The impact of lung function case-finding tests on smoking behaviour: A nested randomised trial within a case-finding cohort.

Rationale Aims And Objectives: Increasing awareness of people's lung health through the use of lung function tests or symptom-based questionnaires is a potential method to aid smoking cessation. We investigated the impact of case-finding lung function tests for chronic obstructive pulmonary disease on smoking behaviour.

Methods: Our trial used a novel waiting list randomised controlled trial design, nested within a case-finding cohort study.

Determining the optimal approach to identifying individuals with chronic obstructive pulmonary disease: The DOC study.

Rationale, Aims, And Objectives: Early identification of chronic obstructive pulmonary disease (COPD) results in patients receiving appropriate management for their condition at an earlier stage in their disease. The determining the optimal approach to identifying individuals with chronic obstructive pulmonary disease (DOC) study was a case-finding study to enhance early identification of COPD in primary care, which evaluated the diagnostic accuracy of a series of simple lung function tests and symptom-based case-finding questionnaires.

Methods: Current smokers aged 35 or more were invited to undertake a series of case-finding tools, which comprised lung function tests (specifically, spirometry, microspirometry, peak flow meter, and WheezoMeter) and several case-finding questionnaires.