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Objectives: This study explored collaboration models between primary care physicians (PCPs) and care managers (CMs) and assessed each model's potential in meeting the support needs of individuals with early-stage dementia. Methods: In 2022, a cross-sectional survey was conducted among the PCPs in Tokyo. The data regarding the participant and clinic characteristics and daily practices for individuals with early-stage dementia were collected. The clinical collaborative practice was classified using a latent class analysis; comparisons were made between the identified classes based on 14 items in seven domains of support. Results: Two collaborative and one stand-alone models were identified. The former varied in the professionals' roles, with one led by PCPs and the other by CMs. We named them PCP-led, CM-led, and stand-alone models, accounting for 46.4%, 32.8%, and 20.6% of the clinics, respectively. The PCP-led clinics were significantly more likely to provide support than the stand-alone ones across five domains: cognitive function, care planning, carers' support, information, and social health. The CM-led model clinics generally fell between those of the other two models. Conclusion: Different leadership styles exist in the PCP-CM collaborations in care delivery for people with early-stage dementia. This collaboration offers distinct advantages for clinics in addressing their needs. [ABSTRACT FROM AUTHOR]

Objectives: Supporting people suffering from Diogenes Syndrome (DS) is a challenge for geriatric psychiatry. However, there is a lack of knowledge about DS in Japan. Therefore, a systematic longitudinal study to clarify the factors associated with DS and its prognosis was conducted. Methods/Design: A retrospective study using data from case records of a municipal psychogeriatric service was conducted. The study population was socially isolated older adults with complex mental health and social care needs who had been referred to the service over 10 years. The participants were stratified into DS and non‐DS groups, multivariate analysis was performed to identify factors associated with DS, and survival analysis was performed. Results: Of the 270 participants, 61 with Environmental Cleanliness and Clutter Scale (ECCS) scores >12 were assigned to the DS group, and 209 with ECCS scores ≤12 were assigned to the non‐DS group. On multiple logistic regression analysis, significantly more people in the DS group were living alone, had advanced dementia, and had reduced basic activities of daily living (BADL) compared to the non‐DS group. Furthermore, survival analysis showed that the DS group had a higher risk of early death than the non‐DS group. Conclusions: In the present study, social isolation, living alone, advanced dementia, and reduced BADL were found to be associated with DS. In addition, DS had a high risk of early death. Support for DS must take into account not only mental and social health, but also physical health from an early stage. Key points: This is the first systematic study of DS in JapanThe participants and their living environment were comprehensively assessed using standardized scales, and long‐term outcomes were followedPeople suffering from DS are socially isolated older adults living alone with advanced dementia, reduced BADL and a high risk of early deathPhysical health is an important consideration in supporting DS cases [ABSTRACT FROM AUTHOR]