I’ve used the individual linking variable CPSIDP to link the following TUS surveys, which seems consistent with the CPS 4-8-4 panel design:
Jan 1999 --> Jan 2000
May 1999 --> May 2000
Feb 2002 --> Feb 2003
May 2010 --> May 2011
Cross-checking the relevant demographic variables (sex, race, age) seems to give reasonable results. Am I correct in assuming that these are the same respondents? Is this a reasonable way to look at tobacco use data longitudinally?