st: testing equality of proportions?

[Dan Waldo <dwaldo@aresearch.com>]

Dear all,

I apologize in advance for a very rudimentary question ... but I am new 
to Stata and don't have the syntax mastered yet.

My subjects are classified by two nominal attributes, say X and Y. I run 
the tabulate procedure

svy: tab X Y , row ci stubwidth(15)

but for the life of me I cannot figure out the syntax of a command to 
test whether the proportion with Y==A is the same for subjects with 
X==Often as for those with X==Seldom. I am sure the answer is somewhere 
in the manuals, but I haven't been able to formulate the question in a 
way that leads me there.
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