Measurement of health-related quality by multimorbidity groups in primary health care

Table 2 Multiple linear regression models that explain the EQ-5D-3 L utility score and EQ VAS

Variables	EQ 5D 3 L TTO score beta coefficient (95%CI)				EQ VAS beta coefficient (95%CI)
Variables	Model 1	Model 2	Model 3		Model 4
Intercept	0.95	0.93	0.99		80.32
Age	−0.004***
Gender			−0.10	**
MHS CRG
1. Healthy (control variable)
2. History of significant acute disease		−0.06	−0.05		−10.57	*
3. Single minor chronic disease		−0.12	−0.14	*	−14.49	**
4. Minor chronic diseases in multiple organ systems		−0.16*	−0.15	*	−13.87	**
5. Significant chronic disease		−0.18**	−0.20	**	−18.32	***
6. Significant chronic diseases in multiple organ systems		−0.35***	−0.36	***	−24.49	***
7. Dominant chronic disease in 3 or more organ systems		−0.33***	−0.35	***	−23.32	***
8. Dominant/Metastatic malignancy		−0.33***	−0.36	***	−28.65	***
9. Catastrophic		−0.44***	−0.47	***	−27.20	***
Adj. R²	0.04	0.17	0.21		0.15
F-test	14.76***	9.73***	9.72	***	7.88	***

MHS CRG: Main Health Status Clinical Risk Groups
TTO score: Time Trade-Off score
EQ VAS: EQ Visual Analogue Scale
*p < 0.05, **p < 0.01, ***p < 0.001 by chi-square for the difference in the proportion of respondents referring to any problem (moderate or severe problem) across the variables

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