The baseline data dictionaries contain more than 250 computed variables.
See Physical Activity Variable Description and Physical Activity Algorithm Notes for information about how the computed variables for physical activities on Form 34 - Personal Habits are constructed.
See Psychosocial/Behavioral constructs (updated 12-5-13) for information about how these computed variables on Form 37-Thoughts and Feelings, Form 38-Daily Life, Form 151-Activities of Daily Life, and Form 155-Lifestyle Questionnaire are constructed. Note that all participants received Form 37 at baseline, only a subset of participants received Form 38 at three-year follow-up contacts, all participants consented to the Extension Studies received Form 151 annually, and all Extension Study 2010-2015 (ES2) participants received Form 155 in follow-up year 2010-2011. See the Frequency of Data Collection for 1993-2005 table for timing of Form 38 and Frequency for Extension Studies 2005-2010 and 2010-2015 for timing of Forms 151 and 155.
See the 2013 Progress Report, Section 10 - Aging Indicators for a summary of aging indicators and mean Rand-36 physical function score by age.
See Pack Years of Smoking (new as of 6/13/14) for the algorithm used to compute this variable based on Form 34 data.