma set 1
RA
30
28 (93)
72.6 (51 to 89)
20 (67)
24 (80)

Healthy
10





Dr. P. Gregersen, plasma set 2
IBD
20
13 (65)
46.4 (23 to 82)



JRA
20
16 (80)
37.3 (10 to 71)
6 (30)
6 (30)

PsA
14
11 (79)
52.6 (23 to 75)



PS
20
10(50)
55.3(22 to 86)



RA
20
19(95)
59.0(35 to 89)



SLE
20
13 (65)
51.3 (29 to 67)



CCP, cyclic-citrullinated peptides; RF, rheumatoid factor; RA, rheumatoid arthritis; IBD, inflammatory bowel disease; JRA, juvenile rheumatoid arthritis; PsA, psoriatic arthritis; PS, psoriasis; SLE, systemic lupus erythematosus.

Zhao et al. Arthritis Research & Therapy 2008 10:R94   doi:10.1186/ar2478