Development of a simple binary response questionnaire to identify airflow obstruction in a smoking population in Argentina.

Patients with COPD were older, had a lower body mass index (BMI), a higher median pack-years of smoking, more symptoms (cough, phlegm, dyspnoea, wheezing), biomass smoke at home and professional risks, although the latter variables did not reach statistical significance.

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There was a statistically significant association of symptoms (cough and phlegm; with dyspnoea close to significance), smoking history, age and male sex with the presence of COPD.

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