Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread John Fox
Dear Frank, > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Frank Harrell > Sent: Tuesday, March 12, 2013 2:24 PM > To: r-help@r-project.org > Subject: Re: [R] Bootstrap BCa confidence limits with yo

Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread Frank Harrell
n > >> -Original Message- >> From: > r-help-bounces@ > [mailto:r-help-bounces@r- >> project.org] On Behalf Of Frank Harrell >> Sent: Tuesday, March 12, 2013 11:27 AM >> To: > r-help@ >> Subject: [R] Bootstrap BCa confidence limits

Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread John Fox
@r- > project.org] On Behalf Of Frank Harrell > Sent: Tuesday, March 12, 2013 11:27 AM > To: r-help@r-project.org > Subject: [R] Bootstrap BCa confidence limits with your own resamples > > I like to bootstrap regression models, saving the entire set of > bootstrapped > re

[R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread Frank Harrell
I like to bootstrap regression models, saving the entire set of bootstrapped regression coefficients for later use so that I can get confidence limits for a whole set of contrasts derived from the coefficients. I'm finding that ordinary bootstrap percentile confidence limits can provide poor cover