The FACT-8D, a new cancer-specific utility algorithm based on the Functional Assessment of Cancer Therapies-General (FACT-G): a Canadian valuation study

Table 5 FACT-8D descriptive system: how the dimensions and levels map to the 9 component FACT-G items, and associated Canadian utility decrements

FACT-8D Dimension (d) FACT-G question	FACT-G item	FACT-G item level (l) and associated utility decrement (w_dl)
FACT-8D Dimension (d) FACT-G question	FACT-G item	Level 1 BEST	Level 2	Level 3	Level 4	Level 5 WORST
Pain	GP4	Not at all	A little bit	Somewhat	Quite a bit	Very much
I have pain		0	0	− 0.077	− 0.187	− 0.384
Fatigue (lack of energy)	GP1	Not at all	A little bit	Somewhat	Quite a bit	Very much
I have a lack of energy		0	− 0.054	− 0.075	− 0.144	− 0.164
Nausea	GP2	Not at all	A little bit	Somewhat	Quite a bit	Very much
I have nausea		0	− 0.099	− 0.149	− 0.162	− 0.298
Sleep	GF5	Not at all	A little bit	Somewhat	Quite a bit	Very much
I am sleeping well		0	0	0	− 0.077	− 0.077
Work	GF1	Very much	Quite a bit	Somewhat	A little bit	Not at all
I am able to work (include work at home)		0	− 0.057	− 0.090	− 0.090	− 0.231
Support*	GS2, GS3	Very much	Quite a bit	Somewhat	A little bit	Not at all
I get emotional support from my family and support from my friends		0	− 0.022	− 0.022	− 0.120	− 0.195
Sadness	GE1	Not at all	A little bit	Somewhat	Quite a bit	Very much
I feel sad		0	0	− 0.127	− 0.127	− 0.185
Worry my health will get worse	GE6	Not at all	A little bit	Somewhat	Quite a bit	Very much
I worry that my condition will get worse		0	− 0.097	− 0.097	− 0.097	− 0.118

ISSN: 1477-7525