The Effect of Home Care Support Clinics on Hospital Readmission in Heart Failure Patients in Japan.

BACKGROUND: Heart failure is common and is associated with high rates of hospitalization. Home care support clinics/hospitals (HCSCs) and enhanced HCSCs were introduced in Japan in 2006 and 2012, respectively. OBJECTIVE: This study aimed to examine the effect of post-discharge care by conventional or enhanced HCSCs on readmission, compared with general clinics. DESIGN: Retrospective cohort study using the Japanese nationwide health insurance claims database. PARTICIPANTS: Participants were ≥65 years of age, admitted for heart failure and discharged between July 2014 and August 2015 and received a home visit within a month following the discharge (n=12,393). MAIN MEASURES: The exposure was the type of medical facility that provides post-discharge home healthcare: general clinics, conventional HCSCs, and enhanced HCSCs. The primary outcome was all-cause readmission for 6 months after the first visit; the incidence of emergency house calls was a secondary outcome. We used a competing risk regression using the Fine and Gray method, in which death was regarded as a competing event. KEY RESULTS: At 6 months, readmissions were lower in conventional (38%) or enhanced HCSCs (38%) than general clinics (43%). The adjusted subdistribution hazard ratio (sHR) of readmission was 0.87 (95% CI: 0.78-0.96) for conventional and 0.86 (0.78-0.96) for enhanced HCSCs. Emergency house calls increased with conventional (sHR: 1.77, 95% CI:1.57-2.00) and enhanced HCSCs (sHR: 1.93, 95% CI: 1.71-2.17). CONCLUSIONS: Older Japanese patients with heart failure receiving post-discharge home healthcare by conventional or enhanced HCSCs had lower readmission rates, possibly due to compensation with more emergency house calls. Conventional and enhanced HCSCs may be effective in reducing the risk of rehospitalization. Further studies are necessary to confirm the medical functions performed by HCSCs.

Effects of Early Postdischarge Rehabilitation Services on Care Needs-Level Deterioration in Older Adults With Functional Impairment: A Propensity Score-Matched Study.

OBJECTIVE: To examine the effects of early postdischarge rehabilitation on care needs-level deterioration in older Japanese patients. DESIGN: Propensity score-matched retrospective cohort study. SETTING: A secondary data analysis was conducted using medical and long-term care insurance claims data from a suburban city in Japan. PARTICIPANTS: We analyzed patients (N=2746) aged 65 years or older who were discharged from hospital to home between April 2012 and March 2014 and had care needs certification indicating functional impairment. INTERVENTIONS: The provision of early rehabilitation services by rehabilitation therapists within 1 month of discharge. Propensity score matching was used to control for differences in characteristics between patients with and without early rehabilitation services. MAIN OUTCOME MEASURES: Any deterioration in care needs level during the 12-month period after discharge. Cox proportional hazards analyses were conducted to identify the association between the exposure and outcome variables after matching. RESULTS: Among 2746 patients, 573 (20.9%) used early rehabilitation services. Care needs-level deterioration occurred in 508 patients (incidence: 18.3 per 1000 person-months), of which 76 used early rehabilitation services (12.3 per 1000 person-months) and 432 did not use early rehabilitation services (20.0 per 1000 person-months). One-to-one propensity score matching produced 566 matched pairs that adjusted for the differences in all covariables. In these matched pairs, the hazard of care needs-level deterioration was significantly lower among patients who used early rehabilitation services (hazard ratio=0.712, 95% CI, 0.529-0.958). A Kaplan-Meier survival analysis showed similar results (log-rank: P=.023). CONCLUSIONS: Early rehabilitation services provided by rehabilitation therapists after hospital discharge appeared effective in preventing care needs-level deterioration, and involving rehabilitation therapists in transitional care may aid the optimization of health care for older Japanese adults with functional impairment.

Prevention services via public long-term care insurance can be effective among a specific group of older adults in Japan.

BACKGROUND: To evaluate the effects of prevention services provided by long-term care insurance (LTCI) for older adults who require support from LTCI in Kashiwa City, Japan. METHODS: We conducted an analysis using the following population-based longitudinal data in Kashiwa City between April 2012 and March 2015: Data of National Health Insurance and LTCI claims, the survey for certification of LTCI, the register, and premium tier classification. All data was linked using the pre-assigned anonymous identifying numbers. We analyzed the Cox regression model using the time for the deteriorations of levels of certified care need in LTCI as an outcome and the use of preventive care services as the primary exposure among participants aged 75 years or older, who had either support levels 1 or 2 at the beginning of this analysis. The study was further stratified by both age and initial support level. RESULTS: The final analysis included 1289 participants. The primary result showed, among all participants, that preventive service was not effective (hazard ratio 0.96, 95% confidence interval 0.78-1.19). In our sub-analysis, the preventive service was effective in avoiding deteriorations only among those aged 85 and older with support level 1 (HR 0.65, 95% CI 0.43-0.97) out of four groups. CONCLUSIONS: The preventive services of LTCI in Kashiwa City showed a significant effect on the deterioration among subjects aged 85 or older, whose disability level were low (support level 1). Our results suggest that the prevention services provided by LTCI may not be effective for all older individuals; to provide these services efficiently, local governments, as insurers of LTCI, will need to identify the specified groups that may benefit from the preventive services. Additionally, it is necessary to re-examine what preventive interventions may be effective, or redesign the health system if necessary, for those who were not affected by the intervention.

[The pulmonary rehabilitation utilization rate among older people with chronic obstructive pulmonary disease in Japan: A retrospective study using medical and long-term care insurance claims data].

AIM: This study aimed to improve the understanding of the utilization rates and the characteristics of users of pulmonary rehabilitation (PR) among people with chronic obstructive pulmonary disease. METHODS: We used medical and long-term care claims data from between April 2012 and March 2013 from Kashiwa city in Chiba prefecture, Japan. The study participants included patients of ≥63 years of age, who had received outpatient treatment for COPD (ICD-10 codes: J41-J44) two or more times during the study period, and who had been prescribed two or more COPD-related drugs. We extracted data on inpatient and outpatient PR using respiratory rehabilitation fee (I) (II) codes, and on home-based PR using home-care rehabilitation or nursing codes from medical insurance or long-term care insurance data. RESULTS: The mean age of the patients was 76.8 years (total participation: n = 2,708). There were 61 (2.3%) inpatient PR users, 25 (0.9%) outpatient PR users, and 101 (3.8%) home-based PR users. The median duration of usage by the inpatient, outpatient and home-based PR users was 1 month, 2 months, and 11 months, respectively. The mean age of non-PR and outpatient PR users was 76 years, while that of the inpatient PR users and home-based PR users was approximately 80 years. Approximately 20-30% of non-PR users and outpatient PR users were certified for long-term care. In contrast, approximately half of the inpatient users and almost all of the home-based PR users were certified for long-term care. CONCLUSIONS: Since the PR utilization rates were low in both hospital-based and home-based settings, it is necessary to take measures to disseminate each PR based on the characteristics of the intervention duration and service users.

Association of household income with home-based rehabilitation and home help service utilization among long-term home care service users.

BACKGROUND: To examine the association of household income with home-based rehabilitation and home help services in terms of service utilization and expenditures. METHODS: A secondary data analysis of cross-sectional design was conducted using long-term care (LTC) insurance claims data, medical claims data, and three types of administrative data. The subjects comprised LTC insurance beneficiaries in Kashiwa city, Japan, who used long-term home care services in the month following care needs certification. Household income was the independent variable of interest, and beneficiaries were categorized into low-income or middle/high-income groups based on their insurance premiums. Using a two-part model, the odds ratios (ORs) and 95% confidence intervals (CIs) for the utilization of home-based rehabilitation and home help services in the month following care needs certification were estimated using logistic regression analysis, and the risk ratios (RRs) of service expenditures were estimated using a generalized linear model for gamma-distributed data with a log-link function. RESULTS: Among 3770 subjects, 681 (18.1%) used home-based rehabilitation and 1163 (30.8%) used home help services. There were 1419 (37.6%) low-income subjects, who were significantly less likely to use (OR: 0.813; 95%CI: 0.670-0.987) and spend on (RR: 0.910; 95%CI: 0.829-0.999) home-based rehabilitation services than middle/high-income subjects. Conversely, low-income subjects were significantly more likely to use (OR: 1.432; 95%CI: 1.232-1.664) but less likely to spend on (RR: 0.888; 95%CI: 0.799-0.986) home help services than middle/high-income subjects. CONCLUSION: Household income was associated with the utilization of long-term home care services. To improve access to these services, the LTC insurance system should examine ways to decrease the financial burden of low-income beneficiaries and encourage service utilization.

Guideline-Based Medications for Older Adults Discharged after Percutaneous Coronary Intervention in a Suburban City of Japan: A Cohort Study Using Claims Data.

Secondary prevention with medications is essential for the better prognosis of patients who have experienced cardiovascular events. We aimed to evaluate the use of guideline-based medications for secondary prevention in older adults in the community settings after discharge following percutaneous coronary intervention (PCI). A retrospective cohort study was conducted using anonymized claims data of older beneficiaries in a suburban city of Japan between April 2012 and March 2015. The prescriptions of antiplatelets, statins, angiotensin-converting enzyme inhibitors (ACEi)/angiotensin II receptor blockers (ARB), and ß-blockers were evaluated for 3 months before and after the month in which the participants underwent PCI. Multivariable logistic regression analysis was conducted to evaluate the associations of age ("pre-old" group [63-72 years] vs. "old" group [≥ 73 years]) and sex with the prescriptions, adjusting for whether a participant was followed-up by the PCI-performing hospital. Of 815 participants, 59.6% constituted the old group and 70.9% were men. The prescription rates for antiplatelets, statins, ACEi/ARB, and ß-blockers after discharge were 94.6%, 65.0%, 59.3%, and 32.9%, respectively. The adjusted analysis indicated that statins were less likely to be prescribed for the old group (adjusted odds ratio [aOR], 0.70; 95% confidence interval [CI], 0.51-0.95; p = 0.023) and for men (aOR, 0.64; 95% CI, 0.45-0.89; p = 0.008). ß-blockers were more likely to be prescribed for men (aOR, 1.66; 95% CI, 1.17-2.33; p = 0.004). Our results suggest the potential for improvements in secondary prevention by increasing the prescription rates of guideline-based medications in this population.

Antipsychotic use and related factors among people with dementia aged 75 years or older in Japan: A comprehensive population-based estimation using medical and long-term care data.

OBJECTIVES: Antipsychotics are used to manage the behavioral and psychological symptoms of dementia (BPSD), despite their association with greater risks for mortality and cerebrovascular events. Previous studies in Japan have estimated the prevalence of antipsychotics among older adults who took antidementia drugs. Using long-term care (LTC) data, we aimed to obtain more accurate estimates of the prevalence of antipsychotics and to determine factors related to their use in older adults with dementia. METHODS: Medical and LTC claims data and LTC certification data between April 2012 and September 2013 were obtained from a middle-sized suburban city. The 1-year prevalence of antipsychotic use was estimated among individuals with probable dementia aged greater than or equal to 75 years who were prescribed antidementia drugs and/or had dementia based on LTC needs certification data. RESULTS: Of 25 919 participants, 4865 had probable dementia and 1506 were prescribed antidementia drugs. The prevalence of antipsychotics among participants with probable dementia was 10.7%, which was lower than that in those who were prescribed antidementia drugs (16.4%). Among participants with probable dementia with LTC certification data available (N = 4419), lower cognitive function (vs mild; adjusted odds ratio 2.16, 95% confidence interval 1.63-2.86), antidementia drug use (2.27, 1.84-2.81), and institutional LTC services use (2.34, 1.85-2.97) were associated with greater odds of antipsychotic use, whereas older age (greater than or equal to 92 years) was associated with lower odds (vs less than 77 years; 0.42, 0.27-0.65). CONCLUSIONS: These findings may be useful for estimating the burden of BPSD and for taking measures to reduce inappropriate antipsychotic prescription.

Household Income Relationship With Health Services Utilization and Healthcare Expenditures in People Aged 75 Years or Older in Japan: A Population-Based Study Using Medical and Long-term Care Insurance Claims Data.

BACKGROUND: This study aimed to determine whether there are disparities in healthcare services utilization according to household income among people aged 75 years or older in Japan. METHODS: We used data on medical and long-term care (LTC) insurance claims and on LTC insurance premiums and needs levels for people aged 75 years or older in a suburban city. Data on people receiving public welfare were not available. Participants were categorized according to household income level using LTC insurance premiums data. The associations of low income with physician visit frequency, length of hospital stay (LOS), and medical and LTC expenditures were evaluated and adjusted for 5-year age groups and LTC needs level. RESULTS: The study analyzed 12,852 men and 18,020 women, among which 13.3% and 41.5%, respectively, were categorized as low income. Participants with low income for both genders were more likely to be functionally dependent. In the adjusted analyses, lower income was associated with fewer physician visits (incidence rate ratio [IRR] 0.90; 95% confidence interval [CI], 0.87-0.92 for men and IRR 0.97; 95% CI, 0.95-0.99 for women), longer LOS (IRR 1.98; 95% CI, 1.54-2.56 and IRR 1.42; 95% CI, 1.20-1.67, respectively), and higher total expenditures (exp(ß) 1.09; 95% CI, 1.01-1.18 and exp(ß) 1.09; 95% CI, 1.05-1.14, respectively). CONCLUSIONS: This study suggests that older people with lower income had fewer consultations with physicians but an increased use of inpatient services. The income categorization used in this study may be an appropriate proxy of socioeconomic status.

The associations of multimorbidity with the sum of annual medical and long-term care expenditures in Japan.

BACKGROUND: The occurrence of multimorbidity (i.e., the coexistence of multiple chronic diseases) increases with age in older adults and is a growing concern worldwide. Multimorbidity has been reported to be a driving factor in the increase of medical expenditures in OECD countries. However, to the best of our knowledge, there is no published research that has examined the associations between multimorbidity and either long-term care (LTC) expenditure or the sum of medical and LTC expenditures worldwide. We, therefore, aimed to examine the associations of multimorbidity with the sum of medical and LTC expenditures for older adults in Japan. METHODS: Medical insurance claims data for adults ≥75 years were merged with LTC insurance claims data from Kashiwa city, a suburb in the Tokyo metropolitan area, for the period between April 2012 and September 2013 to obtain an estimate of medical and LTC expenditures. We also calculated the 2011 updated and reweighted version of the Charlson Comorbidity Index (CCI) scores. Then, we performed multiple generalized linear regressions to examine the associations of CCI scores (0, 1, 2, 3, 4, or ≥ 5) with the sum of annual medical and LTC expenditures, adjusting for age, sex, and household income level. RESULTS: The mean sum of annual medical and LTC expenditures was ¥1,086,000 (US$12,340; n = 30,042). Medical and LTC expenditures accounted for 66 and 34% of the sum, respectively. Every increase in one unit of the CCI scores was associated with a ¥257,000 (US$2920); 95% Confidence Interval: ¥242,000, 271,000 (US$2750, 3080) increase in the sum of the expenditures (p < 0.001; n = 29,915). CONCLUSIONS: Using a merged medical and LTC claims dataset, we found that greater CCI scores were associated with a higher sum of annual medical and LTC expenditures for older adults. To the best of our knowledge, this is the first study to examine the associations of multimorbidity with LTC expenditures or the sum of medical and LTC expenditures worldwide. Our study indicated that the economic burden on society caused by multimorbidity could be better evaluated by the sum of medical and LTC expenditures, rather than medical expenditures alone.

Cooperation between Single-Handed and Group Practices Ensures the Replacement of Gastrostomy Tubes and Tracheal Cannulas in Home Medical Care Settings.

In Japan, patients who require home medical care are increasing especially in the elderly. In home medical care settings, devices such as gastrostomy tubes, tracheal cannulas, and urethral catheters are usually replaced by visiting physicians or nurses. However, device replacement services are not always available in Japan. Unless device replacement services are sufficiently provided to patients at home, patients have to suffer various disadvantages, including a forced visit to a hospital for device replacement despite inability to walk. We therefore investigated background factors of clinics and nursing stations providing home-care visits using a cross-sectional postal survey from August to September 2013. We targeted physicians from 5,828 clinics providing home medical care and nurses from 1,798 home-visit nursing stations across six prefectures (Tokyo, Kanagawa, Saitama, Chiba, Miyagi and Iwate). Responses were received from 933 clinics (16.5%) and 552 stations (31.3%). We analyzed the responses using multivariable logistic regression with two models. "Model 1" mainly included the number of full-time staff and the availability of a 24-hour care service system, and "Model 2" mainly included the number of clinics, the number of home-visit nursing stations, and the ratio of the population aged ≥ 65 years to study the influence of medical resources. We thus found that clinic staff numbers and 24-hour care availability were associated with physicians' replacement of gastrostomy tubes and tracheal cannulas (p < 0.001 for each). In conclusion, single-handed and group practices need to cooperate to ensure the replacement of these devices in home medical care settings.

Development of an inter-professional educational program for home care professionals: Evaluation of short-term effects in suburban areas.

Objective　To examine the short-term effects of an inter-professional educational program developed for physicians and other home care specialists to promote home care in the community.Methods　From March 2012 to January 2013, an inter-professional educational program (IEP) was held four times in three suburban areas (Kashiwa city and Matsudo city in the Chiba prefecture, and Omori district in the Ota ward). This program aimed to motivate physicians to increase the number of home visits and to encourage home care professionals to work together in the same community areas by promoting inter-professional work (IPW). The participants were physicians, home-visit nurses, and other home care professionals recommended by community-level professional associations. The participants attended a 1.5-day multi-professional IEP. Pre- and post-program questionnaires were used to collect information on home care knowledge and practical skills (26 indexes, 1-4 scale), attitudes toward home care practice (4 indexes, 1-6 scale), and IPW (13 indexes, 1-4 scale). Data from all of the participants without labels about the type of professionals were excluded, and both pre-test and post-test responses were used in the analysis. A Wilcoxon signed-rank test and a paired t-test were conducted to compare pre- and post-program questionnaire responses stratified for physicians and other professionals, and the effect size was calculated.Results　The total number of participants for the four programs was 256, and data from 162 (63.3%) were analyzed. The physicians numbered 19 (11.7%), while other professionals numbered 143 (88.3%). Attending this program helped participants obtain home care knowledge of IPW and a practical view of home care. Furthermore, indexes about IPW consisted of two factors: cooperation and interaction; non-physician home care professionals increased their interactions with physicians, other professionals increased their cooperation with other professionals, and physicians increased their cooperation with other physicians.Conclusion　Short-term effects to motivate physicians to increase home visits were limited. However, physicians obtained a practical view of home care by attending the IEP. Also, the participation of physicians and other home care professionals in this program triggered the beginning of IPW in suburban areas. This program is feasible when adapted for regional differences.

Change in the Proportion of Death at Home during the COVID-19 Pandemic and Its Associated Factors in the Municipality Level: A Nationwide Study in Japan.

Introduction: The coronavirus disease 2019 (COVID-19) pandemic may have led to an increase in home deaths due to hospital bed shortage and hospital visitation restrictions. This study aimed to examine changes in the proportion of home deaths before and after the COVID-19 pandemic and identify associated factors. Methods: We used publicly available nationwide data to describe the proportion of home deaths among total deaths from 2015 to 2021. Furthermore, we used municipal-level data to examine the factors associated with the increase in the proportion of home deaths from 2019 to 2021. The dependent variable was the absolute change in the proportion of home deaths from 2019 to 2021. The independent variables included each municipality's 2019 home death percentage, medical and long-term care (LTC) resources divided by the population of older people, population density, and cumulative number of COVID-19 cases. A multivariable linear regression analysis was conducted after the standardization of each variable. Results: The proportions of home deaths in 2015, 2019, and 2021 were 12.7%, 13.6%, and 17.2%, respectively, indicating a sharp increase in home death rate after the COVID-19 pandemic. In the multivariable linear regression analysis that included 1,696 municipalities, conventional home care support clinics and hospitals (HCSCs) (coefficient [95% confidence intervals (CIs)], 0.19 [0.01-0.37]), enhanced HCSCs (0.53 [0.34-0.71]), home-visiting nurses (0.26 [0.06-0.46]), population density (0.44 [0.21-0.67]), and cumulative COVID-19 cases (0.49 [0.27-0.70]) were positively associated with the increase in home deaths, whereas beds of LTC welfare facilities (-0.55 [-0.74--0.37]) and the proportion of home deaths in 2019 (-1.24 [-1.44--1.05]) were negatively associated with the increase. Conclusions: During the COVID-19 pandemic, home deaths significantly increased, particularly in densely populated areas with high cumulative COVID-19 cases. HCSCs, especially enhanced HCSCs, are crucial for meeting the demand for home-based end-of-life care.

Association between types of home healthcare and emergency house calls, hospitalization, and end-of-life care in Japan.

BACKGROUND: To meet the increasing demand for home healthcare in Japan, as part of the national healthcare system, home care support clinics/hospitals (HCSCs) and enhanced HCSCs were introduced in 2006 and 2012 respectively. This study aimed to evaluate whether HCSCs has succeeded in providing 24-h home care services through the end of life. METHODS: A retrospective cohort study was conducted using the national database in Japan. Participants were ≥ 65 years of age, had newly started regular home visits between July 2014 and September 2015, and used general clinics, conventional HCSCs, or enhanced HCSCs. Each patient was followed up for 6 months after the first visit. The outcome measures were (i) emergency house call(s), (ii) hospitalization(s), and (iii) end-of-life care defined as in-home death. Multivariable logistic regression analyses were performed for statistical analysis. RESULTS: The analysis included 160,674 patients, including 13,477, 64,616, and 82,581 patients receiving regular home visits by general clinics, conventional HCSCs, and enhanced HCSCs respectively. Compared to general clinics, the use of conventional and enhanced HCSCs was associated with an increased likelihood of emergency house calls (adjusted odds ratio [aOR] and 95% confidence intervals [CIs] of 1.62 [1.56-1.69] and 1.86 [1.79-1.93], respectively) and a decreased likelihood of hospitalizations (aOR [95% CIs] of 0.86 [0.82-0.90] and 0.88 [0.84-0.92] respectively). Among 39,082 patients who died during the follow-up period, conventional and enhanced HCSCs had more in-home deaths (aOR [95% CIs] of 1.46 [1.33-1.59] and 1.60 [1.46-1.74], respectively) compared to general clinics. CONCLUSIONS: HCSCs (especially enhanced HCSCs) provided more emergency house calls, reduced hospitalization, and enabled expected deaths at home, suggesting that further promotion of HCSCs (especially enhanced HSCSs) would be advantageous.

[A new attempt to promote home medical care in Kashiwa city-usefulness of information and communication technology with seamless multidisciplinary cooperation].

Due to the rapidly increasing super-aging society, medical policy in Japan should be redefined. Therefore, the medical and nursing home care system should now be revised greatly. We need to change the current principle that is based on cure only. The patients should receive hospitable care closely connected with their life in their home-town(region)throughout their lifetime. This is termed as "home medical care system". Here, we promote patient-centered medical home care, which implements the chronic and/or End-Of-Life care models, in Kashiwa city, Chiba prefecture. This system is a promising framework for primary care transformation. There is a need for a multidisciplinary team-based care system using information and communication technology(ICT)with smooth and seamless cooperation. However, increased awareness among the workers engaged in home medical care is first required.

[Development of a home care educational program for community physicians and other professionals-a trial in Kashiwa City].

From May to October 2011, we conducted an 8-day homecare educational program for physicians, dentists, pharmacists, visiting nurses, long-term care managers, and hospital staff in Kashiwa city, Chiba, which was primarily intended to increase home visits by physicians. The characteristics of the program were as follows: 1) active and busy community physician participation, 2) attendance of practical training by physicians, 3) interprofessional discussion, 4) recruitment of participants from the same city, 5) recommendation of participant recruitment by a community-level professional association such as Kashiwa City Medical Association. By comparison of the pre- and post-program questionnaires completed by participants, the motivation for homecare practice, knowledge about homecare, and interactions with other professionals have increased. We will further standardize and generalize this program in order to contribute to homecare promotion in Japan.

Factors Affecting Care-Level Deterioration among Older Adults with Mild and Moderate Disabilities in Japan: Evidence from the Nationally Standardized Survey for Care-Needs Certification.

This study aims to investigate the factors of care-level deterioration in older adults with mild and moderate disabilities using nationally standardized survey data for care-needs certification. We enrolled people aged 68 years or older, certified as support levels 1-2 (mild disability) or care levels 1-2 (moderate disability) with no cancer. The outcome was care-level deterioration after two years. The possible factors were physical and mental functions which were categorized as the following five dimensions according to the survey for care-needs certification: body function, daily life function, instrumental activities of daily living (IADL) function, cognitive function, and behavioral problems. A multivariate logistic regression analysis was conducted after stratifying the care level at baseline. A total of 2844 participants were included in our analysis. A low IADL function was significantly associated with a risk of care-level deterioration in all participants. In addition, low cognitive function was linked to care-level deterioration, except for those with support level 1 at baseline. Participants with more behavioral problems were more likely to experience care-level deterioration, except for those with care level 2 at baseline. Our study showed the potential utility of the care-needs certification survey for screening high-risk individuals with care-level deterioration.

Development and validation of a risk score to predict the frequent emergency house calls among older people who receive regular home visits.

BACKGROUND: The demand for home healthcare is increasing in Japan, and a 24-hour on-call system could be a burden for primary care physicians. Identifying high-risk patients who need frequent emergency house calls could help physicians prepare and allocate medical resources. The aim of the present study was to develop a risk score to predict the frequent emergency house calls in patients who receive regular home visits. METHODS: We conducted a retrospective cohort study with linked medical and long-term care claims data from two Japanese cities. Participants were ≥ 65 years of age and had newly started regular home visits between July 2014 and March 2018 in Tsukuba city and between July 2012 and March 2017 in Kashiwa city. We followed up with patients a year after they began the regular home visits or until the month following the end of the regular home visits if this was completed within 1 year. We calculated the average number of emergency house calls per month by dividing the total number of emergency house calls by the number of months that each person received regular home visits (1-13 months). The primary outcome was the "frequent" emergency house calls, defined as its use once per month or more, on average, during the observation period. We used the least absolute shrinkage and selection operator (LASSO) logistic regression with 10-fold cross-validation to build the model from 19 candidate variables. The predictive performance was assessed with the area under the curve (AUC). RESULTS: Among 4888 eligible patients, frequent emergency house calls were observed in 13.0% of participants (634/4888). The risk score included three variables with the following point assignments: home oxygen therapy (3 points); long-term care need level 4-5 (1 point); cancer (4 points). While the AUC of a model that included all candidate variables was 0.734, the AUC of the 3-risk score model was 0.707, suggesting good discrimination. CONCLUSIONS: This easy-to-use risk score would be useful for assessing high-risk patients and would allow the burden on primary care physicians to be reduced through measures such as clustering high-risk patients in well-equipped medical facilities.

[Re-exploring attitude toward community scale and its relationship to health status among the general population].

OBJECTIVES: In order for community-based health promotion and prevention activities to be effective and efficient, it is important to assess the community consciousness among local residents. The purpose of this study was to review the reliability and validity of the Attitude toward Community Scale (ACS) and examine its association with health status among the general population. METHODS: A cross-sectional survey was conducted in February 2009 using a mail-in self-administered questionnaire. The target population comprised 4,123 randomly-selected local residents aged 20 years and over living in Kashiwa city, Chiba prefecture, Japan. The questionnaire encompassed the ACS (the wording of some items was modified), an also included data to allow assessment of demographics and health status. RESULTS: Of 4,123 questionnaires, 1,735 could be analyzed (valid response rate: 42.1%). Confirmatory factor analysis supported the two-factor model of the original scale. The reliability of the scale was verified using the Cronbach's alpha coefficient. All item-total correlations were moderately or strongly positive. Logistic regression showed that a better attitude toward the community was associated with higher self-rated health, less anxiety about the future and less loneliness. CONCLUSION: Although the original scale was developed in 1978, the ACS still appears applicable for modern research following some wording modifications of the items. In future studies, it will be necessary to clearly establish relationships between health status and community consciousness and to develop methodology for enhancing the latter.

[Home medical care center project for an aging society].

We have to create a new paradigm for home medical care system towards a historical increase of elderly population in Japan. Tokyo University and Chiba University have been collaborating to erect a home medical care support center in Kashiwa, Chiba prefecture. We have been constructing a support center as well as a home care doctor system, and also created a teaching course for GPs to learn a home care doctor activity. We have also been constructing a regional network system called IT Net in Chiba, which connects all the entire medical and care staff. We will expand this model in many places and to instruct medical students and residents there in the near future.

Associations of coprescribed medications for chronic comorbid conditions in very old adults with clinical dementia: a retrospective cohort study using insurance claims data.

OBJECTIVE: To assess the association of coprescribed medications for chronic comorbid conditions with clinical dementia in older adults, as indicated by the initiation of a new prescription of antidementia medication (NPADM). DESIGN: Retrospective enumeration cohort study. SETTING: A Japanese city in Tokyo Metropolitan Area. PARTICIPANTS: A total of 42 024 adults aged ≥77 years residing in Kashiwa City, a suburban city of Tokyo Metropolitan Area, who did not have any prscription of antidementia medication from 1 April to 30 June 2012. MAIN OUTCOME MEASURE: The primary outcome was NPADM during follow-up period until 31 March 2015 (35 months). Subjects were categorised into four age groups: group 1 (77-81 years), group 2 (82-86 years), group 3 (87-91 years) and group 4 (≥92 years). In addition to age and sex, 14 sets of medications prescribed during the initial background period (from 1 April 2012 and 31 June 2012) were used as covariates in a Cox proportional hazard model. RESULTS: In a follow-up period of 1 345 457 person-months (mean=32.0±7.5 months, median 35 months), NPADM occurred in 2365 subjects. NPADM incidence at 12 months was 1.9%±0.1% (group 1: 0.9%±0.1%, group 2: 2.1%±0.1%, group 3: 3.2%±0.2% and group 4: 3.6%±0.3%; p<0.0001). In addition to older age and female sex, use of the following medications was significantly associated with NPADM: statins (HR: 0.82, 95% CI 0.73 to 0.92; p=0.001), antihypertensives (HR: 0.80, 95% CI 0.71 to 0.85; p<0.0001), non-steroidal bronchodilators (HR: 0.72, 95% CI 0.58 to 0.88; p=0.002), antidepressants (HR: 1.79, 95% CI 1.47 to 2.18; p<0.0001), poststroke medications (HR: 1.45, 95% CI 1.16 to 1.82; p=0.002), insulin (HR: 1.34, 95% CI 1.01 to 1.78; p=0.046) and antineoplastics (HR: 1.12, 95% CI 1.01 to 1.24; p=0.035). CONCLUSIONS: This retrospective cohort study identified the associations of coprescribed medications for chronic comorbid conditions with NPADM in older adults. These findings would be helpful in understanding the current clinical practice for dementia in real-world setting and potentially contribute to healthcare policymaking. TRIAL REGISTRATION NUMBER: UMIN000039040.