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. Author manuscript; available in PMC: 2016 Oct 15.
Published in final edited form as: J Biomech. 2015 Aug 7;48(13):3568–3576. doi: 10.1016/j.jbiomech.2015.07.024

Table 2. Intraclass Correlation Coefficient (ICC).

The ICC chosen is based on the analysis of variance using a two-way mixed effect model with row and column interaction.

Subject Rater vs. Original Protocol ICC Method ICC Rating
subj 1 Rater 1 Redo Indentation A-k 0.94 Excellent
Rotation A-k 0.98 Excellent
Rater 2 Indentation A-k 0.92 Excellent
Rotation A-k 0.97 Excellent
subj 2 Rater 1 Redo Indentation A-k 0.96 Excellent
Rotation A-k 0.99 Excellent
Rater 2 Indentation A-k 0.94 Excellent
Rotation A-k 0.91 Excellent
subj 3 Rater 1 Redo Indentation A-k 0.95 Excellent
Rotation A-k 0.97 Excellent
Rater 2 Indentation A-k 0.95 Excellent
Rotation A-k 0.96 Excellent
subj 4 Rater 1 Redo Indentation A-k 0.95 Excellent
Rotation A-k 0.96 Excellent
Rater 2 Indentation A-k 0.93 Excellent
Rotation A-k 0.89 Excellent
subj 5 Rater 1 Redo Indentation A-k 0.98 Excellent
Rotation A-k 0.96 Excellent
Rater 2 Indentation A-k 0.99 Excellent
Rotation A-k 0.91 Excellent
subj 6 Rater 1 Redo Indentation A-k 0.96 Excellent
Rotation A-k 0.98 Excellent
Rater 2 Indentation A-k 0.95 Excellent
Rotation A-k 0.95 Excellent
ICC Value Rating
0.0 ≤ ICC < 0.4 Poor
0.4 ≤ ICC< 0.6 Fair
0.6 ≤ ICC < 0.75 Good
0.75 ≤ ICC < 1 Excellent
ICC Method: A-k is defined as: “The degree of absolute agreement for measurements that are based on k independent measurements made under the fixed levels of the column factor” (McGraw & Wong, 1996).