Table AOC2. Confidence interval for Lin’s concordance coefficient

Confidence interval limit or sample size are computed using the approximate normality of Fisher’s z transformation of the concordance coefficient. The formula for V(K) was corrected in Lin, L., Hedayat, A.S., Sinha, B., Yang, M. (2002). Statistical methods in assessing agreement: models, issues, and tools. Journal of the Amer. Stat. Assn 97:257-270. See nQuery Advisor® manual Appendix for details of computing method for z. Figure AOC2 shows computations for one example. Additional values tested results in AOT2 and for n to limit versus limit to n. Values for V(K) checked against tables in Lin, L., Hedayat, A.S., Sinha, B., Yang, M. (2002). Statistical methods in assessing agreement: models, issues, and tools. Journal of the Amer. Stat. Assn 97:257-270.

Figure AOC2. In the first column, nQuery Advisor® 7.0 computed confidence limit, and in the second column, sample size.