st: Some kind of count or tabulation?

["b. water" <barleywater@hotmail.com>]

Dear all,

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.

Regards,
bw

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