I have downloaded IPUMS data for Indonesia, and want to track the change in population of the different regencies (kabupaten) across census rounds. However, there are some issues:
The number of cases varies dramatically across census rounds. For example, for regency Magelang, I have 2791 cases (=people?) for the 2005 census round, but 117467 for the 2010 census round. The population can impossibly have changed by that much…what is the problem?
Interestingly, for the 2010 census round, it seems like the true population is always pretty much ten times the cases in IPUMS; actual population data from the 2010 census is made available here (for the Central Java province, which hosts the Magelang regency): http://sp2010.bps.go.id/index.php/sit…. Can that make sense? But even if so, how do I treat the 2005 number of cases, i.e. 2791?
As a final question, is IPUMS even the right data to consider?
I would really appreciate some helpful comments! Thank you.