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  1. Article ; Online: Relationship Between Infection or Close Contact With COVID-19 and Workplace Mistreatment Among Japanese Workers: A Cross-sectional Study.

    Sawamoto, Naoya / Okawara, Makoto / Muramatsu, Keiji / Odagami, Kiminori / Mafune, Kosuke / Tateishi, Seiichiro / Tsuji, Mayumi / Ogami, Akira / Fujino, Yoshihisa

    Journal of occupational and environmental medicine

    2024  Volume 66, Issue 4, Page(s) 339–343

    Abstract: Objective: Discriminatory treatment against those with emerging infection is a long-standing problem. The present study investigates whether workers infected or in close contact with COVID-19 were susceptible to workplace mistreatment during the ... ...

    Abstract Objective: Discriminatory treatment against those with emerging infection is a long-standing problem. The present study investigates whether workers infected or in close contact with COVID-19 were susceptible to workplace mistreatment during the pandemic in Japan.
    Methods: This Internet-based cross-sectional study analyzed a total of 18,170 workers aged 20 to 60 years in Japan in December 2020. Odds ratios (ORs) for workplace mistreatment were estimated.
    Results: For workers with close contact or infection, ORs for workplace mistreatment in a model adjusted for socioeconomic factors were 7.64 (95% CI: 5.52-10.6, P < 0.001) and 10.7 (95% CI: 8.44-13.6, P < 0.001), respectively.
    Conclusions: Workers with infection or close contact were significantly more likely to experience workplace mistreatment. Actions against workplace mistreatment for workers with emerging infection are still required.
    MeSH term(s) Humans ; Cross-Sectional Studies ; Japan/epidemiology ; COVID-19/epidemiology ; Workplace ; Socioeconomic Factors
    Language English
    Publishing date 2024-01-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1223932-x
    ISSN 1536-5948 ; 1076-2752
    ISSN (online) 1536-5948
    ISSN 1076-2752
    DOI 10.1097/JOM.0000000000003055
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Effects of the Need for Support From the Workplace and Resilience on Psychological Distress in Japanese Employees: A 1-Year Prospective Study.

    Eguchi, Hisashi / Inoue, Akiomi / Mafune, Kosuke / Tsuji, Mayumi / Tateishi, Seiichiro / Ikegami, Kazunori / Nagata, Tomohisa / Matsugaki, Ryutaro / Fujino, Yoshihisa

    Journal of occupational and environmental medicine

    2024  Volume 66, Issue 5, Page(s) 359–365

    Abstract: Purpose: This study examines workplace support and resilience's influence on psychological distress in Japanese employees.: Method: A 1-year prospective online cohort study was conducted. Logistic regression analyzed prevalence odds ratios and 95% ... ...

    Abstract Purpose: This study examines workplace support and resilience's influence on psychological distress in Japanese employees.
    Method: A 1-year prospective online cohort study was conducted. Logistic regression analyzed prevalence odds ratios and 95% confidence intervals for psychological distress. Participants were grouped based on their support and resilience levels.
    Results: Prevalence odds ratios for psychological distress followed this pattern for low and high resilience groups: "necessary but not received" (prevalence odds ratio and 95% confidence interval for low/high resilience: 9.71, 6.88-13.69 and 4.72, 2.97-7.52, respectively), "received" (6.65, 4.29-10.29 and 2.27, 1.21-4.25), and "not necessary" (4.43, 3.30-5.95 and reference). Workplace support had a stronger impact on psychological distress in low-resilience employees.
    Conclusions: We provided evidence that the combination of the need for support from the workplace and resilience affects psychological distress in employees.
    MeSH term(s) Humans ; Prospective Studies ; Male ; Japan ; Female ; Resilience, Psychological ; Workplace/psychology ; Adult ; Psychological Distress ; Middle Aged ; Social Support ; Surveys and Questionnaires ; Stress, Psychological/psychology ; Stress, Psychological/epidemiology ; Prevalence ; East Asian People
    Language English
    Publishing date 2024-01-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1223932-x
    ISSN 1536-5948 ; 1076-2752
    ISSN (online) 1536-5948
    ISSN 1076-2752
    DOI 10.1097/JOM.0000000000003052
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Spouse Factors Related to the Leave Period of Employees on Temporary Leave for Depression.

    Sugimura, Naoya / Eguchi, Hisashi / Mafune, Kosuke / Okuhara, Takayuki / Hiro, Hisanori

    Journal of UOEH

    2021  Volume 43, Issue 1, Page(s) 41–50

    Abstract: In depression, the health condition of family members (particularly spouses) may influence the reinstatement process of employees on temporary leave. The length of leave from work may reflect the quality of the process leading to the stage of ... ...

    Abstract In depression, the health condition of family members (particularly spouses) may influence the reinstatement process of employees on temporary leave. The length of leave from work may reflect the quality of the process leading to the stage of reinstatement, and a short period to reinstatement may increase the possibility of a smooth reinstatement. In this study we investigated the relationship between spouse factors and length of leave period. The subjects were 63 permanent employees on temporary leave for depression and their spouses. We investigated demographic characteristics, spouse factors, individual factors, household factors, and workplace factors, and extracted the factors related to the length of leave period through hierarchical multiple regression analysis. Results revealed that the Frenchay Activities Index (FAI), a spouse factor, was consistently and significantly related to the length of leave (β = -0.37, P < 0.01). The higher the spouse FAI, the shorter the leave period of employees on temporary leave. In particular, the spouses' leisure activities were related to the leave period, whereas the effects of housework and work were unclear. The results suggest that the assessment and intervention of the spouses' activities of daily living are important in reinstatement support.
    MeSH term(s) Activities of Daily Living ; Adult ; Depression/psychology ; Female ; Humans ; Male ; Middle Aged ; Occupational Health ; Regression Analysis ; Return to Work/statistics & numerical data ; Sick Leave/statistics & numerical data ; Spouses ; Time Factors
    Language English
    Publishing date 2021-03-08
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 632724-2
    ISSN 2187-2864 ; 0387-821X
    ISSN (online) 2187-2864
    ISSN 0387-821X
    DOI 10.7888/juoeh.43.41
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Unclassified subtype of Guillain-Barré syndrome is associated with quick recovery.

    Ohnari, Keiko / Okada, Kazumasa / Mafune, Kosuke / Kusunoki, Susumu / Adachi, Hiroaki

    Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia

    2021  Volume 91, Page(s) 313–318

    Abstract: Electrophysiological classification of Guillain-Barré syndrome (GBS) is important for predicting its clinical course; however, few reports discuss GBS patients who do not conform to the acute inflammatory demyelinating polyneuropathy (AIDP) or acute ... ...

    Abstract Electrophysiological classification of Guillain-Barré syndrome (GBS) is important for predicting its clinical course; however, few reports discuss GBS patients who do not conform to the acute inflammatory demyelinating polyneuropathy (AIDP) or acute motor axonal neuropathy (AMAN) classifications. Therefore, the present study assessed the features of unclassified types of GBS and compared them to those of AIDP and AMAN. We compared clinical symptoms, nerve conduction, and laboratory data among patients with AIDP, AMAN, and unclassified subtypes of GBS, according to criteria developed by Rajabally, Hadden, and Ho. According to the Rajabally criteria, the F wave frequency in the upper and lower extremities was higher in the unclassified subgroup than in the AIDP and AMAN subgroups; however, according to the Hadden and Ho criteria, the F wave frequency in only the lower extremities was higher in the unclassified subgroup than in the other subgroups. The unclassified subgroup showed better prognosis using the Rajabally criteria. Classification with the Rajabally criteria is useful for predicting prognosis and determining treatment in patients with GBS. Moreover, unclassified patients exhibit the quickest recovery.
    MeSH term(s) Guillain-Barre Syndrome/diagnosis ; Guillain-Barre Syndrome/epidemiology ; Humans ; Neural Conduction ; Prognosis
    Language English
    Publishing date 2021-07-28
    Publishing country Scotland
    Document type Journal Article
    ZDB-ID 1193674-5
    ISSN 1532-2653 ; 0967-5868
    ISSN (online) 1532-2653
    ISSN 0967-5868
    DOI 10.1016/j.jocn.2021.07.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Development of chronic kidney disease influenced by serum urate and body mass index based on young-to-middle-aged Japanese men: a propensity score-matched cohort study.

    Kuma, Akihiro / Mafune, Kosuke / Uchino, Bungo / Ochiai, Yoko / Enta, Kazuhiko / Kato, Akihiko

    BMJ open

    2022  Volume 12, Issue 2, Page(s) e049540

    Abstract: Objective: To investigate the association between serum uric acid (SUA) level and body mass index (BMI) on the development of chronic kidney disease (CKD) in working men aged 20-60 years.: Design: Retrospective cohort study.: Setting: Data from ... ...

    Abstract Objective: To investigate the association between serum uric acid (SUA) level and body mass index (BMI) on the development of chronic kidney disease (CKD) in working men aged 20-60 years.
    Design: Retrospective cohort study.
    Setting: Data from employees' annual health check-ups were collected from two companies in 2009 and 2014.
    Participants: A total of 16 708 working men were recruited. We excluded participants with missing essential data (N=7801), who had basal estimated glomerular filtration rate (eGFR) <60.0 mL/min/1.73 m
    Primary outcome: eGFR <60 mL/min/1.73 m
    Results: The cut-off values of SUA for incident CKD were 6.6 mg/dL in both young (20-39 years old) and middle-aged (40-60 years old) men analysed by receiver operator characteristics. ORs for incident CKD were assessed on propensity score-matched (1:1) cohorts. In young participants (N=1938), after propensity score matching, a coexistence of high-level SUA (≥6.6 mg/dL) and overweight (BMI ≥25 kg/m
    Conclusion: These findings suggest that high-level SUA is strongly associated with incident CKD in overweight young adult men.
    MeSH term(s) Adult ; Body Mass Index ; Cohort Studies ; Glomerular Filtration Rate ; Humans ; Japan/epidemiology ; Male ; Middle Aged ; Propensity Score ; Renal Insufficiency, Chronic/epidemiology ; Renal Insufficiency, Chronic/etiology ; Retrospective Studies ; Risk Factors ; Uric Acid ; Young Adult
    Chemical Substances Uric Acid (268B43MJ25)
    Language English
    Publishing date 2022-02-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2599832-8
    ISSN 2044-6055 ; 2044-6055
    ISSN (online) 2044-6055
    ISSN 2044-6055
    DOI 10.1136/bmjopen-2021-049540
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Potential link between high FIB-4 score and chronic kidney disease in metabolically healthy men.

    Kuma, Akihiro / Mafune, Kosuke / Uchino, Bungo / Ochiai, Yoko / Miyamoto, Tetsu / Kato, Akihiko

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 16638

    Abstract: Although the association between non-alcoholic fatty liver disease and chronic kidney disease (CKD) has been well known, it is unclear whether Fibrosis-4 (FIB-4) score is a predictor of CKD development. We performed this retrospective cohort study, with ... ...

    Abstract Although the association between non-alcoholic fatty liver disease and chronic kidney disease (CKD) has been well known, it is unclear whether Fibrosis-4 (FIB-4) score is a predictor of CKD development. We performed this retrospective cohort study, with a longitudinal analysis of 5-year follow-up data from Japanese annual health check-ups. Participants with CKD (estimated glomerular filtration rate [eGFR] < 60 mL/min/1.73 m
    MeSH term(s) Glomerular Filtration Rate ; Humans ; Incidence ; Male ; Non-alcoholic Fatty Liver Disease/complications ; Proteinuria/complications ; Renal Insufficiency, Chronic/complications ; Renal Insufficiency, Chronic/diagnosis ; Renal Insufficiency, Chronic/epidemiology ; Retrospective Studies ; Risk Factors
    Language English
    Publishing date 2022-10-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-21039-0
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  7. Article: Changes in work/sleep patterns due to the COVID-19 pandemic are associated with psychological distress among Japanese workers.

    Tondokoro, Tsukumi / Nakata, Akinori / Tateishi, Seiichiro / Mafune, Kosuke / Tsuji, Mayumi / Ando, Hajime / Odagami, Kiminori / Matsugaki, Ryutaro / Fujino, Yoshihisa

    Frontiers in psychology

    2023  Volume 14, Page(s) 1133498

    Abstract: Objectives: The coronavirus disease 2019 (COVID-19) pandemic has significantly impacted working life quality. This study investigated whether changes in work/sleep patterns due to the pandemic are related to poor psychological status among Japanese ... ...

    Abstract Objectives: The coronavirus disease 2019 (COVID-19) pandemic has significantly impacted working life quality. This study investigated whether changes in work/sleep patterns due to the pandemic are related to poor psychological status among Japanese workers during the third wave of the COVID-19 pandemic (December 2020). We hypothesized that workers who experienced drastic changes in working hours and sleep duration would be at an increased risk of psychological distress.
    Methods: A cross-sectional self-administered Internet survey was conducted that included questions regarding socio-demographics, lifestyle, health, and occupational background and conditions. Multivariable logistic regression models were utilized to examine the association between psychological distress and a combination of changes in working hours and sleep duration.
    Results: Among 25,762 workers, decreased work hours and decreased sleep duration presented 2.59 times higher odds of psychological distress (95% confidence interval [CI] = 2.05-3.28) compared to those who had no changes in work hours combined with unchanged sleep duration (reference group). Increased work hours and decreased sleep duration were associated with 1.98 times higher odds of psychological distress (95% CI = 1.64-2.39).
    Conclusion: Our observations confirmed that decreased sleep duration could be a key factor for psychological distress, irrespective of working hours. Interestingly, workers with a combination of decreased work hours and sleep duration posed the highest risk of psychological distress. Decreased work hours accompanied by financial difficulties in the early stage of the pandemic may have caused decreased sleep duration, resulting in a high prevalence of psychological distress. Our study underlined the importance of sleep management in maintaining workers' mental health, moreover, the need to consider situations and conditions of other daily tasks, such as work hours, for better sleep management.
    Language English
    Publishing date 2023-03-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2023.1133498
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  8. Article ; Online: Job stress and work from home during the COVID-19 pandemic among Japanese workers: a prospective cohort study.

    Ikegami, Kazunori / Ando, Hajime / Mafune, Kosuke / Tsuji, Mayumi / Tateishi, Seiichiro / Odagami, Kiminori / Muramatsu, Keiji / Fujino, Yoshihisa / Ogami, Akira

    Health psychology and behavioral medicine

    2023  Volume 11, Issue 1, Page(s) 2163248

    Abstract: Objectives: The work style reforms and the coronavirus disease pandemic in Japan have prompted efforts toward teleworking, mainly work from home (WFH). This study aimed to prospectively evaluate the impact of WFH on job stress among Japanese workers.: ...

    Abstract Objectives: The work style reforms and the coronavirus disease pandemic in Japan have prompted efforts toward teleworking, mainly work from home (WFH). This study aimed to prospectively evaluate the impact of WFH on job stress among Japanese workers.
    Methods: This online survey-based prospective cohort study was conducted from December 2020 (baseline) to December 2021 (1-year follow-up) using self-administered questionnaires. At baseline, 27,036 participants completed the questionnaires, whereas 18,560 (68.7%) participated in the 1-year follow-up. After excluding the 11,604 participants who left or changed workplaces within 1 year or who were physical laborers and hospitality workers, data from 6,956 participants were analyzed. We asked participants about WFH frequency at baseline and conducted a follow-up using the Brief Job Stress Questionnaire (BJSQ). Participants were divided into four groups according to WFH frequency. The odds ratios of poor states of the association of the four subscales (job demand, job control, supervisor support, and coworker support) determined by the BJSQ with WFH frequency were estimated using a multilevel logistic model.
    Results: In both the gender-age adjusted and multivariate models, compared to the non-WFH group, the medium and low WFH groups were less likely to have poor job control, whereas the high WFH group were likely to have similar levels as the non-WFH group. In both models, compared to non-WFH participants, the high WFH group were more likely to have poor supervisor and coworker support.
    Conclusions: High-frequency WFH requires further attention, because it may increase job stress by exacerbating deficits of social support in the workplace. Medium- and low-frequency WFH workers were more likely to have satisfactory job control; therefore, limiting WFH to three or fewer days per week may lead to better job stress management.
    Language English
    Publishing date 2023-01-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 2720684-1
    ISSN 2164-2850 ; 2164-2850
    ISSN (online) 2164-2850
    ISSN 2164-2850
    DOI 10.1080/21642850.2022.2163248
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Impact of COVID-19 Infection on Work Functioning in Japanese Workers: A Prospective Cohort Study.

    Okawara, Makoto / Hirashima, Keiki / Igarashi, Yu / Mafune, Kosuke / Muramatsu, Keiji / Nagata, Tomohisa / Tsuji, Mayumi / Ogami, Akira / Fujino, Yoshihisa

    Safety and health at work

    2023  Volume 14, Issue 4, Page(s) 445–450

    Abstract: Background: The impact of COVID-19 infection on workers' work function persists even after the acute phase of the infection. We studied this phenomenon in Japanese workers.: Methods: We conducted a one-year prospective cohort study online, starting ... ...

    Abstract Background: The impact of COVID-19 infection on workers' work function persists even after the acute phase of the infection. We studied this phenomenon in Japanese workers.
    Methods: We conducted a one-year prospective cohort study online, starting with a baseline survey in December 2020. We tracked workers without baseline work functioning impairment and incorporated data from 14,421 eligible individuals into the analysis. We estimated the incidence rate ratio for new onset of work functioning impairment due to COVID-19 infection during follow-up, using mixed-effects Poisson regression analysis with robust variance.
    Results: Participants reporting infection between January and December 2021 showed a significantly higher incidence of new work functioning impairment (adjusted incidence rate ratio: 2.18, 95% confidence interval: 1.75-2.71,
    Conclusion: COVID-19-infected workers may continue to experience work difficulties due to persistent, post-acute infection symptoms. Companies and society must urgently provide rehabilitation and social support for people with persistent symptoms, recognizing that COVID-19 is not just a transient acute infection.
    Language English
    Publishing date 2023-10-05
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2592798-X
    ISSN 2093-7997 ; 2093-7911
    ISSN (online) 2093-7997
    ISSN 2093-7911
    DOI 10.1016/j.shaw.2023.10.004
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  10. Article ; Online: Sociodemographic factors affecting not receiving COVID-19 vaccine in Japan among people who originally intended to vaccinate: a prospective cohort study.

    Matsuyama, Akiko / Mori, Takahiro / Ogami, Akira / Mafune, Kosuke / Tateishi, Seiichiro / Kuwamura, Mami / Muramatsu, Keiji / Fujino, Yoshihisa / Mori, Koji

    Frontiers in public health

    2023  Volume 11, Page(s) 1290187

    Abstract: Objective: Vaccine hesitancy is a major issue for acquiring herd immunity. However, some individuals may go unvaccinated owing to inhibitory factors other than vaccine hesitancy. If there is even a small number of such people, support is needed for ... ...

    Abstract Objective: Vaccine hesitancy is a major issue for acquiring herd immunity. However, some individuals may go unvaccinated owing to inhibitory factors other than vaccine hesitancy. If there is even a small number of such people, support is needed for equitable vaccine distribution and acquiring herd immunity. We investigated sociodemographic factors that affected not undergoing COVID-19 vaccination in Japan among individuals who had strong intention to vaccinate before beginning the vaccination.
    Methods: We conducted this prospective cohort study on workers aged 20-65 years from December 2020 (baseline), to December 2021 using a self-administered questionnaire survey. There were 27,036 participants at baseline and 18,560 at follow-up. We included 6,955 participants who answered yes to this question at baseline: "Would you like to receive a COVID-19 vaccine as soon as it becomes available?" We applied multilevel logistic regression analyses to examine the association between sociodemographic factors and being unvaccinated at follow-up.
    Results: In all, 289 participants (4.2%) went unvaccinated. The odds ratios (ORs) for being unvaccinated were significantly higher for participants aged 30-39 and 40-49 than those aged 60-65 years. Being divorced, widowed, or single, having low income, and having COVID-19 infection experience also had higher ORs.
    Discussion: We found that some participants who initially had strong intention to vaccinate may have gone unvaccinated owing to vaccine side effects and the financial impact of absenteeism due to side effects. It is necessary to provide information repeatedly about the need for vaccination as well as social support to ensure that those who intend to vaccinate are able to do so when aiming for acquiring herd immunity through vaccination against COVID-19 as well as other potential infection pandemics in the future.
    MeSH term(s) Humans ; COVID-19 Vaccines ; COVID-19/epidemiology ; COVID-19/prevention & control ; Japan/epidemiology ; Sociodemographic Factors ; Prospective Studies ; Vaccination
    Chemical Substances COVID-19 Vaccines
    Language English
    Publishing date 2023-12-06
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2711781-9
    ISSN 2296-2565 ; 2296-2565
    ISSN (online) 2296-2565
    ISSN 2296-2565
    DOI 10.3389/fpubh.2023.1290187
    Database MEDical Literature Analysis and Retrieval System OnLINE

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