Publications by authors named "Tami Saito"

Objectives: The indoor environment refers to the conditions within a building, including thermal comfort, air quality, lighting, and noise levels. However, the association between the indoor environment and the intention to enter nursing homes among older adults with functional limitations remains unclear. Therefore, this study examined the association of indoor environmental factors with intention to enter nursing homes within this population.

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Objective: The incidence rates of dementia, mild cognitive impairment, and cancer increase with age, posing challenges to affected individuals and their families. However, there are currently no clear cancer screening guidelines for individuals with cognitive impairment. This study analyzed the impact of carer health literacy on screening behaviors in this population.

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Arts and cultural engagement has the potential to reduce social deficits such as loneliness and social isolation. However, as most evidence is from Western countries, less is known whether the protective association of engagement with social deficits can also be seen in different cultural settings such as Asia. We explored the associations of arts and cultural engagement, focusing on engagement continuity and type, with loneliness and social isolation among older adults in Japan, one of the fastest-ageing countries.

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Importance: Socioeconomic status (SES) is associated with dementia. However, the role of SES transitions in dementia is less explored; such evidence would be useful to understand whether social mobility is associated with healthy longevity at older ages.

Objective: To investigate the association of lifetime SES transition with risk of dementia.

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Article Synopsis
  • Housing tenure significantly affects health outcomes, particularly mortality risk among older adults in Japan, with renters generally facing higher risks than homeowners.
  • A study analyzed data from 44,007 older Japanese residents over nine years, revealing that public renters had the lowest mortality risk compared to private renters, even after adjusting for various factors.
  • The findings suggest that well-planned urban development in public housing may contribute to reduced mortality risk among older renters, indicating the importance of neighborhood quality in health outcomes.
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Background: Behavioral and psychological symptoms of dementia (BPSD) are common among people with dementia from the early stages and can appear even in mild cognitive impairment (MCI). However, the prognostic impact of BPSD is unclear. This study examined the association between BPSD and mortality among people with cognitive impairment.

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Article Synopsis
  • The study aimed to analyze how type 2 diabetes and glycated hemoglobin (HbA1c) levels affect mortality in older adults with cognitive impairment.
  • Researchers examined 1,528 patients aged 65 and over, differentiating between those with and without type 2 diabetes, and categorized diabetic patients based on their HbA1c levels.
  • Findings showed that HbA1c levels above or below the recommended range increase mortality risk, while levels within the target range do not, supporting current diabetes management guidelines for older adults.
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Aim: To support informal caregivers, a simple assessment tool capturing the multidimensional nature of caregiving experiences, including negative and positive aspects, is required. We developed a short form of the Japanese version of the Caregiver Reaction Assessment (CRA-J), a multidimensional assessment scale for caregiver experiences.

Methods: The internet survey involved 934 Japanese informal caregivers aged 20-79 years (mean age = 58.

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Background: Non-pharmacological interventions effective for depressive mood and bilateral relationships among persons with cognitive impairment (PwCI) and their family caregivers (FCGs) have not been established.

Objective: To examine the feasibility of a newly developed group-based art appreciation and self-expression program (NCGG-ART) for dyads of PwCI and their FCGs.

Methods: This pilot randomized control trial included 34 dyads of PwCI diagnosed with mild to moderate Alzheimer's disease or mild cognitive impairment, and their FCGs, from an outpatient rehabilitation service (Holistic Physio-Cognitive Rehabilitation [HPCR]).

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Aim: The study aimed to investigate the association of vitality, as measured using the vitality index (Vix), with the survival outcomes of older adults with mild cognitive impairment (MCI) or dementia.

Methods: We analyzed data from 3731 patients in the National Center for Geriatrics and Gerontology - Life Stories of Individuals with Dementia cohort from July 2010 to September 2018. The main focus was to correlate Vix scores with the time from the initial visit to death.

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Background: The decision-making of older adults and people with dementia is attracting more attention among healthcare professionals. While cognitive impairment has been examined as a factor related to decision-making, it can also be assumed that involvement in decision-making leads to the maintenance of cognitive function. This study examined the association of the decision-making process with the onset of cognitive impairment.

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Background: Theories from anthropology, evolutionary psychology, and sociology have focused on the potential adaptive benefits of hobby engagement for mental health in older adults. However, previous studies have used data from single countries, potentially biased by specific measurement and methodological approaches, cohort effects, or cultural specificities. Whether there are genuine benefits for mental health in older adults cross-culturally remains unknown.

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Article Synopsis
  • A predictive model for all-cause mortality was developed to study risk factors among cognitively impaired individuals in a Japanese memory clinic cohort from 2010-2018.
  • The study included 2,610 patients aged 65 and older, with 544 (20.8%) deaths over an average follow-up of 4.1 years; nine key predictors of mortality were identified.
  • The model demonstrated strong accuracy for predicting 1-5 year mortality and can be effectively used for patients with mild cognitive impairment and various stages of dementia.
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Overcoming dementia stigma is a global challenge. Contact and education on dementia may be promising approaches for reducing public stigma; however, the current evidence is insufficient. This study examined the moderating factors associated with the public stigma against dementia, focusing on experiences of interacting with and learning about people with dementia.

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Growing aging populations pose a threat to global health because of the social and psychological challenges they experience. To mitigate this, many countries promote hobby engagement to support and improve mental health. Yet, it remains unclear whether there is consistency in benefits across different national settings.

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Background: Per the biopsychosocial model, pain, especially chronic low back pain, which often presents with nonspecific pain, requires a comprehensive approach involving social factors. However, the association of social factors, including social isolation and loneliness, with this condition remains unclear. This study examined the cross-sectional association of social isolation and loneliness with chronic low back pain among older adults.

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Article Synopsis
  • Loneliness and social isolation are prevalent issues among older adults in Japan, with this study seeking to uncover their associated factors and the characteristics of those experiencing them differently.
  • Analyzing data from over 13,000 adults aged 65 and older, the research found that factors like age, gender, socioeconomic status, and mental health significantly impacted experiences of social isolation and loneliness.
  • The findings suggest that addressing the needs of socioeconomically disadvantaged and unhealthy older adults is crucial in reducing loneliness and social isolation within this population.
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Background: Prognosis-related information regarding dementia needs to be updated, as changes in medical and long-term care environments for patients with dementia in recent decades may be improving the prognosis of the disease.

Objective: We aimed to investigate the mortality, cause of death, and prognostic factors by types of dementia in a Japanese clinic-based cohort.

Methods: The National Center for Geriatrics and Gerontology-Life Stories of People with Dementia consists of clinical records and prognostic data of patients who visited the Memory Clinic in Japan.

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Background: As an approach to the psychosocial health of people in later adulthood, information and communication technology (ICT) is attracting attention. However, because there is still a disparity issue in ICT use, particularly for older people, considering age-friendly digital interventions is important. We examined the feasibility of an intervention by an age-friendly digital service, remote sharing of photos/videos from families not living together, for psychosocial health in middle-aged and older people.

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Background: this study aimed to identify distinct subgroups of trajectories of disability over time before 3 years of death and examine the factors associated with trajectory group membership probabilities among community-dwelling Japanese older adults aged 65 years and above.

Methods: participants included 4,875 decedents from among community-dwelling Japanese older adults, aged ≥ 65 years at baseline (men: 3,020; women: 1,855). The certified long-term care levels of the national long-term care insurance (LTCI) system were used as an index of functional disability.

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Background: Recently, several studies reported that pneumonia might increase the risk of cognitive decline and dementia due to increased frailty.

Objectives: This study aims to examine the association between a history of pneumonia and subsequent dementia risk.

Methods: Participants were 9952 aged 65 years or older Japanese men and women from the Japan Gerontological Evaluation Study prospective cohort study, followed up from 2013 to 2019.

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Stroke is a major cause of disability in old age. Research has revealed that social resources available after the onset of stroke can mitigate functional prognosis. However, most studies have conceptualized resources as static rather than dynamic and have not measured changes in social resources from the pre-to post-stroke periods.

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Aim: Reducing stigma against dementia is a global challenge, but the assessment scale is not well established. We examined the validity and reliability of the Japanese version of the assessment scale of public stigma against dementia.

Methods: This study recruited 819 adults aged 20-69 years (mean age = 45.

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