A 4-Year Follow-up Cohort Study of the Respiratory Functions in Toner-handling Workers

Yanagi, Nobuaki; Kitamura, Hiroko; Mizuno, Mitsuhito; Hata, Koichi; Uchiyama, Tetsuro; Kuga, Hiroaki; Matsushita, Tetsuhiro; Kurosaki, Shizuka; Uehara, Masamichi; Ogami, Akira; Higashi, Toshiaki

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자료유형: 학술저널

저자정보: Yanagi, Nobuaki (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Kitamura, Hiroko (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Mizuno, Mitsuhito (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Hata, Koichi (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Uchiyama, Tetsuro (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Kuga, Hiroaki (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Matsushita, Tetsuhiro (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Kurosaki, Shizuka (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Uehara, Masamichi (Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health) Ogami, Akira (Institute of Industrial and Ecological Sciences, University of Occupation) Higashi, Toshiaki

저널정보: 산업안전보건연구원 Safety and health at work : SH@W Safety and health at work : SH@W 제5권 제4호

발행연도: 2014.1

수록면: 222 - 226 (5page)

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Background: Focusing on the respiratory function for health effect indices, we conducted a cross-sectional study on workers who did and did not handle toner to compare the longitudinal changes. Methods: Among 116 individuals who worked for a Japanese business equipment manufacturer and participated in the study, the analysis included 69 male workers who we were able to follow up for 4 years. We categorized the 40 workers engaged in toner-handling work as the exposed group and the 29 workers not engaged in these tasks as the referent group, and compared their respiratory function test results: peak expiratory flow rate (PEFR), vital capacity (VC), predicted vital capacity (%VC), forced expiratory volume in 1 second ($FEV_1$), and forced expiratory volume in 1 second as a percent of forced vital capacity ($FEV_1%$). Results: The cross-sectional study of the respiratory function test results at the baseline and at the $5^{th}$ year showed no statistically significant differences in PEFR, VC, %VC, $FEV_1$, and $FEV_1%$ between the exposed and referent workers. Also, respiratory function time-course for 4 years was calculated and compared between the groups. No statistically significant differences were shown. Conclusion: Our study does not suggest any toner exposure effects on respiratory function. However, the number of subjects was small in our study; studies of larger populations will be desired in the future.

#cohort analysis #photocopying #respiratory function test

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Yanagi, Nobuaki

소속기관 Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health