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Validity and reproducibility of self-reported working hours among Japanese male employees

OBJECTIVE: Working long hours is a potential health hazard. Although self-reporting of working hours in various time frames has been used in epidemiologic studies, its validity is unclear. The objective of this study was to examine the validity and reproducibility of self-reported working hours amon...

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Autores principales: Imai, Teppei, Kuwahara, Keisuke, Miyamoto, Toshiaki, Okazaki, Hiroko, Nishihara, Akiko, Kabe, Isamu, Mizoue, Tetsuya, Dohi, Seitaro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Japan Society for Occupational Health 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5356941/
https://www.ncbi.nlm.nih.gov/pubmed/27265530
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author Imai, Teppei
Kuwahara, Keisuke
Miyamoto, Toshiaki
Okazaki, Hiroko
Nishihara, Akiko
Kabe, Isamu
Mizoue, Tetsuya
Dohi, Seitaro
author_facet Imai, Teppei
Kuwahara, Keisuke
Miyamoto, Toshiaki
Okazaki, Hiroko
Nishihara, Akiko
Kabe, Isamu
Mizoue, Tetsuya
Dohi, Seitaro
author_sort Imai, Teppei
collection PubMed
description OBJECTIVE: Working long hours is a potential health hazard. Although self-reporting of working hours in various time frames has been used in epidemiologic studies, its validity is unclear. The objective of this study was to examine the validity and reproducibility of self-reported working hours among Japanese male employees. METHODS: The participants were 164 male employees of four large-scale companies in Japan. For validity, the Spearman correlation between self-reported working hours in the second survey and the working hours recorded by the company was calculated for the following four time frames: daily working hours, monthly overtime working hours in the last month, average overtime working hours in the last 3 months, and the frequency of long working months (≥45 h/month) within the last 12 months. For reproducibility, the intraclass correlation between the first (September 2013) and second surveys (December 2013) was calculated for each of the four time frames. RESULTS: The Spearman correlations between self-reported working hours and those based on company records were 0.74, 0.81, 0.85, and 0.89 for daily, monthly, 3-monthly, and yearly time periods, respectively. The intraclass correlations for self-reported working hours between the two questionnaire surveys were 0.63, 0.66, 0.73, and 0.87 for the respective time frames. CONCLUSIONS: The results of the present study among Japanese male employees suggest that the validity of self-reported working hours is high for all four time frames, whereas the reproducibility is moderate to high.
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spelling pubmed-53569412017-03-23 Validity and reproducibility of self-reported working hours among Japanese male employees Imai, Teppei Kuwahara, Keisuke Miyamoto, Toshiaki Okazaki, Hiroko Nishihara, Akiko Kabe, Isamu Mizoue, Tetsuya Dohi, Seitaro J Occup Health Original OBJECTIVE: Working long hours is a potential health hazard. Although self-reporting of working hours in various time frames has been used in epidemiologic studies, its validity is unclear. The objective of this study was to examine the validity and reproducibility of self-reported working hours among Japanese male employees. METHODS: The participants were 164 male employees of four large-scale companies in Japan. For validity, the Spearman correlation between self-reported working hours in the second survey and the working hours recorded by the company was calculated for the following four time frames: daily working hours, monthly overtime working hours in the last month, average overtime working hours in the last 3 months, and the frequency of long working months (≥45 h/month) within the last 12 months. For reproducibility, the intraclass correlation between the first (September 2013) and second surveys (December 2013) was calculated for each of the four time frames. RESULTS: The Spearman correlations between self-reported working hours and those based on company records were 0.74, 0.81, 0.85, and 0.89 for daily, monthly, 3-monthly, and yearly time periods, respectively. The intraclass correlations for self-reported working hours between the two questionnaire surveys were 0.63, 0.66, 0.73, and 0.87 for the respective time frames. CONCLUSIONS: The results of the present study among Japanese male employees suggest that the validity of self-reported working hours is high for all four time frames, whereas the reproducibility is moderate to high. Japan Society for Occupational Health 2016-06-06 2016-07-20 /pmc/articles/PMC5356941/ /pubmed/27265530 Text en https://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Occupational Health is an Open Access article distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. To view the details of this license, please visit (https://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Original
Imai, Teppei
Kuwahara, Keisuke
Miyamoto, Toshiaki
Okazaki, Hiroko
Nishihara, Akiko
Kabe, Isamu
Mizoue, Tetsuya
Dohi, Seitaro
Validity and reproducibility of self-reported working hours among Japanese male employees
title Validity and reproducibility of self-reported working hours among Japanese male employees
title_full Validity and reproducibility of self-reported working hours among Japanese male employees
title_fullStr Validity and reproducibility of self-reported working hours among Japanese male employees
title_full_unstemmed Validity and reproducibility of self-reported working hours among Japanese male employees
title_short Validity and reproducibility of self-reported working hours among Japanese male employees
title_sort validity and reproducibility of self-reported working hours among japanese male employees
topic Original
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5356941/
https://www.ncbi.nlm.nih.gov/pubmed/27265530
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