Thanks for the quick reply. The tab you suggested has the following:
ERSCOR50 used year specific data to calculate scores for 1950 onward. However as the earnings and education data were not available for pre-1950 censuses, the 1950’s ERSCOR50 scores are assigned for cases in pre-1950 censuses.
What does “assigned” mean for pre-1950? I am looking at the var in the 1850-1880 linked sample and trying to understand how it was derived.
Do they use 1950 data for each occupation and then assign that to pre-1950 years?