• Virginia Almadana Pacheco, Cristina Benito Bernáldez, Estefanía Luque Crespo, Rafael Perera Louvier, Julio César Rodríguez Fernández, and Agustín S Valido Morales.
• Unidad de Gestión Clínica de Neumología. Hospital Universitario Virgen Macarena, Sevilla, España. Electronic address: virginiacadiz@yahoo.es.
• Aten Primaria. 2020 Oct 1; 52 (8): 523528523-528.

ObjectiveTo determine the deception rate or concordance between the interview on smoking and cooximetry in COPD patients from a monographic consultation.DesignProspective observational study to evaluate the concordance between the values of cooximetry and the response to a clinical interview on smoking.SettingCOPD monographic consultation, Pneumology, Seville.ParticipantsPatients with a confirmed diagnosis of COPD in any degree.InterventionsClinical interview and measurement of carbon monoxide by cooximetry.Main MeasurementsCooximetry values, responses on smoking, sociodemographic variables.Resultsn: 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 < 0.000. 40% of patients confessed not having told the truth. No relationship of this data was found with age, accumulated tobacco consumption or FEV1. A significant relationship with sex was found (deception rate: 31.8% in women vs. 15.2% in men, p 0.017).ConclusionsIn 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.Copyright © 2020 The Authors. Publicado por Elsevier España, S.L.U. All rights reserved.

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