Where are the e-cigarette variables from the latest waves of the CPS Tobacco Use Supplement?
Unfortunately IPUMS CPS does not have variables relating to use of e-cigarettes available yet. These variables are, however, available via NBER. To use IPUMS CPS data with NBER data, you can merge the data together. This can be done in couple different ways. One way is by performing a sequential merge, which is only possible because NBER and IPUMS CPS share the same sort ordering. Another way is to perform the merge by using the following variables as linking keys: HRHHID, HRHHID2, HUHHNUM, HRSAMPLE, HRSERSUF, and LINENO.
I hope this is helpful.