To whom this may concern–
I have been linking the responses of those who participated in both the Jan/Feb and March supplement in year x (specifically in 1995, 1997, 1999, 2001, 2003, 2005, 2007). To do this, with the guidance of IPUMS staff member Tim Moreland, I merged the IPUMS CPS data with the NBER data to gain unique person identifiers, and believe to have done this successfully.
My remaining question, however, is in regards to the usefulness of the variable “lineno.” I have been using lineno as one of the several variables to uniquely identify respondents and link them throughout months in year x. However, it got me thinking that even if a person participated in both Jan/Feb and March of year x, isn’t it possible that they have a different “lineno” in Jan/Feb than they do in March of year x?
Thanks in advance for any help you can provide–