I have several large data sets (4M+ obs) that I would like to sample from.
For every record with value1, I want to get n records with value2,
stratified by another variable and output the records in the same data
step. How can I do this in the most efficient way?
Joanne M. Mor, MS
Maternal & Child Health Program
School of Public Health
University of Hawaii at Manoa
1960 East-West Road, Biomed C105M
Honolulu, HI 96822-2319
Phone: (808) 956-5761, 956-8832
FAX: (808) 956-5753