Table 5

Coefficients and significance levels of factors included in the regression model to adjust for confounding factors.

EQ-5Dindex coefficient (adjusted R2 = 0.161, P<0.001)P-valueEQ-5Dvas coefficient (adjusted R2 = 0.233, P<0.001)P-value
Constant0.987<0.00186.918<0.001
Number of chronic diseases−0.079<0.001−5.914<0.001
Age (per year)−0.003<0.001−0.174<0.001
Smoker−0.086<0.001−6.363<0.001
Higher education0.0330.0012.1560.002