Table 3.

Risk of referral from conditional logistic regression for patients referred to a dermatologist

Variable	Immediately referred at diagnosis	Referred >30 days after diagnosis
	Adjusted† Odds ratio (95% CI)	Adjusted† Odds ratio (95% CI)
Age	1.00 (0.98-1.00)	0.99 (0.98-1.00)
Males	1.07 (0.92-1.23)	0.87 (0.71-1.07)
Number of comorbidities in prior year	1.01 (0.94-1.08)	0.96 (0.87-1.06)
Number of GP visits in prior year	1.14 (1.08-1.20)*	1.87 (1.73-2.01)*
Psoriatic arthritis at index	1.16 (0.62-2.19)	1.15 (0.61-2.16)
No psoriasis-related prescription at index	Reference	NA
Corticosteroid prescription at index	1.56 (1.26-1.92)*	NA
Vitamin D3 analogue prescription at index	1.84 (1.50-2.25)*	NA
Tar & tar combination prescription at index	2.00 (1.45-2.76)*	NA
Non-biologic systemic therapy at index	0.30 (0.11-0.88)*	NA
No psoriasis-related prescription in 30 days prior to referral	NA	Reference
Corticosteroid prescription in 30 days prior to referral	NA	2.43 (1.45-4.07)*
Vitamin D3 analogue prescription in 30 days prior to referral	NA	4.67 (2.78-7.84)*
Tar & tar combination prescription in 30 days prior to referral	NA	1.95 (1.02-3.75)*
Non-biologic systemic therapy in 30 days prior to referral	NA	0.20 (0.05-0.90)*
Number of psoriasis-related prescriptions in 30 days prior to referral	NA	0.85 (0.31-1.17)

†Adjusted for age, gender, number of comorbidities, psoriatic arthritis diagnosis, and psoriasis-related prescriptions at index; NA not applicable.

*P<0.05.