BWGHT.DES faminc cigtax cigprice bwght fatheduc motheduc parity male white cigs lbwght bwghtlbs packs lfaminc Obs: 1388 1. faminc 1988 family income, $1000s 2. cigtax cig. tax in home state, 1988 3. cigprice cig. price in home state, 1988 4. bwght birth weight, ounces 5. fatheduc father's yrs of educ 6. motheduc mother's yrs of educ 7. parity birth order of child 8. male =1 if male child 9. white =1 if white 10. cigs cigs smked per day while preg 11. lbwght log of bwght 12. bwghtlbs birth weight, pounds 13. packs packs smked per day while preg 14. lfaminc log(faminc)