st: select a random obs from dataset

["Akihito Tokuhara" <akitoku4@hotmail.com>]

Dear all,

My colleague wants to know how to select a random obs with some conditions 
from her dataset.
She wants to select one person randomly per household, but also with 
condition that there is
no repetition of household (no household should appear twice in the outcome, 
although the
person is different).

I don't know the method and I don't know if this can be done by Stata or 
not. If there is a way, or some suggestions, I would appreciate very much. 
Many thanks in advance.

Akihito

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