• Mónica Pérez-Ríos, María Isolina Santiago-Pérez, Alberto Malvar, María Jesús García, Bernardo Seoane, Jorge Suanzes, and Xurxo Hervada.
• Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela, España; CIBER de Epidemiología y Salud Pública (CIBERESP), España; Área de Medicina Preventiva y Salud Pública, Universidad de Santiago de Compostela, Santiago de Compostela, España. Electronic address: monica.perez.rios@usc.es.
• Gac Sanit. 2014 Jan 1; 28 (1): 20-4.

ObjectivePrevalence of exposure to environmental tobacco smoke is a valuable index to assess the impact of the laws for tobacco control. The objective of this work is to analyse variations in the prevalence of exposure to environmental tobacco smoke in Galicia (Spain) between 2005, before the Law 28/2005, and 2011, after the law 42/2010.MethodsData were obtained from five population-based independent cross-sectional studies, telephone surveys, developed in Galicia between 2005 and 2011 among population aged 16 to 74 (n=34.419). Self-reported exposure among population aged between 16 and 74 was analysed by setting and tobacco consumption by prevalence with 95% confidence intervals.ResultsEnvironmental tobacco smoke exposure decreased dramatically in Galicia between 2005 and 2011. In 2005, before the Law 28/2005, 95% of the population reported exposure to environmental tobacco smoke compared to 28% in 2011, after the Law 42/2010. Decrease was greater in workplaces in 2006 and in leisure time venues in 2011. After an initial decrease in 2006, exposure at home remains unchanged.ConclusionsAn important reduction in self-reported exposure to environmental tobacco smoke occurred in Galicia in the period 2005-2011, specially after the introduction of Laws 28/2005 and 42/2010. Nevertheless, one in four of the population aged 16 to 74 remained exposed in 2011.Copyright © 2013 SESPAS. Published by Elsevier Espana. All rights reserved.

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