Table 1.

Exact wording of the attributes and levels used in the DCE.

Attribute	Definition	Levels
How the treatment is given to you	How the cancer treatment is given to you and the length of time each treatment takes.	This can either be: Infusion (Injection administered into your veins) that requires a hospital stay of 1 day (about 24 h) Infusion (Injection administered into your veins) that requires a hospital stay of half a day (about 12 h); Oral treatment (by swallowing), and no hospital stay is required.
Chance of surviving 5 years after starting this cancer treatment	The chance of still being alive 5 years after starting this cancer treatment.	This chance can either be: 10% -meaning that 10 people out of 100 people that started the treatment are still alive after 5 years, and 90 people died within those 5 years 20% -meaning that 20 people out of 100 people that started the treatment are still alive after 5 years, and 80 people died within those 5 years 40% -meaning that 40 people out of 100 people that started the treatment are still alive after 5 years, and 60 people died within those 5 years
Chance of long lasting skin problems	The chance that skin problems occur after treatment. This skin problem lasts at least a month and could be a rash, severe itching, bleeding and/or dryness	This chance can either be: 10% (10 out of 100)a 20%(20 out of 100)a 40% (40 out of 100)a
Chance of being extremely tired	This refers to feeling completely exhausted and lacking energy even after limited activities. It lasts as long as the treatment takes to be administered.	This chance can either be: 10% (10 out of 100)a 40% (40 out of 100)a 60% or (60 out of 100)a
Severity of hair loss	The type and amount of hair loss. It lasts as long as the treatment takes to be administered.	This can either be: no hair loss weakening/thinning of hair complete loss of hair