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st: RE: RE: posting question.


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: posting question.
Date   Thu, 30 Sep 2004 15:50:55 +0100

if v001 == `i' 

Nick 
n.j.cox@durham.ac.uk 

> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Nick Cox
> Sent: 30 September 2004 15:40
> To: statalist@hsphsun2.harvard.edu
> Subject: st: RE: posting question.
> 
> 
> I guess that your inner loop 
> should be more like 
> 
> forval i=1/`nclust' {
>      cap mrate if v001==`i'
>      post mortrate (`i') ($U_1_1)
> }
> 
> Note that you don't need the -mortrate- 
> variable. 
> 
> You ask for a -post- of v001. Now 
> just imagine that you are Stata. v001
> is a variable. Stata will not 
> -post- a whole variable. It shrugs 
> its shoulders at your funny request 
> and -post-s v001[1], wherever it is 
> in the loop. 
> 
> Put otherwise, the -post- statement 
> has _no_ consciousness that (a) 
> it is inside a loop or (b) you 
> expect it to do different things
> each time round the loop, unless
> you spell that out. 
> 
> But you don't need a -post- at 
> all, given that you want the results 
> in the same file. 
> 
> su v001,meanonly
> local nclust = r(max)
> gen mortrate = . 
> qui forval i=1/`nclust' {
>      cap mrate if v001==`i'
>      replace mortrate = $U_1_1 if v001 = `i' 
>     
> }
> 
> Now your results are merged without 
> using a separate file or -merge-. 
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> adiallo5@worldbank.org
> > 
> > The program mrate, from Macro International, computes 
> > mortality rates and save
> > them in global
> > macros. The under-five mortality rate for example is saved 
> in $U_1_1.
> > I want to use a DHS survey tdataset and compute mortality 
> > rates in each cluster.
> > 
> > 
> > use benin
> > 
> > g id= _n
> > 
> > The cluster variable is v001:
> > 
> > l  v001 in 1/15
> > 
> >      +------+
> >       | v001 |
> >       |------|
> >   1. |    1 |
> >   2. |    1 |
> >   3. |    1 |
> >   4. |    1 |
> >   5. |    1 |
> >       |------|
> >   6. |    1 |
> >   7. |    1 |
> >   8. |    1 |
> >   9. |    1 |
> >  10. |    2 |
> >        |------|
> >  11. |    2 |
> >  12. |    2 |
> >  13. |    2 |
> >  14. |    2 |
> >  15. |    2 |
> >      +------+
> > 
> > su v001
> >     Variable |       Obs        Mean    Std. Dev.       Min 
>        Max
> > 
> -------------+--------------------------------------------------------
> >         v001 |      5953    130.4614     54.7308          1 
>        210
> > 
> > postfile mortrate v001 double mortrate using mortrate , replace
> > 
> > su v001,meanonly
> > local nclust = r(max)
> > g mortrate = .
> > forval i=1/`nclust' {
> >     cap mrate if v001==`i'
> >     replace mortrate = $U_1_1
> >     post mortrate (v001) (mortrate)
> > }
> > postclose mortrate
> > 
> > use mortrate, clear
> > 
> > l in 1/15
> > 
> >      +------------------+
> >      | v001    mortrate |
> >      |------------------|
> >   1. |    1   111.11111 |
> >   2. |    1   333.33334 |
> >   3. |    1         500 |
> >   4. |    1   54.054054 |
> >   5. |    1           . |
> >      |------------------|
> >   6. |    1   111.11111 |
> >   7. |    1           . |
> >   8. |    1           . |
> >   9. |    1           . |
> >  10. |    1           . |
> >      |------------------|
> >  11. |    1         100 |
> >  12. |    1           . |
> >  13. |    1   133.33333 |
> >  14. |    1           . |
> >  15. |    1   133.33333 |
> >      +------------------+
> > 
> > How to get the correct values of v001 so that I can merge 
> > mortrate.dta with the
> > master benin.dta?
> 
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