Re: [R] Odds Ratios in rms package

Thanks a lot David, I must have missed this sentence. Best regards, Sebastian Am 20.06.2012 21:05, schrieb David Winsemius: On Jun 20, 2012, at 12:12 PM, Sebastian Pölsterl wrote: Hi, I'm using the rms package to do regression analysis using the lrm function. Retrieving odds ratios is

Re: [R] Odds Ratios in rms package

On Jun 20, 2012, at 21:05 , David Winsemius wrote: On Jun 20, 2012, at 12:12 PM, Sebastian Pölsterl wrote: Hi, I'm using the rms package to do regression analysis using the lrm function. Retrieving odds ratios is possible using summary.rms. However, I could not find any information on

Re: [R] Odds Ratios in rms package

Peter- for summary.rms, high and low columns are supposed to be the quartiles. Perhaps Sebastian, the original poster, could run age through the ordinary summary function or the describe function and show us the result. Frank Peter Dalgaard-2 wrote On Jun 20, 2012, at 21:05 , David Winsemius

[R] Odds Ratios in rms package

Hi, I'm using the rms package to do regression analysis using the lrm function. Retrieving odds ratios is possible using summary.rms. However, I could not find any information on how exactly the odds ratios for continuous variables are calculated. It doesn't appear to be the odds ratio at 1 unit

Re: [R] Odds Ratios in rms package

On Jun 20, 2012, at 12:12 PM, Sebastian Pölsterl wrote: Hi, I'm using the rms package to do regression analysis using the lrm function. Retrieving odds ratios is possible using summary.rms. However, I could not find any information on how exactly the odds ratios for continuous variables

Re: [R] Odds Ratios in rms package

The explanation is in the first paragraph of the help file for the summary.rms function [inter-quartile-range odds ratios, which handles nonlinearities]. Note that you are assuming that age has a linear effect, which is counterintuitive. Frank Sebastian Pölsterl wrote Hi, I'm using the rms