A comparison of EQ-5D index scores using the UK, US, and Japan preference weights in a Thai sample with type 2 diabetes

Table 7 Convergent validity of EQ-5D index scores using UK, US, and Japan preference weights

Variables	UK	US	Japan
Age (year)	-0.15^a	-0.02	-0.04
Gender (0 = male, 1 female)	-0.25**	-0.25**	-0.25**
Income (Baht/month)	0.17**	0.17**	0.19**
Duration of diabetes (year)	-0.14*	-0.15*	-0.14*
Body mass index (Kg/m²)	-0.15**	-0.15**	-0.19**
HbA1c level (%)	-0.17**	-0.17**	-0.20**
Number of diabetic complications	-0.40**	0.40**	-0.43**
CES-D scores†	-0.49**	-0.49**	-0.50**
VAS scores§	0.46**	0.46**	0.48**

^a The number in cells is Spearman's rho correlation coefficients between sociodemographic, clinical, and health status variables.
†Higher scores indicate more depressive symptoms.
§Higher scores indicate better health.
* p < 0.05, **p < 0.01

ISSN: 1477-7525