[R] How can I obtain the values of BIAS and STD. ERROR from a bootstrap.
John Sorkin
jsorkin at grecc.umaryland.edu
Mon Jul 10 15:16:35 CEST 2006
R 2.3.1
Windows XP
Question: How can I obtain the values of BIAS and STD. ERROR from a
bootstrap.
Background:
I am running a bootstrap:
result2<-boot(1:400,regSEvssample,R=5000)
and obtain the following results:
Bootstrap Statistics :
original bias std. error
t1* 1.876602 -0.0001368616 0.1630380
I would like to get the values of ORIGINAL and BIAS. I can get the
value of ORIGINAL:
> result2$t0
[1] 1.876602
But I can't find a way to get the values of BIAS or STD. ERROR. Can
someone suggest how I can obtain the values for these two statistics?
Thanks,
John
John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
Baltimore VA Medical Center GRECC,
University of Maryland School of Medicine Claude D. Pepper OAIC,
University of Maryland Clinical Nutrition Research Unit, and
Baltimore VA Center Stroke of Excellence
University of Maryland School of Medicine
Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
410-605-7119
jsorkin at grecc.umaryland.edu
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