Table 1

Patients and controls for protein arrays and ELISA

Number

Age at diagnosis

Disease duration

Anti-CCP-positive

RF-positive

(years)

(years)

(%)

(%)


RA <1 year

144

54

0.8

70

68

RA >5 years

59

48

11

87

75

AS

88

34

10

1

nd

PsA

30

41

6

3

nd

SLE

21

37

8

5

nd

SSC

20

51

0.5

5

nd

Healthy

50

nd

nd

0

nd


ELISA, enzyme-linked immunosorbent assay; CCP, cyclic citrullinated peptide; RF, rheumatoid factor; RA, rheumatoid arthritis; AS, ankylosing spondylitis; PsA, psoriatic arthritis; SLE, systemic lupus erythematosus; SSC, systemic sclerosis; nd, not determined.

Charpin et al. Arthritis Research & Therapy 2013 15:R78   doi:10.1186/ar4255

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