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Total score from the CESD Questionnaire, a high score suggests more severe symptoms. Radloff, L. S. (1977)Search for all CESD Questionnaire variables within this dataset

Item from the Short UPPS-P Impulsive Behavior Scale with a range of 1 (Strongly Agree) to 4 (Strongly Disagree). Coded so higher scores indicate less impulsivity. Cyders et al 2014 (PMID: 24636739) Question text: For each statement, please indicate how much you agree or disagree with the statement. Search for all Short UPPS-P Impulsive Behavior Scale variables within this dataset

This variable checks for Total cholesterol, HDL, LDL, and antihyperlipidemic medication use values to determine presence/absence of hypercholesterolemia.

This variable is the educational status derived from variable groups of the attainment of a high school diploma or an equivalent degree, or not having that degree.

Using the weekly alcohol use cutoffs from alcohol_use_disorder, this variable combines never users and former users into a group called 'no current use'. Definitions of 'low level use' and 'high level use' correspond to those of 'low risk drinker' and 'at-risk drinker' from alcohol_use_disorder.

This variable determines whether or not high or medium activity level has been met based on variable gpaq_pag2008 (all counts).

Calculated - Total score based on an 8-item questionnaires ranking likelihood of dozing off Johns MW 1991 (PubMed ID: 1798888). Scale 0-3 for individual items; 0 to 24 for overall score. Algorithm: The ESS is computed by adding ALL 8 ITEMS (SLEA12A TO SLEA12H). If any item is missing then ESS is missing. Warning: The levels of each item need to be recoded as follows: No chance (from 1 to 0), slight chance (from 2 to 1), moderate chance (from 3 to 2) and high chance (from 4 to 3).Search for all ESS variables within this dataset

Calculated - Total score based on an 8-item questionnaires ranking likelihood of dozing off Johns MW 1991 (PubMed ID: 1798888). Scale 0-3 for individual items; 0 to 24 for overall score. Algorithm: The ESS_SUENO is computed by adding ALL 8 ITEMS (SPEA12A TO SPEA12H). If any item is missing then ESS_SUENO is missing. Warning: The levels of each item need to be recoded as follows: No chance (from 1 to 0), slight chance (from 2 to 1), moderate chance (from 3 to 2) and high chance (from 4 to 3).Search for all ESS variables within this dataset

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

If yes, indicate how many years ago ____ or the year ____ you were diagnosed. (if High blood pressure or hypertension? ="Y")

The next section asks about specific medical problems. Please indicate if you have been told by a doctor that you have or have had any of these conditions: High blood pressure or hypertension