06-14-2014 02:49 PM
Hello, guys. I'm trying to replicate a empirical paper and I stick in a data step. Basically, I have a list of ID, dates, industry and firm ratios. What I wan to do is to locate another company with different id but the same date in another larger data set, Also, this matching company should be in the same industry and have similar ratios (within the range of plus and minus 10% of the companies in the original list). I'm wondering anyone can help?
Thank you so much
06-17-2014 10:35 PM
This is a common problem in epidemiology. Sufficiently so, that some macros have been developed. Check out
(I just googled
matching macro site:sas.com
As LinusH suggests, you could do it as a one-off with SQL. If your large data set is really big, the computer time might be huge.