For all medication-round fills, MEPSIDF is a variable that uniquely identifies respondents across MEPS panels. It is created by combining PANELF, DUIDF, and PIDF. IPUMS MEPS staff created MEPSIDF for the 1996-2017 samples to provide a single, universal linking key for MEPS persons. Beginning in 2018, AHRQ modified the identifiers DUIDF and DUPERSIDF (which combines DUIDF with PIDF) on the original MEPS data files to append information about PANELF to the first two columns. This update makes DUPERSIDF identical to MEPSIDF in the IPUMS MEPS extract system for 2018-forward.
This is a 10-character string variable.
- 1996-2021: All medication-round fill records.
- No weights are available for this variable. Please refer to MEPSIDF for more information.