artcatr - Sample Size and Power for an Ordered Categorical Outcome

Sample size and power calculations for a two-group randomized trial with an ordinal outcome analysed by a proportional-odds model. Implements the 'ologit' method of White, Marley-Zagar, Morris, Parmar, Royston & Babiker (2023) <doi:10.1177/1536867X231161934> in R.