Estimation of the benchmark duration of alternating shift work associated with increased total cholesterol levels among male Japanese workers

Suwazono, Yasushi; Uetani, Mirei; Oishi, Minoru; Tanaka, Kumihiko; Morimoto, Hideki; Nakada, Satoru; Sakata, Kouichi

doi:10.5271/sjweh.2893

Cited by 8 publications

(11 citation statements)

References 27 publications

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“…The adopted BMR of 5% or 10% in the present study is in line with those used in recent occupational health studies (Suwazono et al, , 2010. Generally a BMR of 5% or 10% has been used in calculations of BMD (Sand et al, 2008).…”

Section: Discussionmentioning

confidence: 78%

“…Using multiple logistic regression, it has also been shown that it is possible to take into account the effect of potential covariates (Budtz-Jørgensen et al, 2001). We used this approach in a previous study to examine the relationship between the duration of shiftwork and serum total cholesterol to show the BMDLs for duration of shiftwork in workers aged in their 40s ranged between 21 and 28 yrs for various relative increases in total cholesterol level (Suwazono et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The benchmark dose (BMD) method is used increasingly in occupational medicine (Suwazono et al, , 2010 to define the exposure that corresponds to a certain change in response compared to background exposure (Crump, 1984;Sand et al, 2008;U.S. EPA, 1995).…”

Section: Introductionmentioning

confidence: 99%

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Estimation of the Benchmark Duration of Shiftwork Associated With Weight Gain in Male Japanese Workers

Tanaka

Sakata²,

Oishi³

et al. 2010

Chronobiology International

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The authors estimated the benchmark durations (BMDs) and their 95% lower confidence limit (BMDL) for the reference duration of shiftwork for weight gain. A 14-yr prospective cohort study was conducted in male workers at a Japanese steel company (n = 7254) who had received annual health check-ups between 1991 and 2005. The endpoints in the study were either a 5%, 7.5%, or 10% increase in body mass index (BMI) during the period of observation, compared to the BMI at entry. The association between the duration of shiftwork and weight gain was investigated using multivariate pooled logistic regression analyses with stepwise selection of covariates, including age, BMI measured during the study, drinking and smoking habits, and habitual exercise. The BMDL/BMD for shiftwork in subjects aged in their 40s or ≥50 yrs was estimated using benchmark responses (BMRs) of 5% or 10% and parameters for the duration of shiftwork and other covariates. For workers aged in their 40s, the BMDL/BMD for shiftwork with a BMR of 5% was 18.6/23.0 yrs (≥7.5%) and 16.9/19.4 yrs (≥10%). For workers aged ≥50 yrs, the BMDL/BMD with a BMR of 5% was 22.9/28.2 yrs (≥7.5%) and 20.6/23.6 yrs (≥10%). The reference duration of shiftwork that associated with weight gain was shown to be at least 17 yrs in middle-aged workers. Special attention should be paid to prevent weight gain at an earlier stage and not when this increase in weight has become apparent.

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

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Estimation of the Benchmark Duration of Shiftwork Associated With Weight Gain in Male Japanese Workers

Tanaka

Sakata²,

Oishi³

et al. 2010

Chronobiology International

Self Cite

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“…It is of considerable importance to determine the duration of shift work to induce a potential adverse effect. The benchmark dose (BMD) is a useful approach to estimate an explicit risk level using information from the entire dose-response curve (21)(22)(23). The investigators found that BMD levels for duration of shift work in workers aged 40 ranged from 21-28 years for various degrees varying from 5-15% of relative increases in total cholesterol (21).…”

Section: Yong Et Almentioning

confidence: 99%

“…The benchmark dose (BMD) is a useful approach to estimate an explicit risk level using information from the entire dose-response curve (21)(22)(23). The investigators found that BMD levels for duration of shift work in workers aged 40 ranged from 21-28 years for various degrees varying from 5-15% of relative increases in total cholesterol (21). Analogously, benchmark duration of ≥17.8 years for a shift worker aged 50 years for an increase of 15% HbA1c was estimated (22).…”

Section: Yong Et Almentioning

confidence: 99%

Primary selection into shift work and change of cardiovascular risk profile

Yong

Germann²,

Lang³

et al. 2015

Scand J Work Environ Health

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Shift work and cardiovascular risk factors: New knowledge from the past decade

Esquirol

Fougère

Ruidavets

et al. 2011

Archives of Cardiovascular Diseases

142

121

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Cardiovascular diseases remain a major public health problem. The involvement of several occupational factors has recently been discussed, notably the organization of work schedules, e.g. shift work. To analyse the progress of knowledge on the relationship between cardiovascular risk factors and shift work. A review of English-language literature dealing with the link between cardiovascular factors and shift workers (published during 2000-2010) was conducted. Studies published in the past 10 years tend to document an impact of shift work on blood pressure, lipid profile (triglyceride levels), metabolic syndrome and, possibly, body mass index. However, the consequences on glucose metabolism are unclear. These results are not yet firmly established, but are supported by strong hypotheses. Some advice could reasonably be proposed to guide the clinical practitioner.

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Estimation of the benchmark duration of alternating shift work associated with increased total cholesterol levels among male Japanese workers

Abstract: The following articles refer to this text: 2010;36(2): 81-84; 2015;41(3):259-267

Cited by 8 publications

References 27 publications

Estimation of the Benchmark Duration of Shiftwork Associated With Weight Gain in Male Japanese Workers

Estimation of the Benchmark Duration of Shiftwork Associated With Weight Gain in Male Japanese Workers

Primary selection into shift work and change of cardiovascular risk profile

Shift work and cardiovascular risk factors: New knowledge from the past decade

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