I’m using the CPS March Supplement via IPUMS to calculate the number of self-employed workers by year. Using the class of worker last year question (classwly), unincorported self-employed workers drop from ~10 million to ~8 million for 1996-1997 while incorporated self-employed jump from ~4 million to ~6 million (see figure below).
I’m defining incorporated self-employed as classwly==(14) and unincorporated as classly==(10,13). From what I’ve read, these definitions don’t change in 1996-97 and neither does the weight variable (wtsupp). Is there a coding mistake where some of the unincorporated are being assigned as incorporated? Thanks so much for your help!