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RE: st: Some kind of count or tabulation?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Some kind of count or tabulation?
Date   Thu, 5 Jan 2006 20:48:38 -0000

It can also be done without generating a new 
variable. 

unab var : * 
local var : subinstr local var " " ",", all
count if !mi(`var')

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

smerryman@kc.rr.com
 
> -egen all_var = rmiss(Var*)- 
> 
> -count if all_var == 0 -

barleywater@hotmail.com
 
> > Stata 8.2 Windows XP Pro SP2
> > 
> > My data set looks like this:
> > 
> > obs	Var1	Var2	Var3	Var(nth)
> > 1	jacn	clstr	lnreg	pval
> > 2	bstr	.	lgreg	nopval
> > 3	.	rct	.	nopval
> > 4	jacn	clstr	anova	.
> > 
> > What I want to do firstly is to count frequencies of features in 
> > each 
> > variable, which I did with tab1 varlists. Then what I want to find 
> > out is 
> > simply how many observations contained all the variables, e.g. in 
> > this 
> > example, only 1 observation i.e. the first (observation 1) 
> > contained all the 
> > variables. I think it has something to do with tabulate but just 
> > couldn't 
> > get the syntax for this. Any help/advise is appreciated.

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