Table 2. Determination of minimum sample size requirement for performing intra-class correlation test.

Number of observations	R0	R1	No.
2	0.0	0.2	152
		0.3	66
		0.4	36
		0.5	22
		0.6	15
		0.7	10

Number of total observations which are designated as 2 refers to the observations for the purpose of performing a test-retest reliability.

R₀ refers to value of intra-class coefficient in the null hypothesis.

R₁ refers to value of intra-class coefficient in the alternative hypothesis.