Health and Quality of Life Outcomes

Table 3 Goodness-of-fit results for mapping FIQR scores onto multi attribute utilities

From: “Fibromyalgia and quality of life: mapping the revised fibromyalgia impact questionnaire to the preference-based instruments”

PANEL A
Instruments	N	Method	Mean Utility	Min Utility	Max Utility	MAE	RMSE	R-squared
AQoL-8D	177	Observed	0.465	0.155	0.945	-	-
		OLS	0.465	0.213	0.778	0.097	0.124	0.465
		Gamma GLM	0.465	0.267	0.866	0.095	0.123
15D	192	Observed	0.688	0.391	1.000	-	-
		OLS	0.688	0.487	0.931	0.069	0.087	0.507
		Gamma GLM	0.688	0.510	0.967	0.069	0.087
EQ-5D-5 L	191	Observed	0.490	−0.480	1.000	-	-
		OLS	0.490	−0.079	0.819	0.138	0.174	0.579
		Gamma GLM	0.490	0.011	0.870	0.137	0.174
SF-6D	141	Observed	0.561	0.345	1.000	-	-
		OLS	0.561	0.411	0.737	0.063	0.079	0.468
		Gamma GLM	0.561	0.428	0.756	0.063	0.079
PANEL B
Instruments	N	Method	Mean Utility	Min Utility	Max Utility	MAE	RMSE	R-squared
AQoL-8D	177	Observed	0.465	0.155	0.945	-	-
		OLS	0.465	0.228	0.787	0.097	0.123	0.480
		Gamma GLM	0.465	0.275	0.876	0.096	0.122
15D	192	Observed	0.688	0.391	1.000	-	-
		OLS	0.688	0.507	0.950	0.071	0.088	0.492
		Gamma GLM	0.688	0.511	0.979	0.068	0.086
EQ-5D-5 L	191	Observed	0.490	−0.480	1.000	-	-
		OLS	0.490	−0.081	0.836	0.138	0.175	0.573
		Gamma GLM	0.490	0.010	0.890	0.137	0.176
SF-6D	141	Observed	0.561	0.345	1.000	-	-
		OLS	0.561	0.410	0.737	0.063	0.079	0.472
		Gamma GLM	0.561	0.427	0.756	0.063	0.079

Panel A: FIQR, Squared-FIQR, Age
Panel B: FIQR function domain; FIQR overall impact domain; FIQR symptom domain; Squared FIQR function domain; Squared FIQR overall impact domain; Squared FIQR symptom domain; Age. Gamma GLM: Generalized linear model Gamma log-link

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ISSN: 1477-7525

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