Haneuse S, Saegusa T, Lumley T. osDesign: An R Package for the Analysis, Evaluation, and Design of Two-Phase and Case-Control Studies. J. Stat. Soft. [Internet]. 2011 Aug. 24 [cited 2024 Apr. 26];43(11):1-29. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v043i11