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Asia Journal of Public Health : Volume 6 No. 1, June 2015. 2-9
doi: Vol.6 No.1

Screening Accuracy of Peak Flow Meters for Chronic Obstructive Pulmonary Disease among Thai People at Risk in a Community

Piyawan Kuwalairat* Win Winit-Watjana** Sudruthai Rattanaopas*** Nakanchaya Nawawatcharin****

ABSTRACT: Objective: This study aimed to determine the reliability and accuracy of peak flow meter for COPD screening in at-risk Thai population in a community. Materials and Methods: A cross-sectional screening study was conducted between February and May 2013. The participants were Thai residents aged 40 or over, smoker or ex-smoker, exposed to a polluted environment or who had a productive cough. They were interviewed and asked to blow the peak expiratory meters with the peak expiratory flow rate (PEFR) cut-off point less than 62% of the predicted. COPD was then confirmed by ambulatory spirometer. All indexes of the screening accuracy were computed and presented with 95% confidence intervals. Results: A total of 330 participants completed the study. Of these, 62 cases were confirmed as having COPD; the prevalence rate was thus 18.8%. The peak flow meters were reliable for screening COPD with high sensitivity (90.3%; 95% CI: 80.1%
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*Department of Pharmacy, Paknum-Chumphon Hospital, Chumphon, Thailand
**Department of Allied Health (Pharmacy Program), College of Health Sciences, University of Bahrain, Manama, Kingdom of Bahrain
***Medical staff organization, Paknum-Chumphon Hospital, Chumphon, Thailand
****Department of Nursing, Paknum-Chumphon Hospital, Chumphon, Thailand

Corresponding author, E-mail:
Accepted 30 April 2015