search for: d_orig

...and "two". Could an argument "range" be added? Otherwise I will have to create an object with the range (may come from a longer calculation), index twice from it and remove it again - kind of an unnecessary bunch of code, I think. Here's an example: # What I currently do: D_orig <- rnorm(20, sd=30) D_range <- extendrange(D_orig, f=0.1) Ijustneed <- seq(D_range[1], D_range[2], len=100) rm(D_range) # what I'd like to have instead: D_orig <- rnorm(20, sd=30) Ijustneed <- seq(range=extendrange(D_orig, f=0.1), len=100) regards, Berry ----------------------...

...evaluated on the original data (called t0). However, in Harrell et al 1996 "Multivariable prognostic models..." Stats Med vol 15, pp. 361--387, it is different (p. 372): The statistic function evaluated on the original data is called "D_app" (apparent statistic), whereas "D_orig" (original statistic) is derived by first fitting the model to a bootstrap sample, then freezing the model and applying it to the original data. The bootstrap statistic D_boot is derived by applying the function to the bootstrap sample. Then optimism O = average(D_boot - D_orig), and the bias-...