--- "mac.stata" <[email protected]> wrote:
> 1. aggregating data
> I have records of individuals on the community level and these should
> be matched with data on the district level (I have district numbers I
> can match; I will use "joinby"). Which is the right way to go:
>
> a) have the two data sets put together with "joinby" and then try
> using "collapse" to aggregate the data on a district level (and then
> regress the data on the district level), or
>
> b) again�on the community level�put the data sets together first but
> then work with the Stata command "xi: ... ... ... i.districts"?
>
> As these are records of individuals containing socio-economic data it
> might get very difficult when using "collapse", I think. So, is the
> "xi:" actually the right way to go?
This is basically a multilevel problem, so the set of tools for are not
-xi- but -xt-, see -help xt-. When doing your analysis on an aggregate
level the thing to look out for is called the ecological fallacy, see
for a describtion and some references here:
http://www.stata.com/statalist/archive/2006-07/msg00584.html
> 2. local macro
<snip>
> because it is a long list of variables I wanted to manually use line
> breaks. I therefore used the "#delimit ;" and "#delimit cr" before
> and after the definition of the local macro << local local_var = " A
> B C D ... Z" >>. I thought this performs fine, also because I did not
> get any error but when I checked if all went right, it showed that
> after the third (of about five) line breaks the variables were
> ignored.
The problem is not the line breaks but the =. There should be no
problem if you type:
local local_var "A B C D ... Z"
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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