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| From | Nick Cox <njcoxstata@gmail.com> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: why is there no weight option in -esize-? |
| Date | Mon, 29 Jul 2013 16:16:54 +0100 |
I am going to disappoint you by writing a different comment. In my experience there are three main reasons why something is not yet implemented: 1. Pure oversight, or "I don't want that myself". 2. Impending deadlines. 3. The programmer(s) is/are not (yet) clear how to implement something _so that it produces dependable results_. In the case of common or garden users, guess at #1 or #2. In the case of StataCorp, guess at #3. Often (indeed always) writing the code is secondary for StataCorp. There is typically a project based on simulations designed to work out how some method behaves with the extra something. For example, perhaps weights cause sampling distributions to be very poor approximations whenever there is some extreme pattern of weights. It's not just pushing code out of the door. It's defending or explaining to users when tech support gets reports of really strange-looking results. Ariel will know this, really, but as always a thread started by one can be of wider interest, hence the broader remarks. That said, I have complete ignorance of any particular reasons that may apply with this command. Nick njcoxstata@gmail.com On 29 July 2013 15:57, Ariel Linden, DrPH <ariel.linden@gmail.com> wrote: > Can anyone think of a reason why the new effect size estimator in version > 13.0 -esize-, is not programmed to accept weights? I cannot think of a > statistical limitation, but perhaps I am missing something? > > As a general request to StataCorp, I would ask that commands that lend > themselves to use weights, be programmed with that option. > > (I am somewhat expecting a response from Nick saying "feel free to write a > command, yourself, that accepts weights...") > > Ariel > > > > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/