Table 5: Frequencies of the different diagnoses obtained from patients with false positive RF and CCP antibodies. The results are expressed in percentages.

%

CCP

RF

RA

84

73

PROBABLE RA

8

3

POLYARTHRITIS

2

0

RIZARTROSIS

2

0

SJORGREN

2

3

LUMBALGIA

2

3

HAND ARTRALGY

0

7

CUTANEOUS LUPUS

0

3

KNEE PAIN GONALGIA

0

4

ARTROSIS

0

4