Table 3 Discriminative capacity and univariate analyses for EQ-5D-5L and SF-6Dv2 utility among different sub-groups (N = 1,000)

BMI group

< 0.001

0.517 (0.327, 0.706)

< 0.001

0.383 (0.194, 0.571)

 I: 24 ≤ BMI < 26 (N = 406)

0.882 (0.165)

I > III***, I > IV***, II > III***, II > IV***

0.756 (0.153)

I > III**, I > IV**, II > III**, II > IV**

 II: 26 ≤ BMI < 28 (N = 271)

0.876 (0.160)

0.749 (0.137)

 III: 28 ≤ BMI < 30 (N = 151)

0.784 (0.248)

0.693 (0.191)

 IV: BMI ≥ 30 (N = 172)

0.794 (0.230)

0.694 (0.187)

Health status

< 0.001

1.717 (1.407, 2.023)

< 0.001

2.329 (1.989, 2.625)

 I: Excellent (n = 79)

0.986 (0.036)

I > III***, I > IV***, II > III***, II > IV***, III > IV***

0.915 (0.101)

I > II***, I > III***, I > IV***, II > III***, II > IV***, III > IV***

 II: Good (n = 314)

0.944 (0.086)

0.830 (0.103)

 III: Fair (n = 440)

0.846 (0.166)

0.707 (0.108)

 IV: Bad (n = 167)

0.622 (0.256)

0.540 (0.183)

Number of chronic diseases

< 0.001

1.885 (1.664, 2.105)

< 0.001

2.076 (1.850, 2.303)

 I: 0 (N = 410)

0.940 (0.112)

I > II**, I > III***, I > IV***, I > V***, II > III**, II > IV***, II > V***, III > V***, IV > V***

0.835 (0.116)

I > II***, I > III***, I > IV***, I > V***, II > III**, II > IV***, II > V***, III > V***, IV > V***

 II: 1 (N = 182)

0.892 (0.137)

0.743 (0.119)

 III: 2 (N = 169)

0.819 (0.147)

0.683 (0.118)

 IV: 3 (N = 96)

0.773 (0.202)

0.656 (0.114)

 V: ≥4 (N = 143)

0.630 (0.262)

0.548 (0.189)