Table 1 Reports on work hours and blood pressure
Year of publication | Authors | Outcome measure | Brief summary |
|---|---|---|---|
Positive relationship | |||
 1996 | Hayashi et al. [113] | Ambulatory blood pressure | Within a group of white-collar workers, blood pressure was significantly higher when working overtime than that in a control day |
 1998 | Iwasaki et al. [114] | Clinic blood pressure | In salesmen, blood pressure was higher in longer working subgroup than shorter subgroup in 50–60 years of age group |
 2006 | Yang et al. [115] | Self-reported hypertension | Compared with people who work <40 h per week, individuals with weekly working hours of 40 h, between 41 and 50 h, 51 h, or over were 14%, 17%, and 29% more likely to report hypertension |
 2007 | Artazcoz et al. [116] | Self-reported hypertension | Only women, long working hours were associated with increased odds ratio for hypertension |
 2012 | Nakamura et al. [117] | Clinic blood pressure | Increased monthly overtime work was associated with dose-dependent increase in diastolic blood pressure in normotensive male assembly-line workers, but not in clerks and engineers/special technicians |
 2014 | Yoo et al. [118] | Incident hypertension | With an increase in weekly working hours, the hazard ratio for incident hypertension was significantly increased in wage workers |
Negative relationship | |||
 2001 | Nakanishi et al. [119] | Incident hypertension | The daily working hours were significantly and negatively associated with the risk of incident hypertension in white-collar workers |
 2006 | Wada et al. [120] | Incident hypertension | Men with monthly overtime of 50 h or over demonstrated a lower risk of hypertension compared with those with monthly overtime <50 h |
 2014 | Imai et al. [121] | Presence of hypertension | The odds ratio for having hypertension was dose-dependently decreased with an increase in monthly overtime |
No relationship | |||
 2001 | Park et al. [122] | Clinic blood pressure | In multiple linear regression analysis, weekly working hours were not related to blood pressure in engineers |
 2009 | Pimenta et al. [123] | Incident hypertension | The weekly work hours were not related to incident hypertension in either gender of Spanish prospective cohort of university graduates |
