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)