THE RELATIONSHIP OF CIGARETTE SMOKING TO CORONARY HEART DISEASE; THE SECOND REPORT OF THE COMBINED EXPERIENCE OF THE ALBANY, NY. AND FRAMINGHAM, MASS. STUDIES.

The relationship of smoking habit to total mortality and to the incidence of new manifestations of coronary heart disease (CHD) has been examined in 2,282 middle-aged men under medical surveillance for ten years in Framingham, Mass, and 1,838 middle-aged men followed for eight years in Albany, NY. It was found that in men who report habitual consumption of 20 or more cigarettes per day the risk of myocardial infarction was about three times...