Yes, the IPUMS IND variable corresponds directly to the variable PEIO1ICD in the NBER files. The reason it appears the 2010 ASEC uses the 2002 codes is because the 2007 scheme is virtually identical to the 2002 scheme. There’s one code that’s different (6675 became 6672) and a few code descriptions changed very slightly. We will look into changing the documentation to make this clearer.
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