1. Estimating sample sizes for binary, ordered categorical, and continuous outcomes in two group comparisons
2. Chen B. Zaebast D. andSeel L.(2012).A macro to calculate kappa statistics for categorizations by multiple raters.https://support.sas.com/resources/papers/proceedings/proceedings/sugi30/155‐30.pdf(accessed 2022).
3. Measuring nominal scale agreement among many raters.