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From |
"Kieran McCaul" <Kieran.McCaul@uwa.edu.au> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: istdtize |

Date |
Tue, 22 Sep 2009 03:01:16 +0800 |

... If the output is changing each time you run the command, it would be good to actually see the -istdize- command that you are using and the output that it's generating each time. ______________________________________________ Kieran McCaul MPH PhD WA Centre for Health & Ageing (M573) University of Western Australia Level 6, Ainslie House 48 Murray St Perth 6000 Phone: (08) 9224-2701 Fax: (08) 9224 8009 email: Kieran.McCaul@uwa.edu.au http://myprofile.cos.com/mccaul http://www.researcherid.com/rid/B-8751-2008 ______________________________________________ If you live to be one hundred, you've got it made. Very few people die past that age - George Burns -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Javier Sanchez Sent: Tuesday, 22 September 2009 1:04 AM To: statalist@hsphsun2.harvard.edu Subject: st: istdtize I was trying to use the istdize command and realized that some of the outputs (eg. Number of observed events) are incorrect and change each time I run the command (this problem was posted before but could not find an answer). Also the number of cases might be different from the same strata when looking at the stratified outputs as compared to the summary outputs. After exploring the ado file, I found that there might be a couple of lines missing in the file. The basic problem is when there is more than one group, the total number of cases is no added and the command is using a random line with the cases from that particular observation. Since I am not an expert on Stata, I added this basic lines to the ado file and the outputs look correct but it would be nice if somebody else could look into this as well since there are many papers citing the use of this command that might have some errors. istdize.ado line 1 ............ . . line 163 qui by `Gc': replace `topop'=`topop'[_N] **************NEW***************** qui by `Gc': replace `cases'=sum(`cases') qui by `Gc': replace `cases'=`cases'[_N] ************** END NEW************ -- Javier Sanchez, DVM, PhD Research Chair Risk Analysis Atlantic Veterinary College 550 Univ. Ave Charlottetown C1A 4P3, PE Canada tel +1 902.566.0803 fax +1 902.566.0823 * * 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/

**References**:**st: istdtize***From:*Javier Sanchez <jsanchez@upei.ca>

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