Re: [R] bootstrap: definition of original statistic

2008-02-23 Thread Gad Abraham
> Gad Abraham wrote: >> Hi, >> In the boot package, the original statistic is simply the statistic function 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 f

Re: [R] bootstrap: definition of original statistic

2008-02-22 Thread Frank E Harrell Jr
Gad Abraham wrote: > Hi, > > In the boot package, the original statistic is simply the statistic > function 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 statist

[R] bootstrap: definition of original statistic

2008-02-21 Thread Gad Abraham
Hi, In the boot package, the original statistic is simply the statistic function 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 origin