SLEEP75.DES age black case clerical construc educ earns74 gdhlth inlf leis1 leis2 leis3 smsa lhrwage lothinc male marr prot rlxall selfe sleep slpnaps south spsepay spwrk75 totwrk union worknrm workscnd exper yngkid yrsmarr hrwage agesq Obs: 706 1. age in years 2. black =1 if black 3. case identifier 4. clerical =1 if clerical worker 5. construc =1 if construction worker 6. educ years of schooling 7. earns74 total earnings, 1974 8. gdhlth =1 if in good or excellent health 9. inlf =1 if in labor force 10. leis1 sleep - totwrk 11. leis2 slpnaps - totwrk 12. leis3 rlxall - totwrk 13. smsa = 1 if live in smsa 14. lhrwage log hourly wage 15. lothinc log othinc, unless othinc < 0 16. male = 1 if male 17. marr = 1 if married 18. prot = 1 if Protestant 19. rlxall slpnaps + personal activs 20. selfe =1 if self employed 21. sleep mins sleep at night, per week 22. slpnaps mins sleep, including naps, per week 23. south =1 if live in south 24. spsepay spousal wage income 25. spwrk75 =1 if spouse works 26. totwrk mins worked per week 27. union =1 if belong to union 28. worknrm mins work main job 29. workscnd mins work second job 30. exper age - educ - 6 31. yngkid =1 if children < 3 present 32. yrsmarr years married 33. hrwage hourly wage 34. agesq age^2