I would like to match the “normal” IPUMS Census data to the IPUMS linked samples (1880-1900, 1880-1910, 1880-1920).
Now my question:
i was assuming that an individual with a given serial and pernum in a given census year would be the same individual with that serial_2 and pernum_2 in the IPUMS linked sample.
By checking consistency (for example, checking whether age and age_2 are the same after the match) I find that this seems indeed to be the case for 1910, but not for 1900 and 1920.
Is there a way to match these datasets in a reliable way?
Thanks for your help