Table 3.

Multivariate analysis of the Persian version of the Early Arthritis for Psoriatic Patients (P-EARP) questionnaire

Question	Odds ratio (OR)	Cl % 95	P-value
Do your joints hurt?	27.22	9.26-80.06	<0.001
Have you taken analgesics (anti-inflammatory) more thantwice a week for joint pain in the last 3 months?	57	7.21-450.60	<0.001
Do you wake up at night because of low back pain?	4.82	1.68-13.83	0.003
Do you feel stiffness in your hands for more than 30 minutes in the morning?	6.05	1.81-20.26	0.003
Do your wrists and fingers hurt?	23.47	7.67-72.94	<0.001
Do your wrists and fingers swell?	38.76	4.89-307.43	0.001
Does one finger hurt and swell for more than 3 days?	28.5	3.57-227.8	0.002
Does your Achilles tendon (tendon of the instep of the foot) swell?	15.17	1.92-675.82	0.001
Do your feet (from ankle to toe) or ankles hurt?	103.25	15.17-4289.19	<0.001
Does your elbow or hip joint hurt?	28	6.04-129.91	<0.001