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Table 1 Selection of the final study population: the ARIC study

From: Occupation and three-year incidence of respiratory symptoms and lung function decline: the ARIC Study

 

No. Included

No. excluded

ARIC study visit 1 participants

15,6491

 

Completed visit 2 examination

14,218

 

Excluded due to missing data

  

   Missing respiratory health data

 

780

   Missing smoking status

 

172

   Missing current or most recent occupation

 

12

Excluded due to self-reported respiratory symptoms2 and conditions3 at visit 1

 

3,289

Excluded due to airway obstruction4 at visit 1

 

474

Excluded due to best visit 1 FVC measurement generated with an exhalation of < 6 seconds

 

524

Final study population

8,967

 
  1. 1Excludes participants who did not consent to the use of their data for non-cardiovascular health research (n = 41), races other than black or white (n = 48), and black participants recruited from suburbs of Minneapolis, Minnesota or Washington County, Maryland (n = 54) excluded to avoid prohibitively small numbers of participants in these strata of race and study center.
  2. 2Chronic cough, chronic phlegm, or wheezing
  3. 3Asthma, chronic bronchitis, emphysema, or other chronic lung disease
  4. 4Defined as FEV1 < LLN and FEV1/FVC < LLN
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Respiratory Research

ISSN: 1465-993X

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