A total of 5000 subjects were recruited in total. Subjects were recruited from the Fallon Health Clinic in Worcester, or as part of additional minority recruitment effort in the Worcester area. Although we refer to these data as 'raw' data, the data have undergone considerable data cleaning. In addition, various processing has been completed, including creation of various scores, creation of summary nutrient and energy intake, and creation of summary activity measures in terms of metabolic equivalent scores. Several data sets are described.
Data sets differ by the definition of a basic record, as summarized below.
Vars ID, Qtr. The study protocol collected data every three months on diet, activity, light exposure and lipid values. For each quarter prior to the Lipid measurement, three telephone interviews were scheduled to record 24-hour recall of dietary intake, physical activity, and light exposure. Weather data are given for approximately 3 years over the course of the study. Mixed models fit to 24-Hour data produce predicted values for use in regression models and are contained in the data set Pred.