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st: RE: Trouble with confirm and looping.


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Trouble with confirm and looping.
Date   Wed, 4 Aug 2004 18:37:26 +0100

I see a typo here. 

Your local macro -country- is not defined, i.e. empty.  

You could try 

foreach i of local countries { 
	...
} 

except that your loop makes no reference to the 
particular country, so I doubt that this code will do 
what you want it to. It looks as if it will do the
same each time around the loop. 

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

adiallo5@worldbank.org

> I have to produce a table which compares access to 
> electricity by wealth groups
> for a number of african countries using DHS datas.
> 
> The wealth index variable is wlthind5, calculated using a 
> factor analysis on a set of
> variables (radio, tv, elec, floor, wall, etc...).
> 
> wlthind5, as well as the variable used to construct it, are 
> available for some countries.
> But in others, some of them contain missings or do not exist at all.
> 
> Therefore, I have to reconstruct the wealth index.
> 
> local countries "Niger Togo CIV Mali"
> foreach i of local country {
> cap confirm var wlthind5
> if _rc==0 {
>                  ta wlthind5, m
>  }
> else {                                              /*if  
> wlthind5 does not
> exist */
>            cap confirm var frige bike car radio tv elec floor 
> wall rooms
> /*check if these variables exist*/
>            if _rc==0 {
>                                 factor frige bike car radio 
> tv elec floor wall
> rooms, pcf factors(5)
>                                score wlthindf
>                                kdensity wlthindf, normal
>                                bys hhid: xtile wlthind5 
> [aw=hhweight], nq(5)
>                                ta wlthind5, m
>                             }
>             }
> }
> 
> But I just obtain nothing when I run the program (or 
> sometimes, depending on the
> country, frige -or another variable used in the factor- does 
> not exists).
> 

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