Date: Mon, 22 Jun 2009 15:02:39 -0700 Daniel Nordlund "SAS(r) Discussion" Daniel Nordlund Re: bootstrap confidence intervals <6952c34c-4d07-4390-8614-cb9e5a828578@h11g2000yqb.googlegroups.com> text/plain; charset=iso-8859-1

> -----Original Message----- > From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On > Behalf Of Shiling Zhang > Sent: Monday, June 22, 2009 2:54 PM > To: SAS-L@LISTSERV.UGA.EDU > Subject: Re: bootstrap confidence intervals > > Here is a basic example on how to use bootstrap resampling to do a > regression. > > SAS surveyselect procedure provides a easy way to obtain a bootstrap > resampling data set. The left over things are standard in regression. > > %let n=20; > > data t1; > do i =1 to &n; > x=rannor(567); > y=1 + 1 *x +rannor(567); > output; > end; > run; > > proc surveyselect seed=789 data=t1 > METHOD=urs rate=1 > rep=1000 outhits out=bootstrapped; > run; > > proc print data=bootstrapped(obs=100); > run; > > proc reg data=bootstrapped outest=est noprint; > by replicate; > model y = x ; > run; > quit; > > proc means data=est; > var intercept x; > run; > > proc reg data=t1 ; > model y = x ; > run; > quit; > > > > On Jun 22, 9:11 am, adel_ta...@YAHOO.FR ("adel F.") wrote: > > Hi,=0A=0AI=A0would like to =A0run a logistic regression > models using bootst= > > rap to get bootstrap confidence intervals for my odds > ratios and bootstrap = > > confidence intervals for AUC.=0A=0AIs there a SAS > procedure, which can help= > > me do that.=0A=0AThanks a lot,=0A=0AAdel=0A=0A=0A