Lung Function of the Employees of the Cassava Starch Factory


  • Sujirat Prommathet Faculty of Science and Technology, Loei Rajabhat University, 42000, Thailand
  • Kanokthip Sansing Faculty of Science and Technology, Loei Rajabhat University, 42000, Thailand
  • Piyathida Chaiwieng Faculty of Science and Technology, Loei Rajabhat University, 42000, Thailand
  • Netipong Sonpratet Faculty of Science and Technology, Loei Rajabhat University, 42000, Thailand
  • Natchareeya Kumyoung Faculty of Science and Technology, Loei Rajabhat University, 42000, Thailand



Pulmonary Function, Cassava starch factory, Respiratory disease


Exposure to dust results in a decrease in pulmonary function and causes respiratory disease. This time, the researchers conducted a cross-sectional survey to study the pulmonary function of the employees of the cassava starch factory and the changes in the pulmonary function of the factory within 1 month. The sample group was a sample of 98 cassava starch factory employees. The data was collected using a questionnaire and a pulmonary function test. The data was analyzed using descriptive partial statistics, with numbers and percentages. The average difference was compared with the dependent t-test, a specific ratio method that compared the measurement with predictions. The results showed that employees of a cassava starch factory had abnormal pulmonary function, with an FEV1 of 77.55% and an FVC of 69.39%. One month later, when the second pulmonary function test was done, it showed that FEV1 was too high (84.70%). FVC increased abnormally by 80.61%, and when comparing the mean difference of pulmonary function One month apart, there was a statistically significant difference in FEV1 at the level of 0.01 (p-value = 0.001). There was an increase in the level of pulmonary dysfunction to 5.51, and the FVC was significantly different at 0.01 (p-value <0.001). The pulmonary dysfunction level increased by 8.39; the %FEV1 difference was not statistically significant, with a decrease of 14.23


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How to Cite

Prommathet S, Sansing K, Chaiwieng P, Sonpratet N, Kumyoung N. Lung Function of the Employees of the Cassava Starch Factory. Health Sci J Thai [Internet]. 2023 Jul. 17 [cited 2023 Dec. 5];5(3):56-62. Available from:



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