Table 5. Correlation matrix for EQ-5D, Short-Form 6D and VAS.

Table	EQ-5D-UK	EQ-5D-JP	EQ-5D-USA	SF-6D	VAS
EQ-5D-UK	1.000				0.350*
EQ-5D-JP	0.999*	1.000			0.351*
EQ-5D-USA	1.000*	0.999*	1.000		0.349*
SF-6D	0.574*	0.575*	0.574*	1.000	0.417*

^*All correlations are significant at the 0.01 level (2-tailed). The validity coefficient is computed as Spearman's rank correlation coefficient. EQ-5D, EuroQol; EQ-VAS, EuroQol Visual Analog Scale; SF-6D, Short Form 6D. EQ-5D-UK, EQ-5D in UK weights; EQ-5D-JP, EQ-5D in Japan weights; EQ-5D-USA, EQ-5D in USA weights.