Table 1.

Attributes and levels for the choice tasks.

Attributes	Description to patients	Levels and Level description		Abridged general view
Progression-free survival	It refers to the time from the start of treatment until the tumor appears to be further deteriorated; this study fixes the overall survival and gives a choice of progression-free survival over time.	High Medium Low	11 months 8 months 5 months
Disease control rate	The number of cases with remission and stable lesions after treatment accounted for the number of cases that could be evaluated.	High Medium Low	90% 75% 60%
Rash	Treatments can cause a varying degrees rash for as long as you take the treatment.	None Mild Moderate	No rash <1/10 of the body more than 1/3 of the body
Nausea and vomiting	Treatments can cause nausea and vomiting as long as you take the treatment.	Mild Moderate Severe	1 time in 24 h 2–5 times in 24 h more than 6 times in 24 h
Weakness and fatigue	When you take the treatment you may feel even weaker or more tired.	Mild Moderate Severe	It is difficult to do physical exercises such as climbing stairs or running. Can't work and take care of yourself. You need to remain in bed
Cost	How much will you pay for the treatment.	High Medium Low	5 ten thousand per months 2.5 ten thousand per months 1 ten thousand per months
Mode of administration	In general, treatments can be administered by infusion or taken as pills.	Infusion Oral