Hello,

I have a table of unique organisations, these are in column 1, then in columns 2 through to column 37 are the postcodes for each organisation, for each calendar month e.g. column 2 is the postcode at April 2018, and column 3 is postcode as at May 2018 etc.. In most cases these are the same values. However, I need to identify (or flag) those observations (organisations) where there has been a change in postcode. I looked at the following publication that talked about these issues, but was unable to identify a solution for my data.

https://www.stata-journal.com/sjpdf....iclenum=pr0046

Is anybody able to advise on this issue please?