Control chart for monitoring occupational asthma

Journal of Safety Research
Fazel HayatiBrian J Carnahan

Abstract

Work-related asthma has become the most prevalent occupational respiratory disease in the developed world. Occupational asthma is thought to affect 5%-10% of people worldwide. The first step in the diagnosis of occupational asthma is to establish work-relatedness. Although considerable research has been conducted in the area of occupational asthma, no simple, effective, and statistically sound method has been developed that can be used as an initial step to effectively identify the workers at risk for occupational asthma. The purpose of this research was to investigate whether Shewhart control chart method can be used as an effective method to detect occupational asthma. Forty-five workers who completed the study and provided usable peak expiratory flow (a lung function marker) recordings while at work and away from work were included in this study. Control charts were developed using Shewhart's Method. The lower control limit of at work control chart (LCL(W)) was compared to each subject's Personal Best (PB) value. Reviewing the results of this comparison showed LCL(W)<60% PB to have a sensitivity of 85.71%, specificity of 87.50%, and an error rate of 13.33%. When the subjects suspected for false positive and false negative di...Continue Reading

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Citations

Jun 19, 2010·Journal of Evaluation in Clinical Practice·Tsung-Tai ChenKuo-Piao Chung
Aug 2, 2011·Journal of Clinical Epidemiology·Robin M TurnerHelen K Reddel
Apr 2, 2014·Journal of Speech, Language, and Hearing Research : JSLHR·Hamid KarimiAnn Packman
Jan 26, 2008·American Journal of Industrial Medicine·Fazel HayatiCatherine Lemiere
Jun 5, 2007·International Journal for Quality in Health Care : Journal of the International Society for Quality in Health Care·Ruth TennantUna Martin
Apr 12, 2018·Revista da Associação Médica Brasileira·José Domingos NetoUNKNOWN Brazilian Association of Occupational Medicine (ANAMT)

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