Table 2.

Clinical characteristics of psoriasis and psoriasis arthritis.

	Psoriasis	PsA	Odds ratio	P-value
Total number	114	29
Sex
Male	75	16	1.56	0.289
Female	39	13
Age
< 60	52 (45.6%)	21 (72.4%)	0.32	0.009
> 60	62 (54.4%)	8 (27.6%)
Past history
DM	19 (17.1%)	3 (10.7%)	0.58	0.407
HT	36 (32.4%)	9 (32.1%)	0.99	0.977
Laboratory examination
UA ≧7	25 (30.1%)	4 (19.1%)	0.546	0.312
< 7	58 (69.9%)	17 (80.9%)
Ca ≧10	14 (16.1%)	1 (4.2%)	0.227	0.130
< 10	73 (83.9%)	23 (95.8%)
Pest score
2 <	90 (78.9%)	2 (6.9%)	50.63	< 0.0001
3 >	24 (21.1%)	27 (93.1%)

P-value was evaluated by Fisher exact test or Chi-square test.