 |
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: How to create a random number identifier number
Dear Anna, if you sort on some variable other than personid, or
perform a random sort, you could then:
gen new_personid = _n
This creates a variable which has a value equal to the sequence # of
that record, which is why you have to create some sort order other
than personid.
Michael
On Nov 11, 2009, at 6:37 PM, Anna Reimondos wrote:
Hello,
I am experiencing problems creating a unique set of number for my
dataset.
I have a dataset with around 11,000 subjects or persons, and each one
of these subjects has a unique identifier that is 5 digits long
(personid).
I need to create a concordance file which list the original 5 digit
"personid" and matches this to another new randomly created identifier
for each person. This new identifier (new_personid) also has to be 5
digits long.
Example:
personid new_personid
10526 35624
18594 21893
54632 12489
I have tried playing around with the gen x = uniform() function but
to no avail. I am unable to create exactly 11,000 unique numbers with
5 digits.
I also tried just using the egen x=se() command, but then the ids are
sequential and not random and I am afraid then perhaps someone could
figure out how to match the personid and the newperson id....
Any help would be much appreciated,
Thanks
Anna
(Using STATA 10.1, Windows Vista)
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
Michael McCulloch
Pine Street Foundation
124 Pine Street
San Anselmo, CA 94960-2674
tel: 415-407-1357
fax: 206-338-2391
[email protected]
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/