Name | Label | Folder | |
---|---|---|---|
airflow_limitation
Airflow Limitation (pre FEV1/FVC<70 only)
|
Airflow Limitation (pre FEV1/FVC<70 only)
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
airflow_obstruction
Obstructive Lung Disease suspect
|
Obstructive Lung Disease suspect
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
asthma_c4
4-level grouped Asthma Status
|
4-level grouped Asthma Status | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_c4_md
4-level grouped Asthma Status - by MD diagnosis
|
4-level grouped Asthma Status - by MD diagnosis | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_curr
Current Asthma
|
Current Asthma | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_curr_md
Currently have asthma with ever MD diagnosis
|
Currently have asthma with ever MD diagnosis | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_ever
Ever had Asthma (self-report)
|
Ever had Asthma (self-report) | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_ever_md
Ever had asthma with MD diagnosis
|
Ever had asthma with MD diagnosis | Clinical Data/Diagnostic Studies/Lung Function | |
asthma_meds
Asthma Med Use - self/scanned (curr asthma by MD diag)
|
Asthma Med Use - self/scanned (curr asthma by MD diag)
This variable combines scanned/transcribed anti-asthmatic medication use with self-report asthma medication use. |
Clinical Data/Diagnostic Studies/Lung Function | |
bd_response_abs
Bronchodilator Responsive by 15% change
|
Bronchodilator Responsive by 15% change
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
copd_by_bd
COPD by BD Test
|
COPD by BD Test
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
copd_by_bd_allpre
COPD by BD Test (for all valid PRE_BD)
|
COPD by BD Test (for all valid PRE_BD)
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
copd_ever
Self-report of ever had COPD/Emph or CB
|
Self-report of ever had COPD/Emph or CB | Clinical Data/Diagnostic Studies/Lung Function | |
copd_meds
COPD Med Use - self/scanned (ever COPD by MD diag)
|
COPD Med Use - self/scanned (ever COPD by MD diag)
This variable combines scanned/transcribed anti-asthmatic medication use with self-report COPD medication use. |
Clinical Data/Diagnostic Studies/Lung Function | |
copd_self
Self-report of ever had COPD/Emph
|
Self-report of ever had COPD/Emph | Clinical Data/Diagnostic Studies/Lung Function | |
fev1_fvc_ratio
FEV1/FVC Ratio
|
FEV1/FVC Ratio
This variable is the ratio of forced expiratory volume in one minute (FEV1 ) to forced vital capacity (FVC) expressed as a percentage. |
Clinical Data/Diagnostic Studies/Lung Function | |
mrc_cb
Chronic Productive Cough 3+ mths in 2+ yrs
|
Chronic Productive Cough 3+ mths in 2+ yrs | Clinical Data/Diagnostic Studies/Lung Function | |
phlegm
Phlegm day/night 3 months in a row
|
Phlegm day/night 3 months in a row | Clinical Data/Diagnostic Studies/Lung Function | |
pneumonia
Pneumonia
|
Pneumonia | Clinical Data/Diagnostic Studies/Lung Function | |
postbd_expected
Post-BD Expected (among valid spirometry
|
Post-BD Expected (among valid spirometry
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%. |
Clinical Data/Diagnostic Studies/Lung Function | |
postbd_prebd_diff
Post(FEV1%pred)-Pre(FEV1%pred)
|
Post(FEV1%pred)-Pre(FEV1%pred)
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). |
Clinical Data/Diagnostic Studies/Lung Function | |
postbd_prebd_diff_gt12_v2
Post(FEV1%pred)-Pre(FEV1%pred)>=12% (pre FEV1/FVC<70 only)
|
Post(FEV1%pred)-Pre(FEV1%pred)>=12% (pre FEV1/FVC<70 only)
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). |
Clinical Data/Diagnostic Studies/Lung Function | |
valid_spirometry
Valid Spirometry Studies (Pre)
|
Valid Spirometry Studies (Pre)
This variable is an overall data quality indicator derived by the pulmonary reading center on the adequacy study for use. |
Clinical Data/Diagnostic Studies/Lung Function | |
valid_spirometry_postbd
Valid Spirometry Studies (Post BD)
|
Valid Spirometry Studies (Post BD)
This variable is an overall data quality indicator derived by the pulmonary reading center on the adequacy study for use. |
Clinical Data/Diagnostic Studies/Lung Function | |
valid_spirometry_postbd_v2
Valid post-spirometry (A-D grading) adjusted for unexpected BDs
|
Valid post-spirometry (A-D grading) adjusted for unexpected BDs
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. |
Clinical Data/Diagnostic Studies/Lung Function | |
wheeze_last12
Wheezing in last 12 months
|
Wheezing in last 12 months | Clinical Data/Diagnostic Studies/Lung Function | |
wheeze_sb
Wheezing ever with shortness of breath
|
Wheezing ever with shortness of breath | Clinical Data/Diagnostic Studies/Lung Function | |
digitsymbol
Digit Symbo Substitution Score (NEEA14)
|
Digit Symbo Substitution Score (NEEA14)
This variable is for the score of the digit symbol substitution test. Only defined for participants who took a neurocognitive assessment (NEE form). |
Clinical Data/Diagnostic Studies/Neurocognitive | |
ecg_maj
Major ECG Abnormalities
|
Major ECG Abnormalities
This variable is defined only for participants that have ECG data. |
Clinical Data/Diagnostic Studies/Neurocognitive | |
ecg_min
Minor ECG Abnormalities
|
Minor ECG Abnormalities
This variable is defined only for participants that have ECG data. |
Clinical Data/Diagnostic Studies/Neurocognitive | |
no_disability_6item
No Diability on NEEA5-7
|
No Diability on NEEA5-7 | Clinical Data/Diagnostic Studies/Neurocognitive | |
sevlt_3trials
SEVTL, Sum of 3 Trials (NEEA8=10)
|
SEVTL, Sum of 3 Trials (NEEA8=10)
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). |
Clinical Data/Diagnostic Studies/Neurocognitive | |
sevlt_recall
SEVLT, Delay Recall (NEEA11 with re-coding)
|
SEVLT, Delay Recall (NEEA11 with re-coding)
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). |
Clinical Data/Diagnostic Studies/Neurocognitive | |
total_6item
Total Score on 6 Item Screener (with re-coding)
|
Total Score on 6 Item Screener (with re-coding)
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). |
Clinical Data/Diagnostic Studies/Neurocognitive | |
wordfreq
Word Frequency (A+F) (NEEA12-13)
|
Word Frequency (A+F) (NEEA12-13)
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). |
Clinical Data/Diagnostic Studies/Neurocognitive |