The occupational codes changed across Censuses. How did IPUMS ensure comparability of occupation (OCC1990) and occupational standing variables (HWSEI PRENT) across years (1990s-2013)?
Thank you very much!
The occupational codes changed across Censuses. How did IPUMS ensure comparability of occupation (OCC1990) and occupational standing variables (HWSEI PRENT) across years (1990s-2013)?
Thank you very much!