Publications by authors named "Mai Iwanaga"
School bullying victimization may deteriorate job satisfaction as well as life satisfaction. This study assessed the effects of school bullying on job satisfaction in middle-age. We used data collected in 1965 (when the participants were aged 7 yr), 1969 (11 yr), and 2008 (50 yr), from a 50-yr prospective study of the 1958 British Birth Cohort.
View Article and Find Full Text PDFObjectives: This systematic review aimed to assess the association between psychosocial factors in the workplace and menstrual abnormalities or fertility, focusing on literature implementing a prospective cohort design.
Methods: We searched MEDLINE, EMBASE, PsycINFO, PsycARTICLES, and Japan Medical Abstracts Society electronic databases for studies published from inception to February 26, 2020, and updated the search in PubMed on May 29, 2024. Inclusion criteria were (P) adult female workers (over 18 years old), (E) presence of adverse psychosocial factors at work, (C) absence of adverse psychosocial factors at work, and (O) any menstrual cycle disorders, menstrual-related symptoms, or fertility issues.
Fidelity assessments can contribute to maintaining the adherence to the individual placement and support (IPS) model, which enhances vocational outcomes for individuals with mental illness worldwide. While independent reviews are standard, self-assessments could broaden the implementation of IPS. This study aimed to evaluate reviewer-rated and self-rated fidelity assessments using the Japanese version of the Individualized Supported Employment Fidelity Scale (JiSEF), and to compare the two assessment methods in terms of their correlations with employment outcomes in Japan.
View Article and Find Full Text PDFIntroduction: Individuals with mental illness and their families often undergo their recovery process in their communities. This study explored the long-term outcome trajectories of individuals and families who received case management services provided by multidisciplinary outreach teams in a community setting. The primary objective of this study was to determine whether trajectories of subjective quality of life (QoL) related to personal recovery were linked to those clinical and societal outcomes and changes in outreach service frequency.
View Article and Find Full Text PDFAim: This study aimed to clarify the association between treatment status (untreated or treated) at the start of community mental health outreach services and service intensity.
Methods: This retrospective cohort study was conducted using the Tokorozawa City mental health outreach service users' data. Treatment status at the start of service (exposure variable) and the service intensity (outcome variables) were taken from clinical records.
Article Synopsis
- The text outlines the importance of participatory organizational interventions for improving psychosocial working conditions and highlights a lack of systematic reviews on their impact on mental health and work performance.
- The study aims to conduct a systematic review and meta-analysis using specific criteria (PICO) to evaluate the effects of these interventions, focusing on workers’ mental health and job performance.
- Researchers will search multiple electronic databases for relevant studies, independently assess study quality, and conduct statistical analyses to determine the overall effects and potential biases in the findings.
Article Synopsis
- The study compared two versions of the WHODAS 2.0 (12-item and 36-item) for assessing disability among users of community mental health services in Japan over a year.
- Results showed that total scores and certain domain scores (like cognition and participation) decreased significantly over time for both versions, indicating an improvement in disability assessment.
- Strong correlations were observed between scores from the two versions, although some specific domains (mobility, self-care, and participation) showed significant differences, highlighting varied assessment outcomes.
Aims: In order to uphold and enhance the emergency psychiatric care system, a thorough comprehension of the characteristics of patients who require a high-acuity psychiatry unit is indispensable. We aimed to clarify the most important predictors of the need for a high-acuity psychiatry unit using a random forest model.
Methods: This cross-sectional study encompassed patients admitted to psychiatric emergency hospitals at 161 medical institutions across Japan between December 8, 2022, and January 31, 2023.
Article Synopsis
- The study aimed to systematically review the effects of long-term hospitalization on individuals with severe mental illness, focusing on readmission rates as the main outcome.
- It examined studies involving participants aged 18 to 64 who were hospitalized for over a year, evaluating readmission rates and additional factors like employment and social participation through various databases.
- Out of 11,999 studies, only three cohort studies were eligible, revealing a 33-55% readmission rate for schizophrenia patients, with notable variability potentially influenced by follow-up duration and community service levels.
Objective: We conducted a systematic review and meta-analysis to evaluate the prospective effect of adverse work-related psychosocial factors on increases in inflammatory markers.
Methods: A systematic literature search was conducted in PubMed, Embase, PsycINFO, PsycARTICLES, and the Japan Medical Abstracts Society database. Studies were eligible for inclusion if they examined associations between work-related psychosocial factors and inflammatory markers (interleukin-6, tumor necrosis factor-alpha, and C-reactive protein), used longitudinal or prospective cohort designs, were conducted among workers, were original articles written in English or Japanese, and were published up to 2017 for the first search, October 2020 for the second, and November 2022 for the third.
The Brief Job Stress Questionnaire (BJSQ) is used widely in occupational health studies and practice. Summarizing scientific production based on measurement is crucial. This study aimed to systematically review observational studies that used the BJSQ and the New BJSQ to show their usability.
View Article and Find Full Text PDFArticle Synopsis
- Participatory organizational interventions enhance occupational safety and health but lack a widely accepted definition, prompting a study to establish one.
- The researchers developed a draft definition based on existing literature and refined it through multiple discussions and feedback from 15 experts in occupational safety and health.
- The final proposed definition includes planned actions targeting working conditions to promote the well-being of all workers, emphasizing that ideally, all workers should be involved in all intervention steps, although elected representatives may participate in some cases.
Aims: This study aimed to examine whether the moderating role of social support on the negative association between school-age bullying victimization and life satisfaction in middle-age was different by age of victimization.
Methods: A longitudinal study was conducted using data collected at the ages of 7, 11 and 50 years in the 1958 British birth cohort ( = 18,558). Frequency of bullying victimization (never, sometimes, or frequently) was assessed by parental interviews at ages seven and 11.
Introduction: Workplace environment, especially psychosocial factors at work such as job strain, workplace social support, and shift work, may affect the menstrual abnormalities and fertility of female workers. However, the association between psychosocial factors at work and menstrual abnormalities or fertility is not well understood. To address this relationship, we will conduct a systematic review and a meta-analysis of the literature that has utilized a longitudinal or prospective cohort design.
View Article and Find Full Text PDFArticle Synopsis
- * Researchers reviewed 5,450 articles and identified 39 randomized controlled trials (RCTs) that met their criteria, organizing the types of interventions into six categories including physical activity and psychological methods.
- * The meta-analysis of 31 of these studies indicated a significant positive effect of the interventions on SWB, with a standardized mean difference of 0.51, suggesting that various strategies effectively enhance the well-being of employees.
Introduction: The world's population is rapidly ageing, and health among older people is thus an important issue. Several previous studies have reported an association between adverse psychosocial factors at work before retirement and postretirement health. The objective of this systematic review and meta-analysis is to examine the association between psychosocial factors at work and health outcomes after retirement, based on a synthesis of well-designed prospective studies.
View Article and Find Full Text PDFIntroduction: Chronic inflammation may be a mediator for the development of cardiovascular disease (CVD), metabolic diseases and psychotic and neurodegenerative disorders. Meta-analytic associations between work-related psychosocial factors and inflammatory markers have shown that work-related psychosocial factors could affect the flexibility and balance of the immune system. However, few systematic reviews or meta-analyses have investigated the association between work-related psychosocial factors and inflammatory markers.
View Article and Find Full Text PDFObjective: The aim of this study was to investigate the long-term impact of being bullied at school on current psychological distress and work engagement in adulthood among Japanese workers. We hypothesized that workers who had been bullied at school could have higher psychological distress and lower work engagement compared to those who had not been bullied.
Methods: We used data from the Japanese Study on Stratification, Health, Income, and Neighborhood (J-SHINE) project, conducted from July 2010 to February 2011 in Japan.
Aim: The purpose of this study was to clarify the frequencies and sociodemographic and other characteristics around use of herbal medicine as a remedy for mental health problems in Japan.
Methods: Data from the World Mental Health Japan (WMHJ) Survey and US National Comorbidity Survey Replications were analyzed. The WMHJ was conducted in 2002 to 2006, with 4129 respondents.