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APA Citation
White, I. R., Marley-Zagar, E., Morris, T. P., Parmar, M. K. B., Royston, P., & Babiker, A. G. (2023). artcat: Sample-size calculation for an ordered categorical outcome. Stata journal, 23, 3–23. http://access.bl.uk/ark:/81055/vdc_100179554197.0x000006