Psychometric Evaluation of the Revised Michigan Diabetes Knowledge Test (V.2016) in Arabic: Translation and Validation

Table 3

Intraclass correlation coefficient (ICC).

	Intraclass correlatio	95% confidence interval		test with true value 0
		Lower-bound	Upper-bound	Value	df1	df2	Sign
Single measures		0.573	0.920	13.418	33	33	0.000
Average measures		0.729	0.958	13.418	33	33	0.000

Note. Two-way mixed-effects model where people effects are random and measures effects are fixed.
estimator is the same whether the interaction effect is present or not.
A ICCs using an absolute agreement definition.
achieve an estimate, this number is computed assuming the interaction effect is absent.