Conference Proceedings

Bronchodilator reversibility as a diagnostic test for adult asthma: findings from the population-based Tasmanian Longitudinal Health Study

Daniel J Tan, Caroline J Lodge, Adrian J Lowe, Dinh S Bui, Gayan Bowatte, David P Johns, Garun S Hamilton, Paul S Thomas, Michael J Abramson, E Haydn Walters, Jennifer L Perret, Shyamali C Dharmage



Bronchodilator reversibility (BDR) is often used as a diagnostic test for adult asthma. However, there has been limited assessment of its diagnostic utility. We aimed to determine the discriminatory accuracy of common BDR cut-offs in the context of current asthma and asthma-COPD overlap (ACO) in a middle-aged community sample. The Tasmanian Longitudinal Health Study is a population-based cohort first studied in 1968 (n=8583). In 2012, participants completed respiratory questionnaires and spirometry (n=3609; mean age 53 years). Receiver operating characteristic (ROC) curves were fitted for current asthma and ACO using continuous BDR measurements. Diagnostic parameters were calculated for diff..

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Funding Acknowledgements

This study was supported by the National Health and Medical Research Council (NHMRC) of Australia; the University of Melbourne, Clifford Craig Foundation; the Victorian, Queensland and Tasmanian Asthma Foundations; Royal Hobart Hospital; Helen MacPherson Smith Trust; and GlaxoSmithKline. The funding bodies had no direct role in the conduct of the study, the collection, management, statistical analysis and interpretation of the data, preparation or approval of the manuscript. D.J. Tan was funded by a NHMRC Postgraduate Scholarship and Royal Australian College of Physicians (RACP) Woolcock Scholarship. Funding information for this article has been deposited with the Crossref Funder Registry.