Table 2 Characteristics of the INTEGR COPD study cohort.

From: Colour vision deficiency and sputum colour charts in COPD patients: an exploratory mixed-method study

Feature

Mean (SD) or %

Age

68 (11)

Pack-year history

47 (30)

Male sex

52

Prevalence of comorbidities relevant to CVD

15

FEV1 (L)

1.56 (0.64)

FEV1 % predicted

62.7 (20.5)

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