BJPsych Open最新文献

{"title":"Influence of tobacco smoking and alcohol drinking on anxiety in sample of 30 836 individuals in Taiwan Biobank.","authors":"Ya-Ting Wen, Kuan-Po Lien, Jerry Cheng-Yen Lai, Shaw-Ji Chen","doi":"10.1192/bjo.2025.24","DOIUrl":"10.1192/bjo.2025.24","url":null,"abstract":"<p><strong>Background: </strong>Anxiety disorders are among the most common mental disorders worldwide, and most previous studies have focused solely on alcohol drinking or tobacco smoking as risk factors for anxiety.</p><p><strong>Aim: </strong>This study investigated the associations of alcohol drinking and tobacco smoking with anxiety.</p><p><strong>Method: </strong>The data of 30 836 individuals in the Taiwan Biobank were retrieved and analysed in our study. To investigate the associations of tobacco and alcohol use with anxiety, we analysed Patient Health Questionnaire 4 (specifically scores for the first two questions assessing generalised anxiety disorder) results of the included participants and data on their tobacco and alcohol use, and other covariates.</p><p><strong>Results: </strong>Participants who used only tobacco and those using both tobacco and alcohol were more likely to experience anxiety than were those who did not use tobacco or alcohol. Among men, the use of alcohol and/or tobacco was associated with a significantly higher risk of anxiety. Among women, the use of both alcohol and tobacco was associated with a significantly higher risk of anxiety. Older age was associated with a lower risk of anxiety.</p><p><strong>Conclusions: </strong>Tobacco and alcohol use significantly influence the risk of anxiety, particularly in men, and older age also influences this risk. The associations of anxiety with tobacco and alcohol use in women may change because of the increasing prevalence of their use among women in Taiwan in recent years.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 3","pages":"e78"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052577/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Behavioural and psychological symptoms among out-patients with different cognitive states: cross-sectional study.","authors":"Yuhang Li, Junling Huang, Ruiping Liu, Youyang Zhang, Shihao Wu, Xiaoli Liu, Wenlin Ma","doi":"10.1192/bjo.2025.7","DOIUrl":"10.1192/bjo.2025.7","url":null,"abstract":"<p><strong>Background: </strong>The study examines the behavioural and psychological symptoms (BPSs) associated with dementia and mild cognitive impairment (MCI), highlighting the prevalence and impact of these symptoms on individuals with varying levels of cognitive function, particularly in the context of the increasing incidence of dementia among the ageing population.</p><p><strong>Aims: </strong>To explore the BPSs among out-patients with different cognitive statuses.</p><p><strong>Method: </strong>This cross-sectional study enrolled out-patients who attended the cognitive assessment out-patient clinic at our hospital between January 2018 and October 2022. The patients' cognitive status was evaluated using the Neuropsychiatric Inventory (NPI), Activities of Daily Living and the Montreal Cognitive Assessment-Basic scales.</p><p><strong>Results: </strong>The study enrolled 3273 out-patients, including 688 (21%) with cognitively unimpairment, 1831 (56%) with MCI and 754 (23%) with dementia. The NPI score, the percentage of patients with BPSs and the number of BPSs increased with decreasing cognition level. Unordered logistic regression analysis showed that after adjustment of confounding variables, delusions, depression, euphoria and psychomotor alterations were independently associated with MCI. Delusions, agitation, euphoria, apathy, psychomotor alterations and sleep change were independently associated with dementia.</p><p><strong>Conclusions: </strong>NPI scores, the percentage of patients with BPSs and the numbers of BPSs increased with declining cognitive function.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 3","pages":"e73"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052587/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-patient service use before and after a mental health in-patient rehabilitation admission.","authors":"Christian Dalton-Locke, Louise Marston, Justin Yang, David Osborn, Helen Killaspy","doi":"10.1192/bjo.2025.31","DOIUrl":"10.1192/bjo.2025.31","url":null,"abstract":"<p><strong>Background: </strong>In-patient mental health rehabilitation services provide specialist treatment to people with complex psychosis. On average, rehabilitation admissions last around a year and usually follow several years of recurrent and often lengthy psychiatric hospital admissions.</p><p><strong>Aims: </strong>To compare in-patient service use before and after an in-patient rehabilitation admission, using electronic patient healthcare records in one National Health Service Trust in London.</p><p><strong>Method: </strong>We carried out a retrospective cohort study comprised of individuals with an in-patient rehabilitation admission lasting ≥84 days between 1 January 2010 and 30 April 2019, with at least ≥365 days of records available before and after their rehabilitation admission. We used negative binomial regression models to compare the number of in-patient days before and after the rehabilitation admission.</p><p><strong>Results: </strong>A total of 172 individuals met our eligibility criteria. The median percentage of days spent as an in-patient before the rehabilitation admission was 29% (interquartile range 18-52%), and 8% (interquartile range 0-31%) after the admission. The regression model adjusted for potential confounder variables produced an incidence rate ratio of 0.520 (95% CI 0.367-0.737).</p><p><strong>Conclusions: </strong>The rate of in-patient service use was halved in the period after an in-patient rehabilitation admission compared with the period before. This suggests that in-patient rehabilitation is a clinical and cost-effective intervention in the treatment and support of people with complex psychosis.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 3","pages":"e80"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052572/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Examining the relationships of happiness and emotional symptoms, regular exercise and demographic characteristics among adolescents seeking psychological services: cross-sectional study with mediation analysis.","authors":"Na Yin, Jing Zhang, Honghong Ren, Bin Wang, Guoqing Zhao, Yumei Du","doi":"10.1192/bjo.2025.22","DOIUrl":"10.1192/bjo.2025.22","url":null,"abstract":"<p><strong>Background: </strong>Adolescence marks a critical transition period, with significant mental health challenges including anxiety and depression symptoms that affect long-term happiness. There has been a lack of research exploring the factors mediating adolescent happiness.</p><p><strong>Aims: </strong>To investigate the mediating effects of anxiety and depression on adolescent happiness, as well as the contributions of sociodemographic factors.</p><p><strong>Methods: </strong>We recruited 392 adolescents. Anxiety symptoms, depression symptoms and happiness were assessed by the seven-item Generalized Anxiety Disorder scale, nine-item Patient Health Questionnaire and single-item happiness scale, respectively. Self-administered questionnaires were used to collect sociodemographic information.</p><p><strong>Results: </strong>Spearman correlation analysis showed significant negative correlations of happiness with anxiety (<i>r</i> = -0.37, <i>P</i> < 0.0001) and depression (<i>r</i> = -0.47, <i>P</i> < 0.0001). Positive predictors of happiness included quality of parents' marriage (<i>β</i> = 0.12, <i>P</i> = 0.006), regular physical exercise (<i>β</i> = 0.13, <i>P</i> = 0.006) and regular diet (<i>β</i> = 0.10, <i>P</i> = 0.03). Mediation analysis indicated that depressive symptoms (estimate = 0.50, 95% CI: 0.25 to 0.80) and anxiety symptoms (estimate = 0.32, 95% CI: 0.12 to 0.57) partially mediated the relationship between regular exercise and happiness, whereas depressive symptoms completely mediated the relationship between anxiety symptoms and happiness (estimate = -0.14, 95% CI: -0.20 to -0.08).</p><p><strong>Conclusion: </strong>The findings of this study highlight the intricate interplay of mental health issues, lifestyle factors and adolescent happiness and emphasise the need for comprehensive interventions focusing on enhancing physical activity and addressing psychological health to foster happiness among adolescents.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 2","pages":"e74"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052581/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clozapine-induced gastrointestinal hypomotility: UK pharmacovigilance reports, 2018-2022.","authors":"Robert James Flanagan, Simon Alfred Handley, Charlotte James, Lilly Wells, Susanna Every-Palmer","doi":"10.1192/bjo.2025.29","DOIUrl":"10.1192/bjo.2025.29","url":null,"abstract":"<p><strong>Background: </strong>Clozapine-induced gastrointestinal hypomotility (CIGH) can cause constipation, which may progress to ileus, intestinal perforation and other life-threatening conditions. There were at least 527 unique cases of harmful CIGH (172 deaths) assessed by strict criteria in the UK, 1992-2017.</p><p><strong>Aims: </strong>To assess the impact of strengthened warnings about the risks of CIGH, such as those issued by the UK Medicines and Healthcare products Regulatory Agency (MHRA) (2017) and the US Food and Drug Administration (2020), on reports of harmful CIGH in the UK.</p><p><strong>Method: </strong>We audited UK MHRA Yellow Card reports recorded as clozapine-related gastrointestinal disorders, 2018-end 2022.</p><p><strong>Results: </strong>Of 335 unique reports (36 fatal, 26 male) that met initial CIGH criteria, there were 129 (22 fatal, 18 male) that met the final CIGH inclusion criteria. Reports of non-fatal CIGH (final criteria) averaged 26 per year (15 in 2022). Deaths averaged four per year (two in 2022). Where data were available the greatest proportion of deaths occurred after 10-14 years of clozapine treatment.</p><p><strong>Conclusions: </strong>Publicity aimed at raising awareness of the problem posed by CIGH has been associated with a reduction in harmful CIGH as reported to the UK MHRA since 2017. Continued vigilance is needed to reduce risk. Stopping smoking may pose a particular risk and should be monitored carefully.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 3","pages":"e79"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052584/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association between plasma glucuronic acid levels and clinical features in schizophrenia.","authors":"Kazuya Toriumi, Mitsuhiro Miyashita, Syudo Yamasaki, Kazuhiro Suzuki, Koichi Tabata, Satoshi Yamaguchi, Satoshi Usami, Masanari Itokawa, Atsushi Nishida, Hidenori Kamiguchi, Makoto Arai","doi":"10.1192/bjo.2025.20","DOIUrl":"10.1192/bjo.2025.20","url":null,"abstract":"<p><strong>Background: </strong>Glucuronic acid (GlcA) is crucial in the glucuronidation pathway, facilitating the metabolism and elimination of various substances and drugs. Recent studies have noted elevated GlcA levels in patients with schizophrenia (SCZ) compared with healthy individuals. However, it remains unclear whether this elevation contributes to SCZ pathophysiology or results from medication effects.</p><p><strong>Aims: </strong>This study investigated the relationship between peripheral GlcA levels and clinical characteristics in patients with SCZ and assess whether these associations persist independently of psychotropic medication effects to provide insight into the potential role of GlcA in the pathophysiology of SCZ.</p><p><strong>Methods: </strong>Plasma GlcA levels were analysed in 218 patients with SCZ, examining their association with clinical features. The correlation between GlcA levels and symptom severity, assessed using the Positive and Negative Syndrome Scale (PANSS), was analysed in 35 patients. In addition, multiple regression analysis was conducted to adjust for age and psychotropic medication effects.</p><p><strong>Results: </strong>Significant correlations were observed between GlcA levels and PANSS scores for negative symptoms, general psychopathology and total scores. After adjustment for age and psychotropic medications, significant correlations between GlcA levels and PANSS scores persisted for negative symptoms (adjusted β [95% CI], 13.926 [2.369, 25.483]) and general psychopathology (adjusted β [95% CI], 19.437 [3.884, 34.990]), while the total score was no longer significant (adjusted β [95% CI], 34.054 [-0.517, 68.626]).</p><p><strong>Conclusions: </strong>Elevated GlcA levels in patients with SCZ are associated with specific symptom severity irrespective of the medication dose, suggesting a potential role of GlcA in SCZ pathophysiology.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 3","pages":"e77"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Supporting unpaid carers during section 17 leave from mental health in-patient wards: carer and practitioner perspectives.","authors":"Laura Tucker, Nicola Moran, Ruth Naughton-Doe, Emma Wakeman, Mark Wilberforce, Martin Webber","doi":"10.1192/bjo.2025.16","DOIUrl":"10.1192/bjo.2025.16","url":null,"abstract":"<p><strong>Background: </strong>Care planning for recovery and to work towards hospital discharge is integral to good practice in mental health in-patient settings. Authorised leave from hospital, especially for those who are detained, can be used to check readiness for discharge and to maintain social connections that support a patient's recovery journey. Leave therefore often involves friends and family, or 'carers'. However, carer involvement in planning leave is limited, and carers struggle with feeling unsupported during the leave.</p><p><strong>Aims: </strong>This study aimed to explore carers' and mental health practitioners' subjective experiences of leave in the context of implementing a set of practice guidelines for involving carers in planning and undertaking leave from hospital.</p><p><strong>Method: </strong>Nine wards in six National Health Service trusts were recruited to implement the guidelines. Interviews were undertaken with carers (<i>n</i> = 6) and practitioners (<i>n</i> = 3) from these implementation wards and with carers (<i>n</i> = 7) from nine usual care wards. A further ten practitioners completed an anonymous online survey. Data were analysed thematically.</p><p><strong>Results: </strong>Carers' experiences on both implementation and usual care wards indicated variable levels of involvement, with carers positioned as partners in care, observers of care or outsiders to care. Practitioner perspectives highlighted practical, structural and conceptual challenges in working with carers, which precluded effective implementation of the guidelines.</p><p><strong>Conclusions: </strong>The guidelines reflected what both carers and practitioners described as good practice, but resource limitations, unclear responsibilities and perceptions of carer roles limited engagement. Implementing approaches to working with carers in in-patient settings requires resourcing and clear role definition within staff-carer relationships.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 2","pages":"e71"},"PeriodicalIF":3.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12001960/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143708477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Service delay in schizophrenia: case-control study of pathways to care among homeless and non-homeless patients.","authors":"Ida-Marie Mølstrøm, Rasmus Handest, Mads Gram Henriksen, Annick Urfer Parnas, Julie Nordgaard","doi":"10.1192/bjo.2025.19","DOIUrl":"10.1192/bjo.2025.19","url":null,"abstract":"<p><strong>Background: </strong>Early detection of psychosis is paramount for reducing the duration of untreated psychosis (DUP). One key factor contributing to extended DUP is service delay - the time from initial contact with psychiatric services to diagnosis. Reducing service delay depends on prompt identification of psychosis. Patients with schizophrenia and severe social impairment have been found to have prolonged DUP. Whether service delay significantly contributes to prolonged DUP in this group is unclear.</p><p><strong>Aim: </strong>To examine and compare the course of illness for patients with schizophrenia who are homeless or domiciled, with a focus on service delay in detecting psychosis.</p><p><strong>Method: </strong>In this case-control study, we included out-patients with a schizophrenia spectrum diagnosis and who were homeless or domiciled but in need of an outreach team to secure continuous treatment. Interviews included psychosocial history and psychopathological and social functioning scales.</p><p><strong>Results: </strong>We included 85 patients with schizophrenia spectrum disorder. Mean service delay was significantly longer in the homeless group (5.5 years) compared with the domiciled group (2.5 years, <i>P</i> = 0.001), with a total sample mean of 3.9 years. Similarly, DUP was significantly longer in the homeless group, mean 15.5 years, versus 5.0 years in the domiciled group (<i>P</i> < 0.001). Furthermore, the homeless group had an earlier onset of illness than the domiciled group but were almost the same age at diagnosis.</p><p><strong>Conclusions: </strong>Our findings point to the concerning circumstance that individuals with considerable risk of developing severe schizophrenia experience a substantial delay in diagnosis and do not receive timely treatment.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 2","pages":"e65"},"PeriodicalIF":3.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12001915/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Multiuser Interactive Health Response Application (MITHRA) for depression in women from a community-based organisation in India.","authors":"Johnson-Pradeep Ruben, Dhinagaran Devadass, B Ramakrishna Goud, Yesenia Navarro-Aguirre, Bharat Kalidindi, Abijeet Waghmare, Tony Raj, Krishnamachari Srinivasan, Pamela Y Collins, Amritha Bhat","doi":"10.1192/bjo.2025.8","DOIUrl":"10.1192/bjo.2025.8","url":null,"abstract":"<p><strong>Background: </strong>In India, women in rural areas have high rates of depression. They have poor access to mental healthcare resources and, hence, mental health symptoms remain largely unaddressed. Existing mobile telephone applications (apps) do not engage end-users, lack local language options, may not be socioculturally relevant and do not use audiovisual formats. We thus developed a mobile mental health app, Multiuser Interactive Health Response Application (MITHRA), to screen and provide brief behavioural intervention for mild to moderate depression among rural women attending self-help groups (SHGs) in India.</p><p><strong>Aims: </strong>This qualitative study explores the process and findings of focus groups conducted with SHG administrators and women to inform the iterative development of the MITHRA app.</p><p><strong>Method: </strong>In total, 22 participants were interviewed (17 SHG participants and five administrators), and a thematic analysis of the data was conducted using the acceptability of interventions framework.</p><p><strong>Results: </strong>Frequent themes across the focus groups were affective attitude, burden, self-efficacy and perceived effectiveness. All women showed a positive attitude towards the app and depression interventions, while older women demonstrated less self-efficacy in using mobile mental health apps.</p><p><strong>Conclusions: </strong>MITHRA is a promising app in the management of mild to moderate depression in women in SHG. With adequate training and education of family members, MITHRA has the potential to identify and treat women with mild to moderate depression.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 2","pages":"e58"},"PeriodicalIF":3.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12001939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construct validity and reliability of the Dementia Test for People with Intellectual Disability: neuropsychological test battery for assessing cognitive functioning in people with intellectual disability.","authors":"Tanja Sappok, Miriam Flachsmeyer, Peggy Rösner, Björn Kruse, Sandra-Verena Müller, Daria Tarasova","doi":"10.1192/bjo.2024.847","DOIUrl":"10.1192/bjo.2024.847","url":null,"abstract":"<p><strong>Background: </strong>People with an intellectual disability are vulnerable to additional disorders such as dementia. Psychometrically sound and specific instruments are needed for assessment of cognitive functioning in cases of suspected dementia.</p><p><strong>Aims: </strong>To evaluate the construct and item validity, internal consistency and test-retest reliability of a new neuropsychological test battery, the Dementia Test for People with Intellectual Disability (DTIM).</p><p><strong>Method: </strong>The DTIM was applied to 107 individuals with intellectual disability with (<i>n</i> = 16) and without (<i>n</i> = 91) dementia. The psychometric properties of the DTIM were assessed in a prospective study. The assessors were blinded to the diagnostic assignment.</p><p><strong>Results: </strong>Confirmatory factor analysis at the scale level showed that a one-factor model fitted the data well (root mean square error of approximation < 0.06, standardised root mean square residual < 0.08, comparative fit index > 0.9). At the domain level, one-factor models showed reasonable-to-good fit index for five of seven domains. Internal consistency indicated excellent reliability of the overall scale (Cronbach's α: 0.94 for dementia and 0.95 for controls). Item analysis revealed a wide range of difficulties (0.19-0.75 for dementia, 0.31-0.87 for controls), with minimal floor and ceiling effects. Eleven items (26%) had discrimination value ≤ 0.50. Test-retest reliability (<i>n</i> = 82) was high, with intraclass correlations of 0.95 (total score) and 0.69-0.96 (domains).</p><p><strong>Conclusions: </strong>The DTIM fits a one-factor model and demonstrates internal and test-retest reliability; thus, it is suitable for use in cases of suspected dementia in people with various intellectual disabilities.</p>","PeriodicalId":9038,"journal":{"name":"BJPsych Open","volume":"11 2","pages":"e69"},"PeriodicalIF":3.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12001923/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143691016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}