Table 1: The numbers of study subjects who reported past or family history of selected chronic diseases and their mean ages at study enrolment.

DiseasesMedical history
OwnFamilyBoth
No.Mean ageNo.Mean ageNo.Mean age

Myocardial infarction11066.766362.86666.3
Stroke7468.244462.62166.0
Diabetes20464.757362.112364.6
Gallbladder disease20364.728060.85363.7
Any of the above45265.0109562.435765.0
None of the above104061.339762.5113561.6