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Fig. 4 | BMC Public Health

Fig. 4

From: The RESPECT study: RESearch on the PrEvalence and the diagnosis of COPD and its Tobacco-related etiology: a study protocol

Fig. 4

Age distribution in the RESPECT and in the general population. Data for the general population extracted and calculated from the Russian Population Census (for the North-West region of Russian Federation): http://www.gks.ru/free_doc/new_site/perepis2010/croc/perepis_itogi1612.htm. *Significant difference (P < .05) between the two populations within the age group (p-value for Pearson Chi-square test).

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BMC Public Health

ISSN: 1471-2458

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