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From |
"Sergiy Radyakin" <serjradyakin@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Re: limiting observations within a program |

Date |
Thu, 2 Oct 2008 20:06:34 -0400 |

And where is varlist X defined? On Thu, Oct 2, 2008 at 7:56 PM, Michael McCulloch <mm@pinest.org> wrote: > Thanks Martin. This is my program. It first estimates probability of > receiving treatment (called "tcm"), and then weights the data for -stcox-. > There was one observation in which the weight was missing, I'm attempting to > include a line in my program to drop that one observation. > > capture program drop msmcox_stageALL_includeIPTWd > program define msmcox_stageALL_includeIPTWd, rclass > tempname p_tcm_ALL p_notcm_ALL p_ALL p_noALL > wt_stab_ALL > > * fit the full model used in Traditional Cox > logit tcm dxage sex celltype txsurg txrad txchemo > > *estimate probability of treatment > predict `p_tcm_ALL' > gen `p_notcm_ALL' = 1-`p_tcm_ALL' if tcm==0 //want p(tcm) for > both users and nonusers > replace `p_tcm_ALL' =`p_notcm_ALL' if tcm==0 > > *create stabilized weight==P(A)/P(A|W) > logit tcm predict `p_ALL' > gen `p_noALL' = 1-`p_ALL' if tcm==0 > replace `p_ALL' = `p_noALL' if tcm==0 > gen `wt_stab_ALL' = `p_ALL'/`p_tcm_ALL' > > * stset the data > stset lastcontact [`iweight=wt_stab_ALL'], failure(failed) > origin(datedx) scale(30.4375) /*wt: stabilized IPTW*/ > > * cox > stcox tcm if `wt_stab_ALL'!=. > indeplist, local > foreach var of varlist `X' { > return scalar `var' = exp(_b[`var']) > } > end set seed 12358 > eststo MSM_t_I: bootstrap tcm=r(tcm), eform reps(10): > msmcox_stageALL_includeIPTWd > > > >> That is too little info. How does `var1' come into existence? A >> -bootstrap- would cycle through the -program- several times, so that is an >> important issue. Also -set trace on- and let us know the output... >> >> HTH >> Martin >> _______________________ >> ----- Original Message ----- From: "Michael McCulloch" <mm@pinest.org> >> To: "Statalist" <statalist@hsphsun2.harvard.edu> >> Sent: Friday, October 03, 2008 1:10 AM >> Subject: st: limiting observations within a program >> >>> Hello, >>> I've written a short program which estimates a probability of censoring, >>> and have a question. The program works as written, but if I add the >>> following line: >>> >>> drop if `var1'==. >>> >>> the program returns error message: >>> >>> "varlist required an error occurred when bootstrap executed program1 >>> r(100);" >>> >>> Any assistance would be appreciated! >>> >>> >>> -- >>> >>> Best wishes, >>> Michael McCulloch >>> >>> >>> >>> Pine Street Foundation >>> 124 Pine St., San Anselmo, CA 94960-2674 >>> Tel: (415) 407-1357 >>> Fax: (415) 485-1065 >>> mcculloch@pinestreetfoundation.org >>> www.pinestreetfoundation.org >>> * >>> * For searches and help try: >>> * http://www.stata.com/help.cgi?search >>> * http://www.stata.com/support/statalist/faq >>> * http://www.ats.ucla.edu/stat/stata/ >>> >> >> >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/statalist/faq >> * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Re: limiting observations within a program***From:*Michael McCulloch <mm@pinest.org>

**References**:**st: Re: limiting observations within a program***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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