Several existing Framingham data sets were utilized, including comprehensive data sets on nutrient intake, cardiovascular disease risk factors, clinically verified cardiovascular and cardiopulmonary endpoints and other covariates. The Offspring Exam 3 and 5 nutrition data sets included multiple day assessments of dietary intake which improved the ability to detect relationships of interest. The investigators completed the Framingham Food Habit Questionnaire data set for Exam 5; this instrument included important covariates for the analyses (including vitamin supplement use).