ethnicity
0 = non-Hispanic
1 = Hispanic

three race cateories
1 = White
2 = Black or African American
3 = other

parents willing to help with homework
1 = strongly disagree
2 = disagree
3 = neither
4 = agree
5 = strongly agree

Computed - Ever Used Marijuana
0 = no
1 = yes

Breakfast Weekends
0 = I never have breakfast during the weekend
1 = I usually have breakfast on only one day of the weekend
2 = I usually have breakfast on both weekend days

-9 = Missing
0 = 0 days
1 = 1 day
2 = 2 days
3 = 3 days
4 = 4 days
5 = 5 days
6 = 6 days
7 = 7 days