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Fig. 1 | BMC Public Health

Fig. 1

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

Fig. 1

Design of the RESPECT study. A = Arkhangelsk, StP = Saint Petersburg, Q = questionnaire, IPCRG = International Primary Care Respiratory Group, V = visit, S = Study (S1 – cross-sectional, S2 – case-control, S3 – cohort), GOLD = Global Initiative for Chronic Obstructive Lung Disease, COPD = Chronic Obstructive Lung Disease. FEV1 – forced expiratory volume in 1 s, FEV1/FVC = forced expiratory volume in 1 s/forced vital capacity ratio, LLN = lower limit of normal

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BMC Public Health

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