Table 6.

Variance components analysis and intraclass correlation coefficients of country and panel agreements with three valuation methods.

	Visual analogue scale (15 disease stages)	Visual analogue scale (9 disease stages)	Time trade-off (9 disease stages)	Person trade-off (9 disease stages)
Random-effects	Proportion of total variance
Subject nested within panel*	4.3%	5.4%	9.8%	16.4%
Panel nested within country	0,0	0,0	0.7%	2.7%
Country	0.7%	0.1%	1.2%	3.9%
Disease	66.5%	65.4%	61.2%	36.7%
Disease effect crossed with:
- panel nested within country	0.8%	1.3%	0.4%	0.3%
- country	1.9%	1.8%	1.8%	6.9%
Residual	25.8%	26.0%	24.9%	33.2%
	Intraclass correlation coefficient of country agreement**
	0.72 (0.65–0.77)	0.72 (0.70–0.74)	0.72 (0.69–0.75)	0.56 (0.52–0.62)
	Intraclass correlation coefficient of panel agreement**
	0.73 (0.67–0.79)	0.73 (0.71–0.75)	0.74 (0.72–0.77)	0.64 (0.58–0.68)

* Two types of panel either with healthcare professionals or not ** 95% bootstrap confidence intervals estimated on 100 independent random samples dependend from country and panel type of the 232 individuals