Table 1.

Attributes and levels

Attribute	Levels
PASI 90 (percent of patients who achieve 90% skin clearance)	90% 80% 60% 40%
Stop rate for treatment (percentage of patients not completing treatment)	5% 10% 30% 40%
Bio-holiday availability (6-month break in treatment without worsening of symptoms)	Yes No
Risk of severe adverse events (including serious infections)	0.2% 0.5% 2.0% 5.0%
Injection frequency (number of injections in the first year of treatment)	6 injections 8 injections 16 injections 26 injections
Injection type	IV (intravenous) SC (subcutaneous)
Who provides injection?	Healthcare professional at clinic Self at home

PASI 90 90% reduction in the Psoriasis Area and Severity Index score