[Do COPD patients lie about their smoking habit?].

Abstract

To determine the deception rate or concordance between the interview on smoking and cooximetry in COPD patients from a monographic consultation. Prospective observational study to evaluate the concordance between the values of cooximetry and the response to a clinical interview on smoking. COPD monographic consultation, Pneumology, Seville. Patients with a confirmed diagnosis of COPD in any degree. Clinical interview and measurement of carbon monoxide by cooximetry. Cooximetry values, responses on smoking, sociodemographic variables. n: 169. 107 patients presented values less than or equal to 6 ppm compared to 62 with values greater than 6 ppm, determining a prevalence of active smoking of 36.7%. The deception rate was 19.5% of the total sample (24.3% of all those who claimed not to smoke), with a Cohen kappa of 0.48 and p In spite of our attempts to make patients stop smoking, a considerable deception rate was found in our consultation; higher among women, recent ex-smokers or in the process of abandonment, so it would be essential to incorporate objective measures such as the cooximeter in the approach of this type of patient.