King County 2001 Birth Data
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This data file contains outcomes on 2500 children that were born in
King County in 2001.  

The variables are (in column order):

"gender"        M = male, F = female baby
"plural"        1 = singleton, 2 = twin, 3 = triplet
"age"           mother's age in years
"race"          race categories (for mother)
"parity"        number of previous live born infants
"married"       Y = yes, N = no
"bwt"           birth weight in grams
"smokeN"        number of cigarettes smoked per day during pregnancy
"drinkN"        number of alcoholic drinks per week during pregnancy
"firstep"       1 = participant in program; 0 = did not participate
"welfare"       1 = participant in public assistance program; 0 = did not 
"smoker"        Y = yes, N = no, U = unknown
"drinker"       Y = yes, N = no, U = unknown 
"wpre"          mother's weight in pounds prior to pregnancy
"wgain"         mother's weight gain in pounds during pregnancy
"education"     highest grade completed (add 12 + 1 / year of college)
"gestation"     weeks from last menses to birth of child