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From |
Austin Nichols <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Producing graph with predictions after IVPOIS |

Date |
Thu, 7 Mar 2013 11:59:20 -0500 |

Anat (Manes) Tchetchik <anatmanes@gmail.com> In addition to the oft-repeated "nots" of the Statalist FAQ, one can offer the positive advice: *Do use publicly available data* to construct an example of what you want or the error you run into. clear use http://fmwww.bc.edu/RePEc/bocode/i/ivp_bwt.dta g lnbw=ln(bw) loc x "parity white male" loc z "edfwhite edmwhite incwhite cigtax88" ivreg2 lnbw `x' (cigspreg=`z') *gmm (bw*exp(-{xb:`x' cigspreg}-{b0})-1), inst(`x' `z') onestep *above works only in Stata 11+ ivpois bw `x', endog(cigspreg) exog(`z') ren cigspreg tmp g double pbw=. qui forv i=1/6 { g cigspreg=(`i'-1)*10 predict double xb g double exb=exp(xb) su exb, mean replace pbw=r(mean) in `i' drop xb exb cigspreg } g c=(_n-1)*10 in 1/6 la var pbw "Predicted mean birthweight" la var c "Cigarettes during pregnancy" la var tmp "Cigarettes during pregnancy" la var bw "Birthweight" ren tmp cigspreg sc bw tmp, msize(vsmall)||sc pbw c, c(l) On Thu, Mar 7, 2013 at 11:29 AM, Nick Cox <njcoxstata@gmail.com> wrote: > Specifically > > not explaining where user-written programs you refer to come from > > not explaining what "doesn't work" means > > not using the -cmdname- convention (neither do most people, but it's > still a good idea). > > In fact these points don't really hinge on what is or is not in the > FAQ or even whether there is one. > > Just imagine you wrote a program and someone says to you "I tried your > program but it doesn't work". This is essentially no information. > > Or just imagine that you are the local Stata expert and someone says > to you "I have problems with the -foobar- command". Your first > question has to be "What is that?" > > Unclear questions waste everyone's time, including the people who > wrote them, because they won't get good answers. > > Nick > > On Thu, Mar 7, 2013 at 3:08 PM, Anat (Manes) Tchetchik > <anatmanes@gmail.com> wrote: > >> Hi Nick, >> Thanks for your answer. >> I probably missed something, What was the thing I should have done >> which I haven't? is there an archive with FAQs I could have search >> for the answer there? >> Anyway, I have posted two questions in the past few months, I didn't >> realize it is that much. >> Anat >> >> On Thu, Mar 7, 2013 at 3:09 PM, Nick Cox <njcoxstata@gmail.com> wrote: >>> I have rewritten this question using Statalist FAQ guidelines. Why is >>> this (seemingly) so difficult to understand and to do? Being new to >>> Statalist can't be a reason here as Anat has posted many questions >>> over some time. >>> >>> Anat Tchetchik, PhD >>> >>> I ran an -ivpois- model and want to produce few figures. >>> >>> -ivpois- is a user-written command by Austin Nichols from SSC. >>> >>> In the Poisson model I used to employ the -prgen- command, for example: >>> >>> prgen income, x( spain=1) from(1) to(14) ncases(14) gen(meetingsbrypr) >>> >>> But it doesn't work for -ivpois-. -prgen- is another user-written >>> command, which I downloaded from <I can't fill that in, as several >>> places could qualify>. >>> >>> Any ideas for other commands? >>> >>> Nick >>> >>> On Thu, Mar 7, 2013 at 12:54 PM, Anat (Manes) Tchetchik >>> <anatmanes@gmail.com> wrote: >>>> Hi all. >>>> >>>> I ran an IVPOIS model and wan't to produce few figures. >>>> In the poisson model I used to employ the prgen command >>>> (for example: prgen income, x( spain=1) from(1) to(14) ncases(14) gen >>>> (meetingsbrypr) >>>> But it doesn't work for the IVpois >>>> Any ideas for other commands? * * 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/

**Follow-Ups**:**Re: st: Producing graph with predictions after IVPOIS***From:*"Anat (Manes) Tchetchik" <anatmanes@gmail.com>

**References**:**st: Producing graph with predictions after IVPOIS***From:*"Anat (Manes) Tchetchik" <anatmanes@gmail.com>

**Re: st: Producing graph with predictions after IVPOIS***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Producing graph with predictions after IVPOIS***From:*"Anat (Manes) Tchetchik" <anatmanes@gmail.com>

**Re: st: Producing graph with predictions after IVPOIS***From:*Nick Cox <njcoxstata@gmail.com>

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