Table 1 Frequency of positive autoantibodies and mean serum levels of antibodies in the study groups.

CFFCP+ (%)

5 (4.5%)

4 (7.4%)^*

1 (1.7%)

5 (2.4%)^*

CFFCP mean±SD

0.12±0.06

0.15±0.7^{† ¶}

0.09±0.5^†

0.10±0.12^¶

CCP2+ (%)

2 (1.8%)

2 (3.7%)

0 (0%)

4 (1.9%)

CCP2 mean ±SD

15.62±4.25

16.2±5.97^‡

15.05±0.9^‡

16.9±2.78