Methods

• Independent Variables

  • Mini Mental State Exam (MMSE)

    General cognitive performance
    
    Scores range 0 - 30,
    < 24 = likely impaired

  • Executive Interview (EXIT25)

    Frontal lobe function
    
    Scores range 0 - 50,
    < 10: normal; � 15: frontal dysfunction

  • Spirometry

    % FEV1 pred: actual FEV1/predicted FEV1 (%)
    
    aFEV1/aFVC: actual FEV1/actual FVC (%)

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