SPD SECOND LONGITUDINAL FILE USER NOTES
NOVEMBER 13, 2002
DUPLICATE VARIABLES - PAID AND HIPAID
The 2nd Longitudinal Survey of Program Dynamics (SPD) Data contained
two health insurance variables which were found to be the same. HIPAID
is a duplicate of the PAID variable. The occurrence of two variables containing
the same information can be traced back to the Current Population Survey
(CPS), from which the bridge survey instrument fielded in 1997 was based.
The CPS health insurance field contained the same variables, PAID and
HIPAID, with HIPAID a duplicate of PAID. There is no reason to have both
variables; therefore future files will exclude the variable HIPAID.