Research Article
[Retracted] Analysis of Risk Factors for Rheumatoid Arthritis in Yunnan: A Small-Scale Case-Control Study
Table 2
Comparison of positive rates of AKA and APF between the RA patients and controls (n (%)).
| | RA patients (n = 249) | Controls (n = 149) | χ2 value | P value |
| Anti-CCP | Positive | 125 (50.20) | 8 (5.37) | 84.206 | <0.001 | Negative | 124 (49.80) | 141 (94.63) |
| AKA | Positive | 84 (33.73%) | 6 (4.03%) | 47.014 | <0.001 | Negative | 165 (66.27%) | 143 (95.97%) |
| APF | Positive | 108 (43.37%) | 9 (6.04%) | 62.599 | <0.001 | Negative | 141 (56.63%) | 140 (93.96%) |
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RA, rheumatoid arthritis; CCP, cyclic citrullinated peptide; AKA, antikeratin antibody; APF, antiperinuclear factor.
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