Table 4. Partworth Utilities For Each Attribute Level And Relative Importance Of Attributes.

Attribute	Utility*	95% CI	Importance	95% CI
Health status			50.0%	(47.7% , 52.0%)
light disease	−0.483	(−0.500 , −0.465)
severe disease	0.483	(0.466 , 0.500)
Quality of life			24.7%	(22.9% , 26.3%)
no restrictions	−0.262	(−0.286 , −0.238)
restricted	0.047	(0.023 , 0.072)
severely restricted	0.215	(0.193 , 0.236)
Age			12.0%	(10.1% , 14.0%)
25 years	0.052	(0.021 , 0.082)
43 years	0.086	(0.058 , 0.113)
68 years	0.009	(−0.018 , 0.036)
87 years	−0.147	(−0.176 , −0.118)
Family status			7.9%	(6.0% , 9.8%)
single w/o dependents	0.0081	(−0.019 , 0.035)
single with dependents	0.086	(0.057 , 0.115)
couple w/o dependents	−0.067	(−0.095 , −0.039)
couple with dependents	−0.027	(−0.056 , 0.002)
Occupational status			4.6%	(2.9% , 6.2%)
high	−0.038	(−0.062 , −0.014)
medium	−0.013	(−0.037 , 0.011)
low	0.051	(0.029 , 0.073)
Unhealthy life style			0.8%	(0.04% , 2.3%)
yes	0.008	(−0.008 , 0.024)
no	−0.008	(−0.024 , 0.008)

^*Estimation by maximum likelihood method, SAS PROC PHREG, option ties = breslow ([32]).