grouping - Create unique personal id -


i have stata data set this:

householdid  personid othervariables 1               1 1               2                  2               1 2               2 3               1 3               2

here householdid unique identifier each household , personid unique identifier each person in household. if want create unique personal id each person within sample, period. how this?

i have tried egen per_id = group(personid householdid) doesn't seem work.

i take want unique identifier each person within entire dataset. 

sort householdid personid  gen long obs id = _n

as follows accessible discussion in stata faq. have been found typing in stata 

search identifier

or 

search id

(meta-answer: can , should within stata information on basic notions this.)

i add strong recommendation word unique still carries original meaning of appearing once only. word distinct is, suggest, better word when mean. more on on p.558 of this paper.


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