Table 1.

Profile of treatment attributes and attribute levels used in conjoint analysis exercises

Treatment attributes	Level 1	Level 2	Level 3	Level 4
Treatment duration	5 minutes	15 to 30 minutes	1 hour	2 hours
Treatment frequency	Once every 3 months	Once every 2 weeks	Two times each week	Twice daily
Treatment cost	€0 per month	€50 per month	€100 per month	€200 per month
Treatment location	At home	At home and follow-up at local doctor’s	Outpatient clinic	Hospital for 3 weeks
Treatment delivery method	Topical	Tablets	Injection/intravenous infusion	Light therapy
Magnitude of beneficial effects	100% reduction	75% reduction	50% reduction	25% reduction
Duration of beneficial effects	1 year or more	6–8 months	3–5 months	2 weeks
Probability of side effects	100%	50%	10%	1%
Probability of beneficial effects	100%	80%	60%	40%
Reversibility of side effects	100%	80%	60%	40%
Side effects severity	Temporary, minor discomfort on skin	Constant, moderate discomfort on skin	Temporary, moderate side effects more than skin	Severe side effects more than skin