Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study.
<h4>Objective</h4>Epidemiologic evidence on long working hour and diabetes has been conflicting. We examined the association between overtime work and prevalence of diabetes among Japanese workers.<h4>Methods</h4>The subjects were 40,861 employees (35,170 men and 5,691 women)...
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Public Library of Science (PLoS)
2014
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oai:doaj.org-article:d343e8bdc9094b11b586def1790553f72021-11-18T08:21:09ZOvertime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study.1932-620310.1371/journal.pone.0095732https://doaj.org/article/d343e8bdc9094b11b586def1790553f72014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24787995/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objective</h4>Epidemiologic evidence on long working hour and diabetes has been conflicting. We examined the association between overtime work and prevalence of diabetes among Japanese workers.<h4>Methods</h4>The subjects were 40,861 employees (35,170 men and 5,691 women), aged 16 to 83 years, of 4 companies in Japan. Hours of overtime were assessed using self-reported questionnaires. Diabetes was defined as a fasting plasma glucose ≥126 mg/dl (7.0 mmol/l), hemoglobin A1c ≥6.5% (48 mmol/mol), or current use of anti-diabetic drug. Multiple logistic regression analysis was used to calculate odds ratio of diabetes for each category of overtime.<h4>Results</h4>After adjustment for age, sex, company, smoking, and BMI, there was a suggestion of U-shaped relationship between overtime work and prevalence of diabetes (P for quadratic trend = 0.07). Compared with those who worked <45 hours of overtime per month, the adjusted odds ratios (95% confidence interval) of diabetes were 0.86 (0.77-0.94), 0.69 (0.53-0.89), and 1.03 (0.72-1.46) for those who worked 45-79, 80-99, and ≥100 hours of overtime per month, respectively. In one company (n = 33,807), where other potential confounders including shift work, job position, type of department, alcohol consumption, sleep duration, leisure time physical activity, and family history of diabetes was additionally adjusted for, similar result was obtained (P for quadratic trend = 0.05).<h4>Conclusions</h4>Long hours of overtime work may not be associated with increased prevalence of diabetes among Japanese workers.Keisuke KuwaharaTeppei ImaiAkiko NishiharaTohru NakagawaShuichiro YamamotoToru HondaToshiaki MiyamotoTakeshi KochiMasafumi EguchiAkihiko UeharaReiko KurodaDaisuke OmotoKayo KurotaniNgoc Minh PhamAkiko NanriIsamu KabeTetsuya MizoueNaoki KunugitaSeitaro DohiJapan Epidemiology Collaboration on Occupational Health Study GroupPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 5, p e95732 (2014) |
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DOAJ |
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EN |
| topic |
Medicine R Science Q |
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Medicine R Science Q Keisuke Kuwahara Teppei Imai Akiko Nishihara Tohru Nakagawa Shuichiro Yamamoto Toru Honda Toshiaki Miyamoto Takeshi Kochi Masafumi Eguchi Akihiko Uehara Reiko Kuroda Daisuke Omoto Kayo Kurotani Ngoc Minh Pham Akiko Nanri Isamu Kabe Tetsuya Mizoue Naoki Kunugita Seitaro Dohi Japan Epidemiology Collaboration on Occupational Health Study Group Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| description |
<h4>Objective</h4>Epidemiologic evidence on long working hour and diabetes has been conflicting. We examined the association between overtime work and prevalence of diabetes among Japanese workers.<h4>Methods</h4>The subjects were 40,861 employees (35,170 men and 5,691 women), aged 16 to 83 years, of 4 companies in Japan. Hours of overtime were assessed using self-reported questionnaires. Diabetes was defined as a fasting plasma glucose ≥126 mg/dl (7.0 mmol/l), hemoglobin A1c ≥6.5% (48 mmol/mol), or current use of anti-diabetic drug. Multiple logistic regression analysis was used to calculate odds ratio of diabetes for each category of overtime.<h4>Results</h4>After adjustment for age, sex, company, smoking, and BMI, there was a suggestion of U-shaped relationship between overtime work and prevalence of diabetes (P for quadratic trend = 0.07). Compared with those who worked <45 hours of overtime per month, the adjusted odds ratios (95% confidence interval) of diabetes were 0.86 (0.77-0.94), 0.69 (0.53-0.89), and 1.03 (0.72-1.46) for those who worked 45-79, 80-99, and ≥100 hours of overtime per month, respectively. In one company (n = 33,807), where other potential confounders including shift work, job position, type of department, alcohol consumption, sleep duration, leisure time physical activity, and family history of diabetes was additionally adjusted for, similar result was obtained (P for quadratic trend = 0.05).<h4>Conclusions</h4>Long hours of overtime work may not be associated with increased prevalence of diabetes among Japanese workers. |
| format |
article |
| author |
Keisuke Kuwahara Teppei Imai Akiko Nishihara Tohru Nakagawa Shuichiro Yamamoto Toru Honda Toshiaki Miyamoto Takeshi Kochi Masafumi Eguchi Akihiko Uehara Reiko Kuroda Daisuke Omoto Kayo Kurotani Ngoc Minh Pham Akiko Nanri Isamu Kabe Tetsuya Mizoue Naoki Kunugita Seitaro Dohi Japan Epidemiology Collaboration on Occupational Health Study Group |
| author_facet |
Keisuke Kuwahara Teppei Imai Akiko Nishihara Tohru Nakagawa Shuichiro Yamamoto Toru Honda Toshiaki Miyamoto Takeshi Kochi Masafumi Eguchi Akihiko Uehara Reiko Kuroda Daisuke Omoto Kayo Kurotani Ngoc Minh Pham Akiko Nanri Isamu Kabe Tetsuya Mizoue Naoki Kunugita Seitaro Dohi Japan Epidemiology Collaboration on Occupational Health Study Group |
| author_sort |
Keisuke Kuwahara |
| title |
Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| title_short |
Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| title_full |
Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| title_fullStr |
Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| title_full_unstemmed |
Overtime work and prevalence of diabetes in Japanese employees: Japan epidemiology collaboration on occupational health study. |
| title_sort |
overtime work and prevalence of diabetes in japanese employees: japan epidemiology collaboration on occupational health study. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2014 |
| url |
https://doaj.org/article/d343e8bdc9094b11b586def1790553f7 |
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