Craig A. Olson, "A Comparison of Parametric and Semiparametric Estimates
of the Effect of Spousal Health Insurance Coverage on Weekly Hours
Worked by Wives", Journal of Applied Econometrics, Vol. 13, No. 5, 1998,
pp. 543-565.

Data are extracted from the March 1993 CPS. There are 22,272 observations.
They are in the file datafile.co, which is a DOS file zipped in the file
co-data.zip.

There are 23 variables per observation in the following order:

------------------------------------------------------------------------------
   1. whrswk      byte   %9.0g              hours worked per week by wife
   2. lfp         byte   %8.0g              =1 if whrswk>0
   3. hhi         byte   %9.0g              =1 if wive covered by husb's HI
   4. whi         byte   %9.0g              =1 if wife has HI thru her job
   5. hhi2        byte   %9.0g              =1 if husb has HI thru own job
   6. ed9_12      byte   %8.0g              =1 if 9 yrs <= ed < 12 yrs
   7. edhs        byte   %8.0g              =1 if HS education
   8. smcol       byte   %8.0g              =1 if 13-15 yrs of educ
   9. college     byte   %8.0g              =1 if 16 yrs of educ
  10. gradsch     byte   %8.0g              =1 if yrs of educ > 16
  11. black       byte   %8.0g              =1 if race is black
  12. othrace     byte   %8.0g              =1 if race ne black or white
  13. hispanic    byte   %8.0g              =1 if ethnicity is hispanic
  14. exp         float  %9.0g              yrs of potential work experience
  15. exp2        float  %9.0g               (exp^2)/100
  16. exp3        float  %9.0g               (exp^3)/1000
  17. kidslt6     byte   %9.0g              No. of kids under age of 6
  18. kids618     byte   %9.0g              No. of kids 6-18 yrs old
  19. husby       float  %9.0g              husband's income in $1000
  20. nc          byte   %8.0g              =1 if region is north central
  21. south       byte   %8.0g              =1 if region is the south
  22. west        byte   %8.0g              =1 if region is the west
  23. wght        float  %9.0g              sampling weight
-------------------------------------------------------------------------------

Craig Olson
colson@bus.wisc.edu