Predicting the incidence of mild cognitive impairment with a computer-based cognitive assessment tool in community-dwelling older adults: The Otassha study.

This study examined the ability of a computer-based cognitive assessment tool (CompBased-CAT) to predict mild cognitive impairment (MCI) in community-dwelling older adults. A two-year longitudinal study was conducted using data from 2016 to 2018 from the Otassha study cohort of community-dwelling older adults. MCI was defined as a Mini-Mental Status Examination (MMSE) score of <27. The CompBased-CAT was used at baseline, with each subtest score converted into a Z-score. Subsequently, the total Z-scores were calculated. Participants were divided into robust and MCI groups, and all variables were compared using the t-test or χ2 test. Receiver operating characteristic (ROC) curves and logistic regression analyses were conducted, with MCI and total Z-scores as dependent and independent variables, respectively. Among the 455 participants (median age, 72 years; range, 65-89 years; 282 women and 173 men), 32 developed MCI after two years. The participants in the MCI group were significantly older. They had lower maximal gait speed, baseline MMSE scores, subtest Z-scores, and total Z-scores than those in the robust group. The area under the ROC curve was 0.79 (95% confidence interval: 0.70-0.87; P <0.01). The sensitivity was 0.76, and the specificity was 0.75. The logistic regression analysis showed an odds ratio of 1.34 (95% confidence interval: 1.18-1.52; P <0.01). This study showed that CompBased-CAT can detect MCI, which is an early stage of dementia. Thus, CompBased-CAT can be used in future community health checkups and events for older adults.

Evaluation of the usefulness of a paper-pencil group cognitive assessment for older adults in the community.

BACKGROUND: As the older population increases, the need for early detection of cognitive decline is also increasing. In this study, we examined whether our paper-pencil type group examination for cognitive assessment (PAPLICA) could detect the effects of years of education and aging. METHODS: PAPLICA was conducted on 829 older people. The inclusion criteria were age 60 years or older and the ability to come to the event site alone. The exclusion criteria were participants with a medical or psychiatric disorder or dementia.One examiner conducted the test on a group of approximately 10-20 people in approximately 25 min. Participants were instructed on tackling the issues projected on the projector, and their answers were recorded in a response booklet. RESULTS: An independent sample t-test was performed for years of education, and ANCOVA was performed for aging. Among the test items included in PAPLICA, the Speed I and Letter fluency tests were unable to detect the effects of aging. Furthermore, the age at which the effect of aging manifests varies depending on the test item. For instance, a decline in scores in the Speed I and Picture ECR Free recall tests was observed in the 70-74 age group; for that of Word DRT, Picture ECR cued recall, and Similarity, in the 75-79 age group; for CFT, in the 80-84 age group, and for CLOX, the decline was observed in the 85 ≤ age group. CONCLUSIONS: PAPLICA, similar to other neuropsychological tests, was able to detect the effects of years of education and aging. Future testing should be conducted on different demographics to identify the differences in patterns of cognitive decline.

Influence of education and subjective financial status on dietary habits among young, middle-aged, and older adults in Japan: a cross-sectional study.

BACKGROUND: Research has suggested an association between lower socioeconomic status (SES) and unhealthy dietary habits. However, differences in the effects of different SES indicators and age remain unclear. The current study addressed this research gap by investigating the relationship between SES and unhealthy dietary habits, specifically focusing on educational attainment and subjective financial status (SFS) among varied age groups. METHODS: Data were derived from a mail survey of 8,464 people living in a suburb of Tokyo, Japan. Participants were classified into three age groups (20-39 years: young adults; 40-64 years: middle-aged adults; and 65-97 years: older adults). SES was assessed based on individual educational attainment and SFS. Unhealthy dietary habits were defined as skipping breakfast and a low frequency of balanced meal consumption. Participants were asked how often they ate breakfast, and those who did not respond "every day" were categorized as "breakfast skippers." Low frequency of balanced meal consumption was defined as eating a meal that included a staple meal, main dish, and side dishes at least twice a day for less than five days per week. Poisson regression analyses with robust variance adjusted for potential covariates were used to determine the interactive effects of educational attainment and SFS on unhealthy dietary habits. RESULTS: Individuals with lower educational attainment across all age groups skipped breakfast more frequently compared to those with higher educational attainment. For older adults, poor SFS was associated with skipping breakfast. Young adults with poor SFS and middle-aged adults with lower educational attainment tended to eat less balanced meals. In addition, an interaction effect was found in older adults, where those with lower education despite good SFS and those with poor SFS despite higher education were at a greater risk of falling into unhealthy diet. CONCLUSIONS: The findings suggested that different SES indicators affect healthy dietary habits in different generations, and therefore, health policies should consider the potential influence of different SES on promoting healthier dietary habits.

Pet ownership-related differences in medical and long-term care costs among community-dwelling older Japanese.

This study examined the differences in medical and long-term care costs over 18 months between pet owners and non-owners among community-dwelling older Japanese. Pet ownership data were collected from 460 community-dwelling adults age 65 years and older. These data were matched with data from the National Health Insurance, health insurance for older people, and Long-Term Care Insurance beneficiaries for 17 months back from the survey on pet ownership. Pet-ownership group-specific trajectories in monthly medical and long-term care costs were modeled by a generalized estimating equation. Among pet owners (n = 96, 20.9%) and non-pet owners (n = 364, 79.1%) there were no significant differences in baseline demographic or health characteristics including chronic disease and self-reported long-term care level. At baseline, pet owners had estimated monthly medical costs of ¥48,054 (SE = 0.11; $418), compared to ¥42,260 (SE = 0.06; $367) for non-pet owners. The monthly medical costs did not differ significantly between the two groups during the 18-month follow-up period. At baseline, estimated monthly long-term care costs of pet owners and non-pet owners were ¥676 (SE = 0.75; $6) and ¥1,420 (SE = 0.52; $12), respectively. During the follow-up period, the non-pet owner to owner ratio of monthly long-term care costs was 1.2 at minimum and 2.3 at maximum. This study showed that monthly long-term care costs for pet owners were approximately half those of non-pet owners. Pet owners might use long-term care services less frequently, or use lighter care services.

Impact of number of functional teeth on independence of Japanese older adults.

AIM: To examine the relationship between the number of present and functional teeth at baseline and future incidence of loss of independence. METHODS: Participants were community-dwelling older individuals who participated in a comprehensive geriatric health examination conducted in Kusatsu town, Japan, between 2009 and 2015. The primary endpoint was the incidence of loss of independence among participants, defined as the first certification of long-term care insurance in Japan. The numbers of present and functional teeth at baseline were determined via an oral examination. Demographics, clinical variables (e.g., history of chronic diseases and psychosocial factors), blood nutritional markers, physical functions, and perceived masticatory function were assessed. RESULTS: This study included 1121 individuals, and 205 individuals suffered from loss of independence during the follow-up period. Kaplan-Meier estimates of loss of independence for participants with smaller numbers of present and functional teeth were significantly greater than for those with larger numbers of teeth. Cox proportional hazard analyses indicated that a smaller number of present teeth was not a significant risk factor after adjusting for demographic characteristics. However, the number of functional teeth was a significant risk factor after the adjustment (hazard ratio: 1.975 [1.168-3.340]). Additionally, higher hazard ratios were observed in other adjusted models, but they were not statistically significant. CONCLUSIONS: The number of functional teeth may be more closely related to the future incidence of loss of independence than the number of present teeth. This novel finding suggests that prosthodontic rehabilitation for tooth loss possibly prevents the future incidence of this life-event. Geriatr Gerontol Int 2022; 22: 1032-1039.

Determinants of new participation in sports groups among community-dwelling older adults: Analysis of a prospective cohort from The Otassha Study.

Participation in sports groups has health benefits for older adults, such as preventing functional limitations and social isolation. Encouraging participation in sports groups may be an important means of health promotion in older adults. However, there is insufficient research on the determinants of new participation in sports groups to consider effective interventions to promote participation in these groups. We investigated this using data from a 1-year prospective study. Data were obtained from "The Otassha Study" that assessed a cohort of community-dwelling older adults living in an urban area of Japan. Of 769 older adults who participated in a baseline health survey in 2018, 557 participated in a follow-up survey in 2019. We excluded 184 individuals who already participated in sports groups at baseline and 36 with missing data. Participation in sports groups was defined as that occurring more than once a week. Logistic regression analysis was used to identify the determinants of new participation in sports groups, with sociodemographic factors, lifestyle habits, physical functions, cognitive functions, psychological factors, and social factors as independent variables. Forty-one (12.2%) individuals participated in sports groups at follow-up. In the multiple adjusted logistic regression model, new participation in sports groups was significantly associated with female sex (odds ratio [OR] = 5.57, 95% confidence interval [CI]: 1.61‒19.26), engagement in regular exercise (OR = 2.23, 95%CI: 1.03‒4.84), and having a large social network (OR = 1.12, 95%CI: 1.04‒1.20). Physical functions were not associated with new participation. Determinants of new participation were lifestyle habits and social factors, rather than physical functions. Intervention through social networks may be effective in encouraging new participation in sports groups, which, in turn, may facilitate healthy aging.

Physical, social, and dietary behavioral changes during the COVID-19 crisis and their effects on functional capacity in older adults.

BACKGROUND: This two-year follow-up study aimed to identify factors associated with unhealthy behaviors during the COVID-19 pandemic and examine their impact on functional capacity in older adults. METHODS: Altogether, 536 adults aged ≥65 years participated in this study. The frequency of going out, exercise habits, face-to-face and non-face-to-face interactions, social participation, and eating habits were examined as behavioral factors before and after the first declaration of a state of emergency in Japan. Functional capacity was assessed using the Tokyo Metropolitan Institute of Gerontology Index of Competence. RESULTS: Using latent class analysis considering changes in the six behaviors, the participants were divided into healthy (n = 289) and unhealthy (n = 247) behavior groups. The male sex was associated with 2.36 times higher odds, diabetes with 2.19 times higher odds, depressive mood with 1.83 times higher odds, poor subjective economic status with 2.62 times higher odds, and living alone with 44% lower odds of being unhealthy. The unhealthy behavior group showed significantly decreased functional capacity (B =-1.56 [-1.98, -1.14]) than the healthy behavior group. For each behavior, negative changes in going out (B =-0.99 [-1.60, -0.37]), face-to-face interaction (B =-0.65 [-1.16, -0.13]), and non-face-to-face interactions (B =-0.80 [-1.36, -0.25]) were associated with a decline in functional capacity. CONCLUSION: Our results showed four factors associated with engaging in unhealthy lifestyle behaviors and how behavioral changes affect functional capacity decline during the COVID-19 pandemic, which will help to develop public health approaches.

[Development of a risk prediction model and a sample risk chart for long-term care certification based on the functional health of older adults].

Objectives　The first aim of this study was to develop risk prediction models based on age, sex, and functional health to estimate the absolute risk of the 3-year incidence of long-term care certification and to evaluate its performance. The second aim was to produce risk charts showing the probability of the incident long-term care certification as a tool for prompting older adults to engage in healthy behaviors.Methods　This study's data was obtained from older adults, aged ≥65 years, without any disability (i.e., they did not certify≥care level 1) and residing in Yabu, Hyogo Prefecture, Japan (n=5,964). A risk prediction model was developed using a logistic regression model that incorporated age and the Kihon Checklist (KCL) score or the Kaigo-Yobo Checklist (KYCL) score for each sex. The 3-year absolute risk of incidence of the long-term care certification (here defined as≥care level 1) was then calculated. We evaluated the model's discrimination and calibration abilities using the area under the receiver operating characteristic curves (AUC) and the Hosmer-Lemeshow goodness-of-fit test, respectively. For internal validity, the mean AUC was calculated using a 5-fold cross-validation method.Results　After excluding participants with missing KCL (n=4) or KYCL (n=1,516) data, we included 5,960 for the KCL analysis and 4,448 for the KYCL analysis. We identified incident long-term care certification for men and women during the follow-up period: 207 (8.2%) and 390 (11.3%) for KCL analysis and 128 (6.6%) and 256 (10.2%) for KYCL analysis, respectively. For calibration, the χ2 statistic for the risk prediction model using KCL and KYCL was: P=0.26 and P=0.44 in men and P=0.75 and P=0.20 in women, respectively. The AUC (mean AUC) in the KCL model was 0.86 (0.86) in men and 0.83 (0.83) in women. In the KYCL model, the AUC was 0.86 (0.85) in men and 0.85 (0.85) in women. The risk charts had six different colors, suggesting the predicted probability of incident long-term care certification.Conclusions　The risk prediction model demonstrated good discrimination, calibration, and internal validity. The risk charts proposed in our study are easy to use and may help older adults in recognizing their disability risk. These charts may also support health promotion activities by facilitating the assessment and modification of the daily behaviors of older adults in community settings. Further studies with larger sample size and external validity verification are needed to promote the widespread use of risk charts.

[Relationship between local seniors' longest-held occupation, current work situation, and reasons for working].

Objective　The purpose of this study was to clarify how the type and industry of longest-held occupations correlate with current work situations and reasons for working.Methods　In August 2015, we mailed anonymous, self-administered questionnaires to all 8,075 residents aged 65 and over of a district in Ota Ward, Tokyo, excluding those admitted to institutions. The questionnaire inquired about their basic attributes, current employment status, as well as the type of work and industry of their longest-held occupation. Furthermore, those who were currently employed were asked about their reasons for working. We conducted a multinomial logistic regression analysis with the current employment situation as the dependent variable, and a binary logistic regression analysis with the applicability of individual reasons as the dependent variable.Results　A total of 5,184 questionnaires were returned (response rate: 64.2%), and 5,050 were analyzed. For the longest-held form of work, the most common response was full-time and part-time employment (42.7%), and the most common industry was sales and service (24.2%). Roughly 30% of respondents were currently working, with the most common reason being "For a living," followed by "For my health," "To have a purpose in life (ikigai)," and "To contribute to society and build connections." The industry of the longest-held occupation for those currently working was most often self-employment; executive roles in independent businesses, companies, or organizations for those in full-time positions; and professional jobs for those working part-time. For those not currently working, most had been full-time employees or unemployed. With regard to the longest-held occupations, those currently working and who gave the reason "For a living" were most often owners of independent businesses or self-employed, while those stating "For my health," "To have a purpose in life," and "To contribute to society and build connections" had often been full-time employees, executives at a company or organization, or in administrative or technical positions.Conclusion　For seniors' employment or social participation to go smoothly, we believe a support that emphasizes individuality would be effective, including an emphasis on their longest-held occupation, which is deeply connected to their health conditions and quality of life in old age.

The impact of mutual aid on mental health and perceived isolation among the single elderly: An examination of economic status.

AIM: This study aimed to identify patterns in mutual aid relationships between older people living alone and their relatives and neighbors, and to examine the impact of mutual aid relationship patterns on mental health and perceived isolation through the mediating effect of subjective economic status. METHODS: We conducted a survey with 5000 randomly selected adults aged 65 years or older, from the five official senior care service areas of city A in Saitama Prefecture, Japan. Valid responses were received from 3941 participants (78.8%), of whom 436 participants from single-person households constituted the study sample. RESULTS: Latent class analysis revealed four types of mutual aid: family; family and intra-generational neighbors; no mutual aid; and family and multi-generational neighbors. Regression analysis showed that the interaction effect between family and neighbors' mutual aid and subjective economic status was a significant predictor of depressive symptoms. Simple slope analysis clarified that subjective economic status had a negative effect on depressive symptoms for the non-family/neighbors group, but not for the family/neighbors group. Furthermore, the interaction term between no mutual aid and subjective economic status was negatively associated with the fear of future isolation. Finally, the significantly negative effect observed was greater for the no mutual aid group than for the non-no mutual aid group. CONCLUSIONS: Mutual aid relationships are effective in improving the mental health and decreasing the fear of future isolation of older adults living alone who experience low economic status. Geriatr Gerontol Int 2021; 21: 555-560.

Influence of co-existing social isolation and homebound status on medical care utilization and expenditure among older adults in Japan.

OBJECTIVE: To examine whether co-existing social isolation and homebound status influence medical care utilization and expenditure in older adults. METHODS: Postal surveys on social isolation and homebound status were performed on older adults aged ≥65 years residing in a Japanese suburban city. Information on medical care utilization and expenditure was obtained from insurance claims data. These outcomes were examined over a three-year period (December 2008 to November 2011) for all participants (Analysis I, n = 1386) and during the last year of life for mortality cases (Analysis II, n = 107). A two-part model was used to analyze the influence of social isolation and homebound status on medical care utilization (first model: logistic regression model) and its related expenditure (second model: generalized linear model). RESULTS: Almost 12 % of participants were both socially isolated and homebound. Analysis I showed that these participants were significantly less likely to use outpatient and home medical care than participants with neither characteristic (odds ratio: 0.536, 95 % confidence interval: 0.303-0.948). However, Analysis II showed that participants with both characteristics had significantly higher daily outpatient and home medical expenditure in the year before death than participants with neither characteristic (risk ratio: 2.155, 95 % confidence interval: 1.338-3.470). DISCUSSION: Older adults who are both socially isolated and homebound are less likely to regularly utilize medical care, which may eventually lead to serious health problems that require more intensive treatment. Measures are needed to encourage the appropriate use of medical care in these individuals to effectively manage any existing conditions.

Workplace and community social capital and burnout among professionals of health and welfare services for the seniors: A multilevel analysis in Japan.

OBJECTIVE: Despite the potential of the social capital approach in preventing burnout, there is sparse evidence of its contextual effect. This study aimed to reveal the contextual association of workplace and community social capital on burnout among professionals of health and welfare services for seniors in Japan. METHODS: We collected data from a cross-sectional questionnaire survey for all health and welfare professionals working in Community Comprehensive Support Centers (CCSCs) in the central Tokyo area in 2015. We assessed burnout using the Japanese version of the Maslach Burnout Inventory, which consists of three subscales: emotional exhaustion, depersonalization, and reduced personal accomplishment. We prepared social capital items regarding workplace (the CCSC the participants belonged to) and community (the current catchment area of the CCSC). We aggregated individual responses of workplace and community social capital within each CCSC to create group-level workplace and community social capital indicators. RESULTS: Among the 1771 questionnaires distributed, we analyzed 1110 from 211 CCSCs. Multilevel analysis showed that higher group-level workplace social capital was significantly associated with lower scores of all three subscales after adjusting for covariates. Moreover, we found a significant association between greater group-level community social capital and lower scores of depersonalization and reduced personal accomplishment. CONCLUSION: Working in workplaces and communities with higher social capital is related to lower burnout. The findings suggest that strategies to enhance the social capital of their workplace and community would be beneficial in the prevention of burnout among professionals in the field of health and social welfare.

Associations of aging trajectories for an index of frailty score with mortality and medical and long-term care costs among older Japanese undergoing health checkups.

AIM: Using up to 13 years of repeated-measures data, we identified aging trajectories for an index in frailty score among older Japanese undergoing health checkups. In addition, we examined whether these trajectories were associated with all-cause and cause-specific mortality and healthcare costs. METHODS: In total, 1698 adults aged ≥65 years completed annual assessments during 2002-2014. During follow-up, the average number of follow-up assessments was 3.9, and the total number of observations was 6373. Frailty was defined by using the following criteria from Fried's phenotype: slowness, weakness, exhaustion, low physical activity and weight loss. RESULTS: We identified four aging trajectories for frailty. Specifically, 6.5%, 47.3%, 30.3% and 16.0% of participants were in the high, second, third and low trajectory groups, respectively. As compared with the low trajectory group, the high trajectory group had greater risks of cardiovascular disease (adjusted hazard ratios of 3.42) and other-cause death (adjusted hazard ratios of 3.04). The high trajectory group had the highest medical costs until late in the eighth decade of life, costs decreased after age 70 years and were lowest at age 90 years (estimated at $116.7); however, medical and long-term care costs greatly increased after age 80 years in the second and third trajectory groups. CONCLUSIONS: Higher aging trajectories in frailty score were associated with elevated risks for cardiovascular, other-cause and all-cause death among older Japanese receiving health checkups. Medical and care needs greatly increased for the second and third trajectory groups when their frailty level was progressed in later life. Geriatr Gerontol Int 2020; 20: 1072-1078..

[Current issues in access to care services for the elderly in Japan focusing on special permanent residents and foreign-born Japanese: A report by the Monitoring Report Committee of the Japanese Society of Public Health].

　Japan is currently one of the countries with a long life expectancy, in which a great number of older people need care for their daily living. Japan has become increasingly internationalized due to an increase in foreigners and international marriages. As the number of elderly foreigners and foreign-born Japanese increase, older adults who do not use Japanese as their first language will need more opportunities to receive care.　We examined characteristics such as country of origin, language spoken, lifestyle, living environment, and cultural background of elderly people who were either foreign permanent residents living in Japan or foreign-born Japanese (hereinafter referred to as elderly with an international background, in short, EIB) receiving care support. Ichushi-web, a medical literature database, was used [last search date: June 2, 2018]. These searches extracted 205 papers. After the first and second extraction procedures, only two papers matched this theme. These two reports were for Korean residents in Japan, so-called special permanent residents, and repatriates from China and their spouses, many of whom were aged 75 years old and above.　The number of permanent residents in Japan who speak a foreign language as their first language is increasing. Inhibition of communication between EIB and healthcare welfare service providers is expected to be an obstacle while accessing care support services. For this reason, we must provide them with information related to Japanese healthcare services. Medical interpretation efforts are scattered and the response to EIB in the event of disasters has been discussed. From the perspective of multicultural coexistence, it is necessary to provide long-term care insurance services and medical services to EIB. Such efforts may include development and sharing of tools and the placement of staff who can communicate with non-Japanese speakers. Staff must also understand various illness- and health awareness-related issues.　In the future, considering the increasing number of EIB who may require care services, we must consider cultural backgrounds and language diversification for EIB. These issues require clarification and development of acceptable solutions.

Factors associated with follow-up difficulty in longitudinal studies involving community-dwelling older adults.

This study aims to clarify the factors associated with the gradual withdrawal from society in older adults. We defined the stages of follow-up difficulty based on four follow-up surveys on non-respondents of longitudinal mail surveys in community-dwelling older adults to examine the main factors associated with the stages of follow-up difficulty. We conducted a follow-up mail survey (FL1) with respondents of a baseline survey, and three more follow-up surveys with the non-respondents of each previous survey: simplified mail (FL2), postcard (FL3), and home visit surveys (FL4). The respondents of each follow-up survey were defined as a stage of follow-up difficulty; their characteristics concerning social participation and interaction at baseline in each stage were analyzed. The number of respondents in the FL1, FL2, FL3, and FL4 stages and non-respondents (NR) were as follows: 2,361; 462; 234; 84; and 101, respectively. Participation in hobby groups in FL2 and FL3, sports groups in FL4, and neighborhood association and social isolation in NR were significantly associated with the stage of follow-up difficulty. Based on these results, we conclude that the following factors are associated with each stage of follow-up difficulty: 1) a decline in instrumental activities of daily living in the FL2 and FL3 stages, 2) dislike for participating in physical activity such as sports in the FL4 stage, and 3) social isolation, not even belonging to a neighborhood association due to low social interaction in the NR group.

Working for only financial reasons attenuates the health effects of working beyond retirement age: A 2-year longitudinal study.

AIM: The health benefits of paid employment in late life are understood, but they might vary according to work motives. We examined the health effects of employment among older adults, focusing on motivation. METHODS: We carried out a 2-year longitudinal survey from 2013 (baseline) to 2015 (follow up). Among 7608 older adults, the analysis included 1069 who completed both surveys and were employed at baseline. Work motives were assessed using a questionnaire. Participants were assigned to groups based on their responses: (i) financial reasons; (ii) motivation other than financial reasons; and (iii) both financial and non-financial reasons. Self-rated health, mental health and higher-level functional capacity were evaluated as health outcomes. RESULTS: There were group differences in baseline demographic variables and health status; those with financial reasons had lower socioeconomic status and worse mental health. Multivariable logistic regression analysis showed that compared with older workers with non-financial reasons, those with financial reasons were more likely to decline in self-rated health (OR 1.42; 95% CI 1.00-2.03) and higher-level functional capacity (OR 1.55; 95% CI 1.16-2.07), which was independent of potential covariates, including socioeconomic status. However, no differences were evident between those with only non-financial reasons and those having both financial and non-financial reasons. CONCLUSIONS: We found that the participants who worked only for financial rewards had reduced health benefits through working in old age. A prolonged working life among older workers can contribute to maintaining health and can be enhanced by non-financial reasons, such as finding meaning in life and social contact. Geriatr Gerontol Int 2020; 20: 745-751.

Development and validity of the Computer-Based Cognitive Assessment Tool for intervention in community-dwelling older individuals.

AIM: The Mini-Mental State Examination is a widely used cognitive assessment tool. However, it has several limitations, including the learning effect and interrater reliability. Therefore, we developed a Computer-Based Cognitive Assessment Tool (CompBased-CAT), which runs on a tablet or personal computer. In this study, we examined the validity and discrimination ability of the CompBased-CAT. METHODS: Participants were recruited from the Otasha-Kenshin study carried out in 2016. We included 773 community-dwelling older individuals in Japan (332 men, 441 women, aged 65-97 years). CompBased-CAT scores were converted to z-scores, and the correlation with Mini-Mental State Examination scores was examined using Pearson's correlation coefficient. Furthermore, the ability to discern cognitive impairment was examined using the receiver operating characteristic curve. RESULTS: The Pearson's correlation coefficient for the Mini-Mental State Examination scores and each task component of the CompBased-CAT ranged from 0.24 to 0.41 (P < 0.001), and the correlation coefficient of the total z-scores was 0.51 (P < 0.001). The sensitivity, specificity and area under the receiver operating characteristic curve of the discriminating ability of the CompBased-CATool for cognitive impairment were 0.81, 0.77 and 0.85, respectively. CONCLUSIONS: The CompBased-CAT certainly possesses validity, discriminating ability and utility as a new cognitive assessment tool in community-dwelling older individuals. Geriatr Gerontol Int 2020; ••: ••-••.