Table 3. Frequency of ANA in serum from PsA patients and healthy controls at dilutions 1: 160.

Biological feature	PsA pos 1: 160	Controls pos 1:160	OR	CI at 95%	p value
Number tested	n = 63	n = 91
Total	33/63 (52%)	21/91 (23%)	3.7	1.9–7.2	p<0.001
Women	26/46 (57%)	8/34 (23%)	4.2	1.6–11.2	p<0.01
Men	8/17 (47%)	12/55 (22%)	3.2	1.0–10.0	p<0.05