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

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

FACT-8D Dimension (d) FACT-G question FACT-G item FACT-G item level (l) and associated utility decrement (wdl)
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
  1. *For the Support dimension, take the better of the two items