A data set containing a subset of variables from the German breast cancer study (Schumacher et al. (1994)).
A data frame with 686 rows and 4 variables.
id Subject ID
hormon Treatment indicator for hormone therapy (0 = no, 1 = yes)
rectime Time to recurrence or censoring (in days)
censrec Event indicator (0 = censored, 1 = recurrence)
Sauerbrei W, Royston P. Building multivariable prognostic and diagnostic models: transformation of the predictors by using fractional polynomials. Journal of the Royal Statistics Society Series A. 1999;162(1):71–94.
Schumacher M, et al. for the German Breast Cancer Study Group. Randomized 2x2 trial evaluating hormonal treatment and the duration of chemotherapy in node-positive breast cancer patients. Journal of Clinical Oncology. 1994;12:2086–2093.
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