Gender of child
1 = Male
2 = Female

Marital status
1 = Married
2 = Not Married

Race of mother
0 = Other Nonwhite
1 = White
2 = Black
3 = American Indian
4 = Chinese
5 = Japanese
6 = Hawaiian
7 = Filipino
8 = Other Asian or Pacific Islander

Hispanic origin of mother
C = Cuban
M = Mexican
N = Non-Hispanic
O = Other and Unknown Hispanic
P = Puerto Rican
S = Central/South American
U = Not Classifiable

Yes/No mother smokes
0 = No
1 = Yes