Fig. 5From: The RESPECT study: RESearch on the PrEvalence and the diagnosis of COPD and its Tobacco-related etiology: a study protocolSmoking status for the RESPECT and the general population. Data for the smoking status for the Russian population extracted from Global Adult Tobacco Survey (GATS): Russian Federation 2009. Country report: http://www.who.int/tobacco/surveillance/en_tfi_gats_russian_countryreport.pdf. *Significant difference (P < .05) between the two populations within the sex group (p-value for Pearson Chi-square test)Back to article page