Table 2.

Clinical features of patients with psoriasis and psoriatic arthritis

Variables	Patients without arthritis (N = 41)		Patients with arthritis (N = 116)		P-value*
	n	%	n	%
Diabetes:
Present	7	19.4	29	80.6	0. 311
Absent	34	27.9	88	72.1
Hypertension:
Present	10	22.7	34	77.3	0.566
Absent	31	27.2	83	72.8
Coronary disease:
Present	4	22.2	14	77.8	0.702
Absent	37	26.4	103	73.6
Smoking:
Present	10	26.3	28	73.7	0.953
Absent	31	25.8	89	74.2

^*Pearson χ².