Table 3.

Inter-rater reliability of the EQ-5D

EQ-5D	% of exact agreement (n = 478)	Kappa-coefficient
		Overall (n = 478)	Self/spouse (n = 344)	Self/adult child (n = 95)
Mobility	74	0.49	0.51	0.34
Self-care	63	0.25	0.30	0.17
Usual activities	39	0.09	0.09	0.04
Pain/discomfort	58	0.25	0.20	0.38
Anxiety/depression	55	0.20	0.21	0.09
Intra-class correlation coefficient (95 % confidence interval)
Utility score	–	0.34 (0.28; 0.43)	0.36 (0.26; 0.45)	0.21 (0.13; 0.40)
VAS	–	0.22 (0.13; 0.30)	0.19 (0.10; 0.30)	0.24 (0.11; 0.43)