-fte- is the outcome variable measuring the number of full-time employees in each restaurant either in February or in November of 1994.  Note that this variable is missing in 19 obsrvations, 3 before the intervention and 13 after it.  Execute {stata tab treated period if missing(fte)}
The variable -period- is a clone of the original variable -t-. Like -t-, -period- is an indicator with 0 identifying data collected in February 1994, before the minimum wage was implemented in New Jersey and with 1 identifying data collected in November, after implementaiton in New Jersey.
The ID variable -id2- is identical to C & K's variable -id- except that the KFC store's ID is set to 9407.
In the Card & Krueger data downloaded from SSC, the store ID -407- is assigned to both a KFC and a Wendy's
This time variable is superseded by -period-.  See the note for the variable -period-.
This ID variable is superseded by -id2-.  See the note for the variable -id2-.
The data is -xtset-.  Execute {stata xtset}
See the notes for the variables "period" and "id2".  The variable "chain" is also added.
Accessed Aug. 7, 2023 from "http://fmwww.bc.edu/repec/bocode/c/CardKrueger1994.dta"
This -dta- file is an edited version of the original Card & Krueger (1994) data posted at SSC.