Table II.

Demographic parameters, potential exposures and risk factors.

Variables	Patients with psoriasis	Patients with psoriasis (%)	Patients without psoriasis	Patients without psoriasis (%)	P-value
Regions
Urban region	99	86.1	1,911	89.9	0.244
Rural region	16	13.9	214	10.1
Age (years)	57		47		0.001
Sex
Male	54	47.0	921	43.3	0.506
Female	61	53.0	1,204	56.7
BMI (kg/m2)
<30	85	73.9	1,637	77.0	0.509
≥30	30	26.1	488	23.0
Smoking status
Smoker	63	54.8	1,274	59.9	0.321
Non-smoker	52	45.2	852	40.1