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Determining the Optimal approach to identifying individuals with Chronic obstructive pulmonary disease

The Determining the Optimal approach to identifying individuals with Chronic obstructive pulmonary disease (DOC) Study is a COPD case-finding study which uses a waiting list randomised trial design, funded by the Department of Health. The aim is to identify the most effective case-finding tool for COPD in the primary care setting, and also to evaluate the impact of receiving lung function tests on smoking behaviour. The study involves current smokers aged 35 years or more registered at GP practices in the York and Hull area undertaking lung function tests and symptom-based case-finding questionnaires.