Description
Income from farm or nonincorporated self employment - 1968-1975
Unicon Corporation made the following notes about this variable:
Construction -incfr1 + (incer1 if ernsrc=3)
The data after topcoding were used to create all combined income recodes.
In some years, the topcode flags seem to be inconsistent with the actual data. See Appendix H.4 for details.
For more information on topcodes, see here.
