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  1. Article ; Online: Euthymia scale as a protective factor for depressive symptoms

    Natsu Sasaki / Daisuke Nishi

    BMC Research Notes, Vol 16, Iss 1, Pp 1-

    a one-year follow-up longitudinal study

    2023  Volume 6

    Abstract: Abstract Objectives This study aimed to examine whether a high score on the euthymia scale (ES) predicts a low incidence of depressive symptoms one year later. Methods The baseline online survey was conducted in February 2020, and a follow-up survey was ... ...

    Abstract Abstract Objectives This study aimed to examine whether a high score on the euthymia scale (ES) predicts a low incidence of depressive symptoms one year later. Methods The baseline online survey was conducted in February 2020, and a follow-up survey was done in February 2021. Japanese over 20 years old were enrolled. Respondents who answered both baseline and follow-up, and without depressive symptoms at baseline were included in the analysis. The euthymia scores at baseline was measured by the 10 items of the Japanese version of the ES. Depressive symptoms at follow-up were determined if participants showed either depressive feelings or anhedonia. The odds ratio (OR) was calculated using multivariate logistic regression analysis, adjusting for age, gender, marital status, educational attainment, and clinical visit for depressive episode before the baseline survey. Results The total of 624 participants were analyzed. A total of n = 63 (10.1%) presented depressive symptom at follow-up. A high ES score significantly predicted a lower incidence of depressive symptoms, after adjusting for covariates (aOR = 0.81 [95% confidence interval: 0.72–0.89]). Using the cutoff score retrieved from this data, a high ES score (7 or more) showed the same tendency, compared to a low ES score (< 7) (aOR = 0.46 [0.25–0.83]). Conclusions This study suggests the predictive usefulness of euthymia for subsequent depressive symptoms. Further investigation is needed by employing rigid diagnostic criteria.
    Keywords Well-being ; Depression ; Prevention ; Recurrence ; Psychiatry ; Medicine ; R ; Biology (General) ; QH301-705.5 ; Science (General) ; Q1-390
    Subject code 310 ; 150
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Euthymia scale as a protective factor for depressive symptoms: a one-year follow-up longitudinal study.

    Sasaki, Natsu / Nishi, Daisuke

    BMC research notes

    2023  Volume 16, Issue 1, Page(s) 230

    Abstract: Objectives: This study aimed to examine whether a high score on the euthymia scale (ES) predicts a low incidence of depressive symptoms one year later.: Methods: The baseline online survey was conducted in February 2020, and a follow-up survey was ... ...

    Abstract Objectives: This study aimed to examine whether a high score on the euthymia scale (ES) predicts a low incidence of depressive symptoms one year later.
    Methods: The baseline online survey was conducted in February 2020, and a follow-up survey was done in February 2021. Japanese over 20 years old were enrolled. Respondents who answered both baseline and follow-up, and without depressive symptoms at baseline were included in the analysis. The euthymia scores at baseline was measured by the 10 items of the Japanese version of the ES. Depressive symptoms at follow-up were determined if participants showed either depressive feelings or anhedonia. The odds ratio (OR) was calculated using multivariate logistic regression analysis, adjusting for age, gender, marital status, educational attainment, and clinical visit for depressive episode before the baseline survey.
    Results: The total of 624 participants were analyzed. A total of n = 63 (10.1%) presented depressive symptom at follow-up. A high ES score significantly predicted a lower incidence of depressive symptoms, after adjusting for covariates (aOR = 0.81 [95% confidence interval: 0.72-0.89]). Using the cutoff score retrieved from this data, a high ES score (7 or more) showed the same tendency, compared to a low ES score (< 7) (aOR = 0.46 [0.25-0.83]).
    Conclusions: This study suggests the predictive usefulness of euthymia for subsequent depressive symptoms. Further investigation is needed by employing rigid diagnostic criteria.
    MeSH term(s) Adult ; Humans ; Young Adult ; Academic Success ; Depression/diagnosis ; Depression/epidemiology ; Follow-Up Studies ; Longitudinal Studies ; Protective Factors ; Male ; Female
    Language English
    Publishing date 2023-09-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2413336-X
    ISSN 1756-0500 ; 1756-0500
    ISSN (online) 1756-0500
    ISSN 1756-0500
    DOI 10.1186/s13104-023-06512-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Adverse childhood experiences and living in the socially deprived areas in adulthood: a cross-sectional study of the nationwide data in Japan.

    Sasaki, Natsu / Tabuchi, Takahiro / Fujiwara, Takeo / Nishi, Daisuke

    BMC public health

    2023  Volume 23, Issue 1, Page(s) 1616

    Abstract: Objectives: This study aimed to examine whether having adverse childhood experiences (ACEs) was associated with living in a deprived area in adulthood.: Methods: The cross-sectional study was conducted by using nation-wide data in 2022 of the Japan ... ...

    Abstract Objectives: This study aimed to examine whether having adverse childhood experiences (ACEs) was associated with living in a deprived area in adulthood.
    Methods: The cross-sectional study was conducted by using nation-wide data in 2022 of the Japan COVID-19 and Society Internet Survey (JACSIS). Participants were community dwelling people 18 years or older. ACEs were assessed by Japanese version of 15-items ACE measurement tool (ACE-J). Living condition was measured by Area Deprived Index (ADI) and Densely Inhabited District (DID) based on zip code. Multivariable logistic regression to analyze the associations between ADI and ACE 4 + was conducted, controlling for individual-level factors, such as age, sex, marital status, and education, as an additional analysis.
    Results: The total of 27,916 participants were included in the analysis. The prevalence of emotional neglect, childhood poverty, and school bullying were 38.2%, 26.5%, 20.8%, respectively. 75% of the population had one or more ACE(s). The number of ACEs was associated with significantly higher risk of living in deprived area in the adulthood (p = 0.001). ACEs were not associated with living in density area. The association between ADI and ACEs 4 + was non-significant after controlling the individual-level factors.
    Conclusion: People with higher number of ACEs tend to live in deprived areas in adulthood. Policy makers in highly deprived areas can apply the trauma-informed approach for the community care and support, which is critical to mitigating deficit perspectives and facilitating comprehensive support for those with ACEs.
    MeSH term(s) Humans ; Cross-Sectional Studies ; Adverse Childhood Experiences ; COVID-19/epidemiology ; Japan/epidemiology ; Administrative Personnel
    Language English
    Publishing date 2023-08-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041338-5
    ISSN 1471-2458 ; 1471-2458
    ISSN (online) 1471-2458
    ISSN 1471-2458
    DOI 10.1186/s12889-023-16557-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Loneliness without distress, chosen isolation (solitude) at the workplace, and mental health and job performance: a cross-sectional study of Japanese employees.

    Sasaki, Natsu / Kuroda, Reiko / Tsuno, Kanami / Imamura, Kotaro / Eguchi, Hisashi / Shimazu, Akihito / Kawakami, Norito

    Industrial health

    2024  

    Abstract: While loneliness and social isolation in the workplace affect the mental health and job performance of employees, the effects of loneliness without distress and solitude (i.e., chosen isolation) on these outcomes are unclear. The cross-sectional ... ...

    Abstract While loneliness and social isolation in the workplace affect the mental health and job performance of employees, the effects of loneliness without distress and solitude (i.e., chosen isolation) on these outcomes are unclear. The cross-sectional association was examined by using online survey of full-time employees in Japan (n=846). The results showed that the "loneliness with distress" group had significantly higher psychological distress and lower job performance than the other groups. Work engagement was lower both in the "loneliness with distress" and "loneliness without distress" groups, compared to the "non-loneliness" group. The "unchosen isolation" and the "solitude" groups had poorer scores of psychological distress, work engagement, and work performance, compared to the "non-isolation" group. The preliminary findings showed that loneliness without distress and solitude were associated with poor levels of mental health and job performance and should become a target of mental health promotion interventions in the workplace.
    Language English
    Publishing date 2024-04-08
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 214185-1
    ISSN 1880-8026 ; 0019-8366
    ISSN (online) 1880-8026
    ISSN 0019-8366
    DOI 10.2486/indhealth.2023-0181
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Implementation of an internet-based stress management program in micro- and small-sized enterprises: a study protocol for a pre-post feasibility study of the effectiveness-implementation hybrid type 2 trial.

    Sasaki, Natsu / Shimazu, Taichi / Takeno, Hajime / Ogawa, Sayaka / Sawada, Utako / Tsutsumi, Akizumi / Imamura, Kotaro

    Pilot and feasibility studies

    2024  Volume 10, Issue 1, Page(s) 56

    Abstract: Background: Although internet-based stress management programs are proven effective in improving mental health among workers, micro- and small-sized enterprises (MSEs), lacking in occupational healthcare services, face challenges implementing them. To ... ...

    Abstract Background: Although internet-based stress management programs are proven effective in improving mental health among workers, micro- and small-sized enterprises (MSEs), lacking in occupational healthcare services, face challenges implementing them. To address this gap, this study will develop the program with stakeholders at MSEs to aim for real-world implementation.
    Objectives: This paper describes a study protocol for a pre-post feasibility study of an effectiveness-implementation hybrid type 2 trial of text-based internet-based programs ("WellBe-LINE") in MSEs with less than 50 employees. This feasibility study primarily aims to evaluate trial methods for future effectiveness-implementation hybrid type 2 trials.
    Methods: For this study protocol, an internet- and text-based self-care intervention program using the LINE app (a popular message tool in Japan) will be prepared according to evidence-based psychoeducational topics. Based on our online survey findings, personalized algorithms will be implemented according to employees' gender, age, and psychological distress levels. A personalized program using a popular pre-existing text app is expected to reduce employees' burdens and be attractive to them, resulting in successful implementation outcomes and mental health benefits. A pre-post design feasibility study will be conducted on ten companies to evaluate trial methods (e.g., recruitment and procedures). The primary outcome will involve individual-level penetration, defined as the proportion of the number of employees who register for the program divided by the total number of invited employees at the company. The progression criterion to go next trial specifies that more than 50% of the recruited companies obtain 60% individual penetration, which is set based on the findings of the prior survey of employees at MSEs and of interviews of stakeholders involved in this study, and will be measured by LINE system. Finally, acceptability, appropriateness, and feasibility will be measured using internet-based questionnaires and interviews.
    Discussion: This pre-post feasibility study for future effectiveness-implementation hybrid type 2 trials will provide in-depth knowledge about the successful implementation of text-based, semi-personalized, self-care mental health interventions in real-world settings using both quantitative and qualitative data.
    Conclusions: This feasibility study will help validate the effectiveness of text-based interventions using a widely used social networking service (SNS) tool for employees in MSEs.
    Trial registration: UMIN clinical trial registration, UMIN000046960. Registered on February 21, 2022. https://center6.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000053570.
    Language English
    Publishing date 2024-04-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2809935-7
    ISSN 2055-5784
    ISSN 2055-5784
    DOI 10.1186/s40814-024-01481-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Long-term influence of unintended pregnancy on psychological distress: a large sample retrospective cross-sectional study.

    Sasaki, Natsu / Ikeda, Mari / Nishi, Daisuke

    Archives of women's mental health

    2022  Volume 25, Issue 6, Page(s) 1119–1127

    Abstract: This study examined the associations between childbirth decisions in women with unintended pregnancies and long-term psychological distress. An online survey of women selected from a representative research panel was conducted in July 2021. Among ... ...

    Abstract This study examined the associations between childbirth decisions in women with unintended pregnancies and long-term psychological distress. An online survey of women selected from a representative research panel was conducted in July 2021. Among participants who experienced an unintended pregnancy, the childbirth decision was categorized: (i) wanted birth, (ii) abortion, (iii) adoption, and (iv) unwanted birth. Participants who made childbirth decisions more than 1 year ago were included. ANCOVA was conducted with psychological distress (Kessler 6) as the dependent variable and education, marital status, years from the decision, age of the first pregnancy, economic situation at the unintended pregnancy, and the number of persons consulted at the unintended pregnancy as covariates. Logistic regression analysis was conducted for high distress (K6 ≥ 13) by adjusting the same covariates. A total of 47,401 respondents participated in the study. Women with an experience of unintended pregnancy experienced more than 1 year before the study were analyzed (n = 7162). Psychological distress was the lowest for wanted birth and increased for abortion, adoption, and unwanted birth. In the adjusted model, abortion was associated with lower distress scores than both adoption and unwanted birth. Compared to the wanted birth, adoption and unwanted birth showed significantly higher levels of distress (adjusted odds ratio [aOR] = 2.03 [95% CI 1.36-3.04], aOR = 1.64 [95% CI 1.04-2.58], respectively). Long-term effects on psychological distress differed according to the childbirth decisions in unintended pregnancy. Healthcare professionals should be aware of this hidden effect of unintended pregnancy experience on women's mental health.
    Language English
    Publishing date 2022-10-28
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 1463529-X
    ISSN 1435-1102 ; 1434-1816
    ISSN (online) 1435-1102
    ISSN 1434-1816
    DOI 10.1007/s00737-022-01273-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Deterioration in Mental Health Under Repeated COVID-19 Outbreaks Greatest in the Less Educated

    Natsu Sasaki / Reiko Kuroda / Kanami Tsuno / Kotaro Imamura / Norito Kawakami

    Journal of Epidemiology, Vol 31, Iss 1, Pp 93-

    A Cohort Study of Japanese Employees

    2021  Volume 96

    Keywords Medicine (General) ; R5-920
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Japan Epidemiological Association
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Reliability and validity of the Japanese version of the Professional Fulfillment Index among healthcare professionals: A validation study.

    Asaoka, Hiroki / Sasaki, Natsu / Koido, Yuichi / Kawashima, Yuzuru / Ikeda, Miki / Miyamoto, Yuki / Nishi, Daisuke

    Journal of occupational health

    2023  Volume 65, Issue 1, Page(s) e12422

    Abstract: Objectives: Translation of the Professional Fulfillment Index (PFI) into Japanese would be more useful than the currently developed scales for appropriately measuring burnout and professional fulfillment in healthcare professionals. This study aimed to ... ...

    Abstract Objectives: Translation of the Professional Fulfillment Index (PFI) into Japanese would be more useful than the currently developed scales for appropriately measuring burnout and professional fulfillment in healthcare professionals. This study aimed to develop the Japanese version of the PFI and examine its internal consistency, structural validity, and convergent validity in healthcare professionals.
    Methods: Healthcare professionals in Japan were recruited online. The survey was conducted from October to November 2022. Internal consistency was tested using Cronbach's α. Structural validity was tested using confirmatory factor analysis (CFA) and exploratory factor analysis (EFA). Convergent validity was tested using Pearson's correlation coefficients, which were calculated between each score of the PFI scale and burnout (the Japanese Burnout Scale: JBS), depressive symptoms (the Patient Health Questionnaire-9), and QOL (the General Health Questionnaire-12).
    Results: The Cronbach's alpha was .91 in professional fulfillment, .80 in burnout: work exhaustion, .90 in burnout: interpersonal disengagement, and .89 in burnout: total score. Confirmatory factor analysis demonstrated a modest fit, and EFA yielded a three-factor structure the same as the original PFI. The all three subscales and total score of burnout were significantly correlated with the scores of all the scales (p < .001; e.g., burnout: work exhaustion correlated emotional exhaustion in JBS, r = .71).
    Conclusions: The Japanese version of the PFI demonstrated acceptable high internal consistency, structural validity, and convergent validity of the scale with a three-factor structure the same as in the original PFI. The Japanese version of PFI proved to be reliable and valid for use in healthcare professionals.
    MeSH term(s) Humans ; Reproducibility of Results ; Quality of Life ; East Asian People ; Surveys and Questionnaires ; Burnout, Professional ; Delivery of Health Care ; Psychometrics
    Language English
    Publishing date 2023-10-09
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 1340985-2
    ISSN 1348-9585 ; 1341-9145
    ISSN (online) 1348-9585
    ISSN 1341-9145
    DOI 10.1002/1348-9585.12422
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The Effect of Perceived Gratitude From Others on Work Engagement: A Cross-Sectional Study.

    Komase, Yu / Watanabe, Kazuhiro / Sasaki, Natsu / Kawakami, Norito

    Journal of occupational and environmental medicine

    2021  Volume 63, Issue 9, Page(s) e592–e595

    Abstract: Objective: This study aimed to examine the effect of perceived gratitude from others on work engagement, adjusting for possible confounders: job demands, job resources (supervisor/coworker support), personal resources (resilience), and gratitude trait.!# ...

    Abstract Objective: This study aimed to examine the effect of perceived gratitude from others on work engagement, adjusting for possible confounders: job demands, job resources (supervisor/coworker support), personal resources (resilience), and gratitude trait.
    Methods: This cross-sectional study conducted a secondary analysis of data from previously published research. Work engagement was measured using the Japanese version of the Utrecht Work Engagement Scale. An original one-item questionnaire measured perceived gratitude from others. A hierarchical linear regression analysis was conducted.
    Results: Hierarchical linear regression showed a significant association between perceived gratitude and work engagement even after controlling for the covariates of occupations, job demands, supervisor support, coworker support, resilience, and gratitude trait (N = 206).
    Conclusions: The association between perceived gratitude and work engagement was independent of job demands, job/personal resources, and gratitude trait, suggesting the direct association.
    MeSH term(s) Cross-Sectional Studies ; Humans ; Job Satisfaction ; Surveys and Questionnaires ; Work Engagement
    Language English
    Publishing date 2021-09-02
    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.0000000000002294
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Working environment at home and mental health in employees working from home in Japan during COVID-19 pandemic: A cross-sectional study.

    Sasaki, Natsu / Kuroda, Reiko / Mikami, Yuta / Tsuno, Kanami / Imamura, Kotaro / Nishi, Daisuke / Kawakami, Norito

    Journal of occupational health

    2023  Volume 65, Issue 1, Page(s) e12410

    Abstract: Objectives: This cross-sectional study aimed to examine the associations of a poor working environment at home with psychological distress and psychosomatic symptoms in employees working from home in Japan during the COVID-19 pandemic.: Methods: The ... ...

    Abstract Objectives: This cross-sectional study aimed to examine the associations of a poor working environment at home with psychological distress and psychosomatic symptoms in employees working from home in Japan during the COVID-19 pandemic.
    Methods: The data obtained in October 2021 from an online cohort of full-time employees (E- COCO- J) were used. Participants who worked from home for at least some days per month were included. The poor working environment at home was assessed using 11 items based on the Japanese Ministry of Health, Labour and Welfare recommended checklist. The score ranged from 0 to 11. Psychological distress and psychosomatic symptoms were measured by the Brief Job Stress Questionnaire (BJSQ). The associations between total scores of poor working environment and outcomes were examined by multiple regression analysis, adjusted by age, sex, education, living with family, frequencies of working from home, company size, job demand, job control, and workplace social support.
    Results: Two hundred twenty-six employees who were working at home were included. The mean of the summed scores of poor working environments at home was 2.75. After adjusting the covariates, summed scores of poor working environments were significantly associated with high psychological distress (standardized β = 0.21, P = .003) and with high psychosomatic symptoms (β = 0.19, P = .005). For each poor environment, lack of ventilation and difficulty staying hydrated or resting were significantly associated with both outcomes.
    Conclusions: Even after adjusting for job stressors and support, working environments at home were associated with employees' mental health. Appropriate measures and education may be needed.
    MeSH term(s) Humans ; Mental Health ; Cross-Sectional Studies ; Working Conditions ; Stress, Psychological/epidemiology ; Stress, Psychological/psychology ; Japan/epidemiology ; Pandemics ; COVID-19/epidemiology ; Workplace/psychology
    Language English
    Publishing date 2023-06-19
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 1340985-2
    ISSN 1348-9585 ; 1341-9145
    ISSN (online) 1348-9585
    ISSN 1341-9145
    DOI 10.1002/1348-9585.12410
    Database MEDical Literature Analysis and Retrieval System OnLINE

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