Assessment Of Chronic Respiratory Symptoms And Lung Function Parameters Among Large Scale Wood Factory Workers In Addis Abeba Ethiopia A Comparative Cross-sectional Study.

Background: Occupational exposure to wood dust could cause numerous health problemsrnincluding chronic respiratory symptoms and reduction of lung function parameters. However,rninformation regarding prevalence of chronic respiratory symptoms and lung function parametersrnamong large scale wood factory workers in Ethiopia is limited. rnObjective: The aim of this study was to assess prevalence of chronic respiratory symptoms, lungrnfunction parameters and associated factors among large scale wood factory workers in AddisrnAbaba, Ethiopia, 2019. rnMethods: An Institution based comparative cross-sectional study was conducted from Februaryrnto April 2019. A total of 464 (232 wood workers and 232 Moha soft drink industry workers asrncontrol group) were included in the study. Chronic respiratory symptoms assessment wasrnconducted in all participants from both groups while lung function test was conducted on 50rnparticipants from each wood factory and soft drink industry. Stratified and simple randomrnsampling was used to select wood workers and controls respectively. Chronic respiratoryrnsymptom was assessed using modified American Thoaracic Socity (ATS) questionnaire whilernlung function test was done using Easy on-pc spirometer. The data was entered in to a computerrnusing Epi-data software version 4.4.2 then exported to SPSS version 23 and analyzed. Poissonrnregression, Multiple linear regressions and Multivariable logistic regression were performed. rnResults: In this study the prevalence ratio of overall chronic respiratory symptoms (PR = 2.17,rn95% CI: 1.51–3.12) was significantly higher among wood workers (65.7%) compared to controlsrn(23.3%). Moreover, sex, previous respiratory disease, not use of respiratory protective devicernand working department were associated with chronic respiratory symptoms. The wood workersrnhad significantly lower FVC and FEVrn1rn compared with controls. rnConclusion: The wood workers had a higher prevalence of chronic respiratory symptoms andrnlower lung function parameters compared with controls, these reducing lung capacity. Therefore,rnrespiratory protective devices should be provided to take preventive measures.

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