Intra-rater reliability of the 6-min walk test in people with liver cirrhosis

Table 6 Intraclass correlation coefficient (n = 19)

	Intraclass correlation1	95%CI		F test with true value 0
		Lower limit	Upper limit	Value	df1	df2	P value
Single measures	0.9692	0.904	0.989	77.365	18	18	< 0.001
Mean measures	0.9843	0.950	0.994	77.365	18	18	< 0.001

¹Intraclass correlation coefficients (type A) using an absolute agreement definition.

²The estimator is the same whether the interaction effect is present or not.

³This estimate is calculated assuming the interaction effect is absent because it cannot be estimated otherwise. Two-way mixed-effects model where people effects are random and measure effects are fixed. CI: Confidence interval; df: Degree of freedom.