First CHD Event
1 = No CHD
2 = Sudden Death
3 = NonFatalMI
5 = Fatal MI
6 = Other CHD

Day of Death
1 = Sunday
2 = Monday
3 = Tuesday
4 = Wednesday
5 = Thursday
6 = Friday
7 = Saturday
9 = Missing

Status at Ten Years
0 = Alive
1 = Dead

Family History of CHD
N = No
Y = Yes

Incidence of Coronary Heart Disease
0 = none
1 = chd

family history of CHD
0 = no family history
1 = family history

1 = Grammar School
2 = High School
3 = College