Hispanic Community Health Study / Study of Latinos

This variable is based on the empirical evidence from the spirometry that the ratio of FEV1 to FVC is below the level defined by the ATS as indicative of restricted airflow. Defined only for valid spirometries.

This variable is based on the empirical evidence from the spirometry that the ratio of FEV1 to FVC is below the level defined by the ATS as indicative of restricted airflow.

This variable combines scanned/transcribed anti-asthmatic medication use with self-report asthma medication use.

This variable is based on the post-bronchodilator measurement of the FEV1. The airflow remains restricted after the administration of albuterol the person did not respond by greater than a 15% improvement over their first measurement. If PRBA29 is not missing and POBA29 is not missing and PRBA29 > 0 then.

This indicator of COPD is based on the post-bronchodilator measurement of the FEV1 to FVC ratio. The airflow remains restricted after the administration of albuterol.

This variable is based on the post-bronchodilator measurement of the FEV1 to FVC ratio. The airflow remains restricted after the administration of albuterol. This variable is also defined for all participants who did not conduct a post-spirometry exam. Defined only for valid spirometries.

This variable combines scanned/transcribed anti-asthmatic medication use with self-report COPD medication use.

This variable is the ratio of forced expiratory volume in one minute (FEV1 ) to forced vital capacity (FVC) expressed as a percentage.

This variable is a flag for whether a post bronchodilator was expected, based on the premeasurement. A post measurement was expected if the FEV1 to FVC ratio was less than 70% or less than the lower limit of normal for FEV1/FVC%.

This variable is based on the ratio of the measured FEV1 difference from postbronchodilator and pre-bronchodilator exams over the Predicted FEV1 calculated prebronch (both values must be non-missing, and the post-bronchodilator spirometry examinations must be valid).

This variable is based on the ratio of the measured FEV1 difference from postbronchodilator and pre-bronchodilator exams over the Predicted FEV1 calculated prebronch (both values must be non-missing, and the post-bronchodilator spirometry examination must be valid) among participants with pre FEV1/FVC<70 only (ignores LLN comparison).

This variable is an overall data quality indicator derived by the pulmonary reading center on the adequacy study for use.

This variable is an overall data quality indicator derived by the pulmonary reading center on the adequacy study for use.

This variable is a flag for whether a post bronchodilator was valid (grade A-D). Defined only for participants where a post measurement was expected.

This variable is for the score of the digit symbol substitution test. Only defined for participants who took a neurocognitive assessment (NEE form).

This variable is defined only for participants that have ECG data.

This variable is defined only for participants that have ECG data.

This variable is the sum of the scores of the first 3 trials of the SEVLT test. Only defined for participants who took a neurocognitive assessment (NEE form).

This variable is the scores of the 5th delayed recall trial of the SEVLT test. Definition per Dr. Hector Gonzalez. Only defined for participants who took a neurocognitive assessment (NEE form).

This variable is the total score of the 6-item screener, which uses recoding of the original responses per definitions by Dr. Hector Gonzalez. It can take integer values from 0 to 6. Only defined for participants who took a neurocognitive assessment (NEE form).

This variable is the sum of the score of the A and F parts of the Word Fluency test. Only defined for participants who took a neurocognitive assessment (NEE form).

This variable checks for medical history of stroke, mini-stroke or TIA, or balloon angioplasty or surgery to the arteries in the neck.

This variable indicates a self-report of diabetes.

Hypertension is defined here if the systolic or diastolic blood pressure is greater than or equal to 140/90 or if the participant is currently taking antihypertensive medications.

This variable calculates the ratio of total cholesterol by HDL cholesterol.

This variable estimated based on the estimated GFR value and is defined using NIDDK guidelines.

This variable checks for HDL, LDL, and triglyceride values to determine presence/absence of dyslipidemia.

This variable estimates Glomerular filtration rate, based on serum creatinine, and demographics gender, age and race (black vs. nonblack).

This variable estimates Glomerular filtration rate, based on serum cystatin C and no demographic factors.

This variable estimates Glomerular filtration rate, based on serum cystatin C, serum creatinine, and demographics gender, age and race (black vs. nonblack).

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

This variable defines the Homeostasis model assessment of insulin resistance.

This variable defines the Homeostasis model assessment of insulin resistance.

This variable combines fasting glucose results from the central lab that was processed prior to July 5, 2010 (using units of mU/L) with results processed on or after July 5, 2010 (using units of pmol/L) and the overall units are converted to mU/L (1 mU/L = 6 pmol/L).

This variable combines post OGTT glucose results from the central lab that were processed prior to July 5, 2010 (using units of mU/L) with results processed on or after July 5, 2010 (using units of pmol/L) and the overall units are converted to mU/L (1 mU/L = 6 pmol/L).

This variable defines intermittent claudication being present in either leg

This variable is an indicator that defines a composite CVD definition based on the Framingham Study criterion.

This variable defines the Framingham CVD 10 year risk using lab predictors based on the Framingham Study criterion for participants. Individuals 30 to 74 years old only.

This variable groups left and right ABI into 4 categories.

Ankle Brachial Index (ABI) is the average ankle to arm systolic pressures as measured from the left and right sides. The higher of the two ankle measures on the same side is divided by the higher of the two systolic arm pressures to derive the right and left side ABI values. The overall ABI is the mean of those two measurements.

Ankle Brachial Index (ABI) is the average ankle to arm systolic pressures as measured from the left and right sides. The higher of the two ankle measures on the same side is divided by the higher of the two systolic arm pressures to derive the right and left side ABI values.

This variable groups left and right ABI into 4 categories.

Ankle Brachial Index (ABI) is the average ankle to arm systolic pressures as measured from the left and right sides. The higher of the two ankle measures on the same side is divided by the higher of the two systolic arm pressures to derive the right and left side ABI values.

This variable groups left and right ABI into 4 categories.