[Nihon koshu eisei zasshi] Japanese journal of public health最新文献

{"title":"[Association between social networking service usage time and breakfast consumption patterns among Japanese university students: Analysis using breakfast, brunch, and skipping categories].","authors":"Yumiko Iwase","doi":"10.11236/jph.25-096","DOIUrl":"https://doi.org/10.11236/jph.25-096","url":null,"abstract":"<p><p>Objectives　Extensive social networking service (SNS) use has been associated with unhealthy lifestyle behaviors among university students. Breakfast skipping raises concerns regarding reduced academic performance and inadequate nutritional status. Although many students consume brunch as a breakfast substitute, prior studies have rarely distinguished it from breakfast. This study examined associations between SNS usage time and breakfast consumption patterns among Japanese university students and assessed whether breakfast consumption patterns are associated with socioeconomic and psychological factors.Methods　A secondary analysis was conducted on 20,171 records from the 58th Student Life Survey (2022), obtained from the Institute of Social Science, University of Tokyo. Participants were undergraduate university students in Japan. The dependent variable was breakfast consumption pattern. Participants were categorized into the breakfast (before 9:00 a.m.), brunch (9:00-11:00 a.m.), and skipping (nothing in the morning) groups. The independent variable was SNS usage time. Multinomial logistic regression analysis was performed adjusting for demographic, socioeconomic, and psychological factors.Results　Multinomial logistic regression analysis showed that each additional SNS hour significantly increased odds for the brunch (odds ratio [OR]: 1.14, 95% confidence interval [CI]: 1.04-1.25, P < 0.001) and skipping (OR: 1.10, 95% CI: 1.01-1.19, P = 0.021) groups compared to the breakfast group. In the brunch group, the highest odds were observed for living away from home and having part-time employment. In the skipping group, the highest odds were observed for living away from home and poor living conditions; having no one to consult also showed significantly higher odds. Science and medical students as well as females had significantly lower odds in both groups.Conclusion　Longer SNS use was significantly associated with greater odds of being in the brunch or skipping groups compared to the breakfast group. In the brunch group, higher odds were associated with living away from home and part-time employment. In the skipping group, higher odds were observed for financial difficulty and having no one to consult. These findings suggest subsidized breakfast programs and cooking support are needed for the skipping group. Additionally, informational and environmental support from early university years is needed for both groups.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147517248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Evaluating the quality of collaboration in home-based palliative care for patients with terminal cancer: A scoping review].","authors":"Miyuki Yoshida, Kazumi Fujimura, Miyuki Shiomi, Mio Hirose, Airi Fujimoto, Tomoko Nishiyama","doi":"10.11236/jph.25-110","DOIUrl":"https://doi.org/10.11236/jph.25-110","url":null,"abstract":"<p><p>Objectives　To integrate and analyze domestic and international literature on interprofessional collaboration (hereafter, collaboration) in home-based palliative care for patients with terminal cancer, and to support the development of the evaluation of indicators of collaboration.Methods　Medline, CINAHL, Cochrane Library, and Web of Science (via Igaku Chuo Zasshi) were searched using the terms \"terminal cancer\", \"home\", \"palliative care\", \"interprofessional\", and \"indicators\". The retrieved literature was thoroughly reviewed, emphasizing descriptions of the content, outcomes, and evaluation of \"collaboration\". The information obtained was organized according to the Donabedian framework for healthcare quality assessment: Structure (care-supporting resources and systems), Process (collaborative procedures and content), and Outcome (results or changes attributable to collaboration). All processes, from the formulation of the search strategy, to selection and classification of the literature, were conducted through discussion and agreement among the investigators.Results　The initial search identified 159 articles (Medline, 16; CINAHL, 10; Cochrane Library, 0; Web of Science via Igaku Chuo Zasshi, 133), of which 150 were excluded because they did not meet the inclusion criteria. Nine eligible articles were supplemented with 10 articles, yielding 19 articles for analysis. These articles, published between 2001 and 2020, included 13 Japanese and six international studies. The topics included five scale development and validation studies on \"collaboration\", five qualitative studies identifying \"collaboration\" indicators, seven studies evaluating initiatives to strengthen \"collaboration\", and two studies evaluating the introduction of \"collaboration\" tools. Structure indicators included the care system, team relationships, information sharing, operations, community-based comprehensive collaboration systems, and 24-hour drug supply systems. Process indicators included visualization of the collaboration process, unification of team policies, formation of team trust, active collaborative behaviors by professionals, and educational support to enhance collaborative capacity. Outcome indicators included subjective evaluations from patients, families, and diverse professionals, and objective evaluations based on performance data.Conclusion　The Structure, Process, and Outcome indicators identified in this study provide a foundation for developing measures to evaluate and promote collaboration. Future studies should standardize these indicators and assess their relationships with outcome measures to develop evaluation tools that enhance collaboration in clinical practice.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147517226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Development and preliminary validation of the \"Skill Checklist\" to enhance lifestyle modification skills among registered dietitians].","authors":"Misa Adachi, Asuka Suzuki, Mariko Watanabe, Kazue Yamaoka","doi":"10.11236/jph.25-135","DOIUrl":"https://doi.org/10.11236/jph.25-135","url":null,"abstract":"<p><p>Objective　To improve the effectiveness of nutritional interventions by registered dietitians (RDs) in preventing and managing lifestyle-related diseases, this study developed and evaluated the \"Skill Checklist,\" a tool supporting the structured individual-based lifestyle education (SILE) lifestyle improvement program based on the Nutrition Care Process.Methods　The \"Skill Checklist\" enables RDs to conduct seven self-assessments across 12 weeks at each SILE program stage. Twenty-five RDs were assessed for Nutrition Skill Score reliability and validity and inter-rater reliability of three independent evaluators. Construct validity was examined through score differences by experience level. Reproducibility was tested in 21 RDs using Spearman's correlation at 1-week intervals. A nutritional counseling survey was conducted at baseline and 12 weeks.Results　Of the 24 RDs who completed the study, 75% worked in pharmacies. Experience level (< 3 vs. ≥ 3 years) and monthly counseling frequency (< 10 vs. ≥ 10) were balanced. Cronbach's alpha for the Nutrition Skill Score was 0.907. Construct validity was supported by significantly higher evaluator scores for more experienced RDs (P = 0.024, P = 0.023). Inter-rater reliability (ICC (2,1)) was 0.758 (95% CI: 0.610-0.906). Reproducibility was confirmed (n = 21, r = 0.689, P < 0.001). Week-12 scores were significantly higher than baseline in self-assessments and evaluator ratings (P = 0.004, P < 0.001), remaining significant after covariate adjustment (P = 0.002, P < 0.001). RDs reporting successful counseling increased from 25.0% to 58.3%, while those reporting difficulty perceiving effectiveness decreased from 83.3% to 45.8%.Conclusion　This study demonstrated the reliability and validity of the \"Skill Checklist.\" The tool may help RDs visualize and strengthen nutritional intervention and lifestyle modification competencies.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147517228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Structure and challenges of meal provision systems by residential type in Japanese children's homes].","authors":"Hiroko Yoshida, Hiromi Ishida, Nobuko Murayama","doi":"10.11236/jph.25-106","DOIUrl":"https://doi.org/10.11236/jph.25-106","url":null,"abstract":"<p><p>Objective　Children's homes provide a stable living environment for children without guardians or those who have experienced abuse. In Japan, there is a movement toward smaller-scale residential care facilities to realize \"a more homelike environment.\" This study considered meal provision within children's daily living spaces as a component of the home environment, aimed to classify children's homes into four residential types and examined the characteristics and challenges of their meal provision systems.Methods　In January 2022, a nationwide questionnaire survey was conducted in 606 children's homes (500 responses, 82.5%). The analysis focused on directly operated facilities in which in-house staff were responsible for meal provision. Facilities were categorized into four residential types based on their configuration;(a) no unit,(b) large unit (>8 children), (c) small unit (≤8 children), and(d) branch-type small-scale group care (located outside the main facility).The classification considered meal preparation location and method (\"centralized cooking in one kitchen\" or \"unit-based cooking\") and occupations involved in meal provision. In facilities with unit kitchens, their use was categorized (\"cooked from all raw ingredients\" or \"partially cooked such as only rice\"), and compared by cooking style.Results　Data from 420 directly operated facilities, (680 residential units; 99 no-units, 78 large units, 296 small units, and 207 branch-type units) were analyzed. Facilities that used centralized cooking were common in no-unit (100.0%) and large unit (83.3%) types, but less common in branch-type units (23.2%). Contrastingly, unit-based cooking was most prevalent in branch-type units (74.9%). Facilities using unit kitchens to cook all meals from raw ingredients were significantly more common among those using unit-based cooking than among those using centralized cooking (P < .001). Childcare workers and nursery teachers were significantly more involved in meal provision in branch-type units, whereas registered dietitians/dietitians were significantly less involved (P < .001).Conclusion　Meal provision systems differed by residential type. Branch-type small-scale group care units, which provide a more home-like environment, relied heavily on childcare workers and nursery teachers for meal provision, whereas the involvement of dietitians is limited. These findings highlight the need for meal support systems that balance homelike environments with trained professional support.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147516596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Association of regularity of dinnertime and elapsed time from dinner to going to bed with subjective sleep quality among locally-living working-age men and women].","authors":"Chie Kato, Takashi Kimura, Shigekazu Ukawa, Koshi Nakamura, Emiko Okada, Sachiko Sasaki, Akiko Tamakoshi","doi":"10.11236/jph.24-138","DOIUrl":"10.11236/jph.24-138","url":null,"abstract":"<p><p>Objective　This study aimed to clarify the relationship between the regularity of dinnertime, elapsed time between dinner and bedtime (elapsed time after dinner), and subjective sleep quality among locally-living working-age men and women.Methods　Data from the DOSANCO Health Study conducted in 2015 in Suttsu-chou, Hokkaido, Japan, were used. Of the 2,638 residents aged ≥3 years, excluding nursing home residents, 773 aged 20-69 years and those who met the inclusion criteria were analyzed. The regularity of dinnertime was divided into two groups; \"regular\" and \"irregular.\" Furthermore, the regular group was divided into five groups according to the time elapsed between dinner and bedtime; \"≤2 h,\" \"＞2 h, ≤3 h,\" \"＞3 h, ≤4 h,\" \"＞4 h, ≤5 h,\" and \"＞5 h.\" Subjective sleep quality was assessed using the Japanese version of the Pittsburgh Sleep Quality Index, with a total score of ≥6 being \"subjective poor sleep quality.\" Prevalence ratios (PR) and 95% confidence intervals (CI) were calculated by sex and age group (20-39, 40-59, and 60-69 years) using log-binomial regression analysis with SAS software (version 9.4; SAS Institute Inc.).Results　The PR (95% CI) for subjective poor sleep quality was significantly higher in the irregular group (men; 1.71 [1.28-2.28], women; 1.50 [1.12-2.00]) than the regular group. Among the regular group, the PR (95% CI) for subjective poor sleep quality compared with the \"＞3 h, ≤4 h\" group as the reference was 1.81 (1.17-2.80) in the \"＞5 h\" group of women. The group with a longer elapsed time from dinner had higher subjective poor sleep quality in women, particularly in women aged 40-59 years.Conclusions　Irregular dinnertimes or a lifestyle with a long elapsed time between dinner and bedtime, despite regular dinnertimes, may be associated with poor sleep quality.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"247-256"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145440159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Perceived challenges and status of the transition of patients from specified pediatric chronic diseases to designated intractable diseases: A survey of local government officials].","authors":"Masako Miura, Katsutoshi Tanaka, Shota Matsunaga, Tetsuo Komori, Tomihiro Imai","doi":"10.11236/jph.25-038","DOIUrl":"10.11236/jph.25-038","url":null,"abstract":"<p><p>Objective　The transition of patients from specified pediatric chronic diseases (SPCD) to designated intractable diseases (DID) in Japan presents several challenges; however, few studies have addressed this issue. This study aimed to examine the status and challenges of the transition as perceived by local government officials and to compare transition rates between prefectures, with and without transitional care support centers (TCSCs).Methods　A web-based survey was conducted between September 25 and October 20, 2023, targeting 1,772 public health offices, health centers, and welfare offices across Japan. Data from personnel responsible for SPCD and DID programs, including their professional backgrounds, involvement in the programs, awareness of TCSCs, and the estimated percentage of patients who were unable to transition to the DID system in FY2022, were collected. Officials were also questioned on their perceptions of the challenges faced by patients who could not transition, and the status of support systems. The transition rates were compared between prefectures, with and without TCSCs.Results　A total of 1,026 responses were obtained (response rate: 58.0%). Among respondents, 18.9% were aware of TCSCs, while awareness in prefectures without TCSCs was notably lower at 12.4%. The estimated percentage of patients who did not transition to a DID was 53.0%. This was significantly higher in prefectures without TCSCs (54.8%) than in prefectures with TCSCs (49.7%) (t = 2.67, P = .008). The most frequently cited challenges included increased financial burden due to failure to transition (82.8%), difficulties in maintaining continuous care at adult medical institutions (71.5%), and insufficient support for autonomy and independence from medical, administrative, and educational systems (65.4%). These issues were recognized more frequently by medical professionals than by clerical staff.Conclusion　This study suggests that approximately 50% of patients with SPCDs may be unable to transition to a DID program, with a higher failure rate observed in prefectures without TCSCs. The presence of TCSCs may facilitate a smoother transition. However, awareness of these centers remains limited, particularly in areas without them. Raising awareness and promoting the establishment of TCSCs may assist in improving support during the transition period.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"280-291"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145775299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Systematizing public health nursing intervention skills in Japan: An intervention-wheel-based approach].","authors":"Riho Iwasaki-Motegi, Kazuko Saeki, Sachiko Oki, Michiyo Hirano","doi":"10.11236/jph.24-130","DOIUrl":"10.11236/jph.24-130","url":null,"abstract":"<p><p>Objectives　To acquire public health nursing skills, it is important to comprehensively address and name all the skills. This study focused on intervention skills, aiming to systematize intervention skill items and structures in public health nursing. Furthermore, based on the Intervention Wheel-an intervention model for public health nursing systematized in Minnesota, USA-the characteristics of intervention skills in Japan were considered.Methods　Public health nursing interventions were systematized into three stages: draft creation, validity verification, and public health nursing intervention skills system development. Thirty-two meetings of approximately two hours each were conducted, attended by four investigators with experience in public health nursing practice and research. The draft creation had four stages: (1) extracting public health nursing intervention skills from public health nursing textbooks and the Intervention Wheel and organizing them inductively; (2) using the Intervention Wheel to deductively examine skill items; (3) considering the structural framework of intervention skills based on the functional aspects of public health nursing and incorporating the Intervention Wheel; and (4) illustrating a model of public health nursing intervention skills. Ten experts in public health nursing practice, education, and research were interviewed to verify the validity of the original framework and intervention skills. The results from the interviews were revised through discussions with the investigators to formulate a system of intervention skills for public health nursing. The Intervention Wheel functioned as a reference for the characteristics of these skills in Japan.Results　Twenty-one major skills required for public health nursing interventions in Japan were identified: social resource management and development; care system construction; outsourcing projects and quality monitoring; and systems, community, and case management. These skills differ from those of the Intervention Wheel. It was also demonstrated that these skills function at the system, community, and individual and family levels to solve health problems. Intervention skills functioned at all three levels; however, some were ineffective at the system or individual and family levels.Conclusion　Twenty-one major public health nursing intervention skills were identified to address health issues, ensuring that each of the three levels (system, community, and individual/family) function differently. In addition, the scenarios where these skills perform different yet complementary functions across the three levels were organized and systematized.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"270-279"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145440144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Error factors and sustainable utility of COVID-19 wastewater surveillance in Japan].","authors":"Fumiya Inoue, Asami Anzai, Fuminari Miura, Ryo Kinoshita, Satoru Arai, Taro Kamigaki, Motoi Suzuki, Daisuke Yoneoka","doi":"10.11236/jph.25-048","DOIUrl":"10.11236/jph.25-048","url":null,"abstract":"<p><p>Objectives　In response to the coronavirus disease 2019 (COVID-19) pandemic, the usefulness of wastewater surveillance has been highlighted. Wastewater surveillance can detect pathogens that circulate throughout society, including asymptomatic infections, thereby allowing early outbreak warnings. However, several error factors must be considered when applying wastewater surveillance for COVID-19. This study examines the key error factors in COVID-19 wastewater surveillance and discusses their future applicability in Japan.Methods　A literature search was conducted using PubMed and Ichushi-Web to review the studies on wastewater surveillance for COVID-19. The search included combinations of the keywords \"wastewater,\" \"sewage,\" \"COVID-19,\" \"SARS-CoV-2,\" \"fecal/urine,\" and \"surveillance/survey/detection.\" A narrative review was conducted based on the search results.Results　A total of 2,108 articles were identified in PubMed, of which 19 were included in this review. In addition, six academic articles were retrieved from Google Scholar, and two government reports and guidelines were included in this review. The sampling methods and environmental factors such as wastewater temperature, transit time, and composition can be potential sources of error in wastewater surveillance. Furthermore, the standardization of these factors is difficult. The prevalence of COVID-19, population size, and population mobility in the target area also influence data interpretation. Additionally, because wastewater surveillance often lacks detailed patient background information such as age, sex, and exact locations of affected individuals, data interpretation can be more challenging than clinical testing-based surveillance, thus potentially limiting its applicability. However, compared to large-scale clinical screening, wastewater surveillance is significantly more cost-effective, rapid, and suitable for continuous monitoring. With regard to statistical analysis, sample normalization is crucial for accurate comparisons across samples, regions, and time periods. A low signal-to-noise ratio during COVID-19 wastewater surveillance requires significant smoothing procedures to extract meaningful signals.Conclusion　Wastewater surveillance for COVID-19 is subject to errors from several sources. Nevertheless, it offers advantages over clinical surveillance that include lower expected costs and capacity for continuous monitoring across broad geographic areas. In conclusion, it is essential to understand the advantages and limitations of both clinical and wastewater surveillance and appropriately integrate both approaches for optimal utilization.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"227-236"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145776732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Intra-household isolation and psychological health among community-dwelling middle-aged and older adults: A cross-sectional analysis from the Wako Cohort Study].","authors":"Hiroshi Murayama, Yuri Yokoyama, Yu Nofuji, Takayuki Ueno, Takumi Abe, Kumiko Nonaka","doi":"10.11236/jph.25-067","DOIUrl":"10.11236/jph.25-067","url":null,"abstract":"<p><p>Objective　Traditionally, families and households have served as stable sources of support and the primary settings of daily life; however, their roles have changed significantly in recent years. This study defined \"intra-household isolation\" as a state in which individuals live with family members or housemates yet experience markedly limited interactions within the household. We examined the association between intra-household isolation and psychological health among community-dwelling middle-aged and older adults.Methods　Data were collected through a mail-in questionnaire as part of the baseline survey of the Wako Cohort Study conducted in 2023, targeting the residents of Wako City, Saitama Prefecture. The mail-in questionnaire comprised two separate surveys for individuals aged 40-64 years and those aged ≥65 years, yielding 2,395 and 6,429 valid responses, respectively, for a total of 8,824 responses. Intra-household isolation was defined as cohabitation with others but spending ＜15 minutes daily conversing with them and being alone at home for most of the time on weekdays, weekends, and holidays. Psychological health outcomes included self-rated health, depression, well-being, and loneliness. We conducted modified Poisson regression and multiple regression analyses, adjusting for demographic factors, socioeconomic status, health behaviors, health status, and social networks outside the household.Results　Among the respondents, 44.7% were male, and the average age was 70.0 years (standard deviation: 12.7). The prevalence of intra-household isolation was 4.7% for all participants (3.2% in those aged 40-64 years and 5.3% in those aged ≥65 years) and 5.8% for cohabiting participants (3.7% in those aged 40-64 years and 6.7% in those aged ≥65 years). The proportion of intra-household isolation was higher in the older age group, and across nearly all age groups, men were more likely to experience intra-household isolation than women. Multivariate analyses revealed that, even after adjusting for social networks outside the household and other covariates, individuals experiencing intra-household isolation had poorer self-rated health, greater depression, lower well-being, and stronger feelings of loneliness than those who lived alone or were not isolated within the household. After examining the interaction terms, we found that the association between intra-household isolation and depression was strong among individuals aged ≥65 years. In contrast, this association was weak among those with strong neighborhood ties and those who frequently interacted with non-cohabiting individuals.Conclusion　The findings suggest that even when cohabiting with others, limited interactions within a household may increase the risk of psychological health deterioration. It is essential to carefully assess not only social interactions outside the household, but also isolation within it.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"257-269"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145776685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cultural adaptation and psychometric assessment of the Japanese version of the Treatment Satisfaction Questionnaire for Medication (TSQM).","authors":"Anzu Yakushiji, Ayumi Morishita, Koki Idehara, Louis Patrick Watanabe, Takeshi Akiyama, Ana Maria Rodriguez-Leboeuf","doi":"10.11236/jph.25-018","DOIUrl":"10.11236/jph.25-018","url":null,"abstract":"<p><p>Objective　Patients with high treatment satisfaction are known to have better treatment compliance and persistence, and the Treatment Satisfaction Questionnaire for Medication (TSQM) is a questionnaire widely used to assess treatment satisfaction. A Japanese version of this questionnaire is available; however, its application is limited. In this study, we aimed to culturally adapt and assess the psychometric properties of a newly developed Japanese version of the TSQM in patients with diabetes or migraine who were prescribed oral and injectable medications in Japan.Methods　The study included two phases; phase I, retranslation and cultural adaptation of the Japanese TSQM, and phase II, psychometric validation of the updated Japanese TSQM. Japanese patients with diabetes or migraine receiving oral and/or injection treatment were involved in the cognitive debriefing interview and psychometric validation. The retranslation and cultural adaptation of the Japanese TSQM were conducted following the process recommended by the ISPOR Task Force. The updated Japanese TSQM, finalized after amendments based on cognitive debriefing interviews, was distributed to patients for psychometric validation. The psychometric properties of the finalized Japanese TSQM were assessed using classical test and Rasch measurement theories.Results　Minor modifications were made to the Japanese TSQM after cognitive debriefing interviews with eight patients. In total, 512 patients completed the final version of the Japanese TSQM. All versions of the Japanese TSQM had moderate reliability, with Cronbach's alpha ranging 0.6-0.9 for each domain and intraclass correlation coefficients for test-retest reliability between 0.5 and 0.6 for most domains. High item-convergent and item-discriminant validity were observed, in which all items had higher correlations with their respective domains than with other domains of the Japanese TSQM. The Rasch measurement theory added additional support to the reliability and validity of the measures as they fit the Rasch models. Additionally, high internal consistency reliability, unidimensionality of the domains, and scale invariance were supported by the values of the person separation index, Chi-square value of each domain, and differential item functioning across patient subgroups, respectively.Conclusion　The Japanese TSQM was successfully updated by revising the complex wording and removing wording specific to oral medications, making it usable for patients regardless of medication type. The updated Japanese TSQM had sufficient reliability and validity and could be used regardless of the disease and mode of administration of medication.</p>","PeriodicalId":72032,"journal":{"name":"[Nihon koshu eisei zasshi] Japanese journal of public health","volume":" ","pages":"237-246"},"PeriodicalIF":0.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145775494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}