Long working hours and metabolic syndrome among Japanese men: A cross-sectional study

Tomoko Kobayashi, Etsuji Suzuki, Soshi Takao, Hiroyuki Doi

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Background: The link between long working hours and health has been extensively studied for decades. Despite global concern regarding metabolic syndrome, however, no studies to date have solely evaluated the relationship between long working hours and that syndrome. We therefore examined the association between long working hours and metabolic syndrome in a cross-sectional study. Methods: Between May and October 2009, we collected data from annual health checkups and questionnaires from employees at a manufacturing company in Shizuoka, Japan. Questionnaires were returned by 1,601 workers (response rate: 96.2%; 1,314 men, 287 women). After exclusions, including women because of a lack of overtime work, the analysis was performed for 933 men. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) for metabolic syndrome. Further, we conducted a stratified analysis by age-group (10 h/day, respectively. Similar patterns were obtained when we excluded shift workers from the analysis. In age-stratified analysis, the corresponding ORs among workers aged ≥40 years were 2.02 (95% CI, 1.04-3.90), 1.21 (95% CI, 0.53-2.77), and 3.14 (95% CI, 1.24-7.95). In contrast, no clear association was found among workers aged

Original languageEnglish
Article number395
JournalBMC Public Health
Volume12
Issue number1
DOIs
Publication statusPublished - 2012

Fingerprint

Cross-Sectional Studies
Confidence Intervals
Odds Ratio
Health
Japan
Age Groups
Surveys and Questionnaires

Keywords

  • Japan
  • Long working hours
  • Metabolic syndrome
  • Trigger level

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this

Long working hours and metabolic syndrome among Japanese men : A cross-sectional study. / Kobayashi, Tomoko; Suzuki, Etsuji; Takao, Soshi; Doi, Hiroyuki.

In: BMC Public Health, Vol. 12, No. 1, 395, 2012.

Research output: Contribution to journalArticle

@article{6e4d55f1f8e6489aabdb34868b5dd9e5,
title = "Long working hours and metabolic syndrome among Japanese men: A cross-sectional study",
abstract = "Background: The link between long working hours and health has been extensively studied for decades. Despite global concern regarding metabolic syndrome, however, no studies to date have solely evaluated the relationship between long working hours and that syndrome. We therefore examined the association between long working hours and metabolic syndrome in a cross-sectional study. Methods: Between May and October 2009, we collected data from annual health checkups and questionnaires from employees at a manufacturing company in Shizuoka, Japan. Questionnaires were returned by 1,601 workers (response rate: 96.2{\%}; 1,314 men, 287 women). After exclusions, including women because of a lack of overtime work, the analysis was performed for 933 men. We calculated odds ratios (ORs) and 95{\%} confidence intervals (CIs) for metabolic syndrome. Further, we conducted a stratified analysis by age-group (10 h/day, respectively. Similar patterns were obtained when we excluded shift workers from the analysis. In age-stratified analysis, the corresponding ORs among workers aged ≥40 years were 2.02 (95{\%} CI, 1.04-3.90), 1.21 (95{\%} CI, 0.53-2.77), and 3.14 (95{\%} CI, 1.24-7.95). In contrast, no clear association was found among workers aged",
keywords = "Japan, Long working hours, Metabolic syndrome, Trigger level",
author = "Tomoko Kobayashi and Etsuji Suzuki and Soshi Takao and Hiroyuki Doi",
year = "2012",
doi = "10.1186/1471-2458-12-395",
language = "English",
volume = "12",
journal = "BMC Public Health",
issn = "1471-2458",
publisher = "BioMed Central",
number = "1",

}

TY - JOUR

T1 - Long working hours and metabolic syndrome among Japanese men

T2 - A cross-sectional study

AU - Kobayashi, Tomoko

AU - Suzuki, Etsuji

AU - Takao, Soshi

AU - Doi, Hiroyuki

PY - 2012

Y1 - 2012

N2 - Background: The link between long working hours and health has been extensively studied for decades. Despite global concern regarding metabolic syndrome, however, no studies to date have solely evaluated the relationship between long working hours and that syndrome. We therefore examined the association between long working hours and metabolic syndrome in a cross-sectional study. Methods: Between May and October 2009, we collected data from annual health checkups and questionnaires from employees at a manufacturing company in Shizuoka, Japan. Questionnaires were returned by 1,601 workers (response rate: 96.2%; 1,314 men, 287 women). After exclusions, including women because of a lack of overtime work, the analysis was performed for 933 men. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) for metabolic syndrome. Further, we conducted a stratified analysis by age-group (10 h/day, respectively. Similar patterns were obtained when we excluded shift workers from the analysis. In age-stratified analysis, the corresponding ORs among workers aged ≥40 years were 2.02 (95% CI, 1.04-3.90), 1.21 (95% CI, 0.53-2.77), and 3.14 (95% CI, 1.24-7.95). In contrast, no clear association was found among workers aged

AB - Background: The link between long working hours and health has been extensively studied for decades. Despite global concern regarding metabolic syndrome, however, no studies to date have solely evaluated the relationship between long working hours and that syndrome. We therefore examined the association between long working hours and metabolic syndrome in a cross-sectional study. Methods: Between May and October 2009, we collected data from annual health checkups and questionnaires from employees at a manufacturing company in Shizuoka, Japan. Questionnaires were returned by 1,601 workers (response rate: 96.2%; 1,314 men, 287 women). After exclusions, including women because of a lack of overtime work, the analysis was performed for 933 men. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) for metabolic syndrome. Further, we conducted a stratified analysis by age-group (10 h/day, respectively. Similar patterns were obtained when we excluded shift workers from the analysis. In age-stratified analysis, the corresponding ORs among workers aged ≥40 years were 2.02 (95% CI, 1.04-3.90), 1.21 (95% CI, 0.53-2.77), and 3.14 (95% CI, 1.24-7.95). In contrast, no clear association was found among workers aged

KW - Japan

KW - Long working hours

KW - Metabolic syndrome

KW - Trigger level

UR - http://www.scopus.com/inward/record.url?scp=84861641403&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861641403&partnerID=8YFLogxK

U2 - 10.1186/1471-2458-12-395

DO - 10.1186/1471-2458-12-395

M3 - Article

C2 - 22651100

AN - SCOPUS:84861641403

VL - 12

JO - BMC Public Health

JF - BMC Public Health

SN - 1471-2458

IS - 1

M1 - 395

ER -