Test-retest reliability was analyzed using intraclass correlation coefficients ( ICC ) between baseline and end of season data and demonstrated high test-retest reliability, supporting findings of previous studies showing high reliability of the K-D Test.
12.
The " intraclass correlation " is commonly used to quantify the degree to which individuals with a fixed degree of relatedness ( e . g . full siblings ) resemble each other in terms of a quantitative trait ( see heritability ).