Long-Term Trends and Sociodemographic Inequalities of Emotional/Behavioral Problems and Poor Help-Seeking in Adolescents During the COVID-19 Pandemic.

PURPOSE: During the first 3 years of the coronavirus disease (COVID-19) pandemic, we investigated the long-term trends of emotional/behavioral problems and poor help-seeking behavior in adolescents and examined the sociodemographic inequalities in these trends. METHODS: A multiwave cross-sectional survey was conducted in Japan from October-November 2020, June-July 2021, and June-July 2022 using an anonymous questionnaire. Trends of emotional/behavioral problems (e.g., emotional symptoms, hyperactivity/inattention, and total difficulties) and poor help-seeking were tested using a chi-squared test with Bonferroni correction. The effects of sociodemographic factors (grade, gender, country of origin, and number of parents) on emotional/behavioral problems and poor help-seeking were examined by two mixed-effect logistic regression models: (1) with fixed effects for years and sociodemographic factors and (2) stratified by years if the interaction terms between years and each sociodemographic factor were significant. RESULTS: The prevalence of total difficulties and emotional symptoms was the highest in 2021. The number of adolescents reporting hyperactivity/inattention and poor help-seeking increased between 2020 and 2021 and remained high in 2022. Inequalities in emotional/behavioral problems and poor help-seeking behavior were found with respect to all sociodemographic factors. DISCUSSION: Despite the persistent emotional/behavioral problems, the results suggested that the number of adolescents who were unable to seek help increased during the COVID-19 pandemic. Additionally, heterogeneities in the trends with respect to grade, gender, country of origin, and number of parents were detected. Prioritized supports targeting those with sociodemographic disadvantages may be needed to mitigate these inequalities in response to the pandemic.

Economic costs for outpatient treatment of eating disorders in Japan.

BACKGROUND: Few studies have examined the economic costs of outpatient care for eating disorders in Japan. This study aimed to clarify the reimbursement for outpatient treatment of eating disorders and compare the costs between the departments of Psychosomatic Medicine and Psychiatry in Japan. METHOD: A multicenter, prospective, observational study of patients with an eating disorder was conducted in the Psychosomatic Medicine departments of three centers and the Psychiatry departments of another three centers in Japan. We analyzed medical reimbursement for an outpatient revisit, time of clinical interviews, and the treatment outcome measured by the Eating Disorder Examination Questionnaire (EDE-Q) global scores and body mass index (BMI) at 3 months. Multivariate linear regression models were performed to adjust for covariates. RESULTS: This study included 188 patients in the Psychosomatic Medicine departments and 68 in the Psychiatry departments. The average reimbursement cost for an outpatient revisit was 4670 yen. Even after controlling for covariates, the Psychosomatic Medicine departments had lower reimbursement points per minute of interviews than the Psychiatry departments (coefficient = - 23.86; 95% confidence interval = - 32.09 to - 15.63; P < 0.001). In contrast, EDE-Q global scores and BMI at 3 months were not significantly different between these departments. CONCLUSIONS: This study clarifies the economic costs of treating outpatients with eating disorders in Japan. The medical reimbursement points per interview minute were lower in Psychosomatic Medicine departments than in Psychiatry departments, while there were no apparent differences in the treatment outcomes. Addressing this issue is necessary to provide an adequate healthcare system for patients with eating disorders in Japan.

This study examined the cost of outpatient care for eating disorders in Japan, comparing treatment costs between the Psychosomatic Medicine and Psychiatry departments. The actual cost of outpatient care for eating disorders in Japan was clarified. The results indicate that Psychosomatic Medicine departments have lower reimbursement points per interview time compared to the Psychiatry departments, but there were no noticeable differences in treatment outcomes between the two. This highlights the need to address this cost difference to improve the healthcare system for patients with eating disorders in Japan.

Retirement and cardiovascular disease: a longitudinal study in 35 countries.

BACKGROUND: Many countries have been increasing their state pension age (SPA); nonetheless, there is little consensus on whether retirement affects the risk of cardiovascular disease (CVD). This study examined the associations of retirement with CVD and risk factors. METHODS: We used harmonized longitudinal datasets from the Health and Retirement Study and its sister surveys in 35 countries. Data comprised 396 904 observations from 106 927 unique individuals aged 50-70 years, with a mean follow-up period of 6.7 years. Fixed-effects instrumental variable regressions were performed using the SPA as an instrument. RESULTS: We found a 2.2%-point decrease in the risk of heart disease [coefficient = -0.022 (95% confidence interval: -0.031 to -0.012)] and a 3.0%-point decrease in physical inactivity [-0.030 (-0.049 to -0.010)] among retirees, compared with workers. In both sexes, retirement was associated with a decreased heart disease risk, whereas decreased smoking was observed only among women. People with high educational levels showed associations between retirement and decreased risks of stroke, obesity and physical inactivity. People who retired from non-physical labour exhibited reduced risks of heart disease, obesity and physical inactivity, whereas those who retired from physical labour indicated an increased risk of obesity. CONCLUSIONS: Retirement was associated with a reduced risk of heart disease on average. Some associations of retirement with CVD and risk factors appeared heterogeneous by individual characteristics.

Mortality differences in disabled older adults by place of care in Japan: nationwide 10-year results.

This longitudinal study aimed to compare 1-year mortality between users of home- and community-based services (HCBS) and residential facilities (nursing homes, group homes, and geriatric apartments) among non-hospitalized frail older adults in Japan. Using three nationwide data sources, we conducted a nationwide pooled cohort study of 1-year follow-up among certified users of long-term care insurance (LTCI) aged 65 years and older from 2007 through 2016 to compare 1-year mortality using a logistic regression model. Overall, compared to HCBS users, mortality was higher in residents in nursing homes and geriatric apartments but lower in group home residents. While mortality gradually increased over time among those in residential facilities, it remained at a level similar to that of HCBS users. Since 2006, Japan's public health policy has been to increase end-of-life care in residential facilities. Our results indicate that this policy resulted in an increase in mortality in residential facilities, possibly due to accommodation of more severely ill people there, or a shift in their focus from transferring dying residents to hospitals to preserve the dignity of residents.

[Validation of using disqualification from long-term care insurance registry as a proxy of death].

Objectives　The national database for long-term care insurance (LTCI) of Japan (Kaigo DB) enables researchers to access comprehensive data from its LTCI registry, eligibility assessment records, claims for service usage, and information about service providers. However, studies regarding the death or mortality of beneficiaries cannot be conducted because Kaigo DB does not contain death records, and researchers are not allowed to link Kaigo DB to other databases, such as national death records. Therefore, we aimed to assess the validity of using an insurer's disqualification from an LTCI beneficiary as a proxy of death.Methods　We used 510,751,798 monthly beneficiary records between April 2007 and March 2017 from the LTCI registry, while excluding data for ineligible persons for LTCI benefit or those younger than 65 years. We identified insurer cases disqualified from LTCI beneficiaries and linked them to national death records using deterministic linkage methods by dates of birth and death, sex, and residence. We considered the cases as positive if they were disqualified and their record was linked to a death. We used sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) as validity indices.Results　We identified 5,986,991 (1.17%) disqualified and 5,295,961 death cases. Sensitivity, specificity, PPV, and NPV of disqualification for death were 100%, 99.86%, 88.46%, and 100%, respectively. After stratification, PPV of disqualification was between 85% and 88% before 2012, 91% after 2012, 91.9% in men, and 85.9% in women. PPV increased with age (65-69 years: 80.6%, 70-74 years: 86.7%, 75-79 years: 86.4%, 80-84 years: 86.7%, 85-89 years: 88.0%, 90-94 years: 90.6%, and 95+ years: 93.4%) and level of care needed (support level: 72.2%, care level (CL) 1: 79.7%, CL2: 85.9%, CL3: 89.3%, CL4: 92.3%, and CL5: 94.0%).Conclusions　Disqualification from the LTCI registry is an inappropriate measure to estimate mortality accurately because it has a 10% false-positive rate. However, it appears sufficiently valid to use disqualification as a proxy outcome of death, although the main effect or confounding of a possible predictor of death could be slightly underestimated.

National trends in the proportion of in-hospital deaths by cause of death among older adults with long-term care: a nationwide observational study in Japan from 2007 to 2017.

BACKGROUND: Japan has promoted end-of-life care at home and in long-term care facilities, and the total proportion of in-hospital deaths has decreased recently. However, the difference in trends of in-hospital deaths by the cause of death remains unclear. We investigated the variation in trends of in-hospital deaths among older adults with long-term care from 2007 to 2017, by cause of death and place of care. METHODS: Using the national long-term care insurance registry, long-term care claims data, and national death records, we identified people aged 65 years or older who died between 2007 and 2017 and used long-term care services in the month before death. Using a joinpoint regression model, we evaluated time trends of the proportion of in-hospital deaths by cause of death (cancer, heart diseases, cerebrovascular diseases, pneumonia, and senility) and place of care (home, long-term care health facility, or long-term care welfare facility). RESULTS: Of the 3,261,839 participants, the mean age was 87.0 ± 8.0 years, and 59.2% were female. Overall, the proportion of in-hospital deaths decreased from 66.2% in 2007 to 55.3% in 2017. By cause of death, the proportion of in-hospital deaths remained the highest for pneumonia (81.6% in 2007 and 77.2% in 2017) and lowest for senility (25.5% in 2007 and 20.0% in 2017) in all types of places of care. The joinpoint regression analysis showed the steepest decline among those who died of senility, especially among long-term care health facility residents. CONCLUSIONS: The findings of this nationwide study suggest that there was a decreasing trend of in-hospital deaths among older adults, although the speed of decline and absolute values varied widely depending on the cause of death and place of care.

Do macroeconomic shocks in the local labor market lead to child maltreatment and death?: Empirical evidence from Japan.

BACKGROUND: Japan is facing a rapid increase in the number of reported child maltreatment cases. Child maltreatment has long-term consequences for the victims, and unemployment rate is considered a strong predictor of it. However, only few studies have analyzed the causal relation between child maltreatment and the unemployment rate-particularly the effects of the latter on the former-in Japan. METHODS: Using prefecture-level longitudinal data from 2005 to 2016, we employed a fixed effects instrumental variable estimation. The estimation included a weighted average of the national unemployment rate across industries by industrial structures in 2005 as an instrument to identify the causal effects. RESULTS: The average local unemployment rate changed by approximately 50% from the peak to the bottom in the sample period. A 50% increase in local unemployment rates increased the number of reported child neglect cases and child deaths by 80% and 70% (statistically significant at the 5% level), respectively. Further, it increased cases of death due to external causes, unintentional injuries, and unintentional drowning by 146%, 217%, and 315% (statistically significant at the 5% level), respectively. CONCLUSION: The local unemployment rate is a risk factor for child maltreatment, resulting in children's death, especially as a result of unintentional drowning-the common cause of death due to child neglect. When the local unemployment rates rise, governments should allocate more financial and human resources for preventive measures to combat child deaths caused by neglect.

The effect of coverage of smoking-cessation aids on tobacco use: Evidence from Canada.

In clinical trials, smoking-cessation aids (SCAs) have proven to be effective at improving the odds of smoking cessation. Because of the effectiveness of SCAs in these settings, many countries have adopted the coverage of SCAs to reduce tobacco use. However, the effect of such coverage on tobacco use is ambiguous. On one hand, the coverage may have the intended effect and reduce tobacco use. On the other hand, the coverage may cause beneficiaries to participate in tobacco use more as the drug coverage protects beneficiaries from future costs associated with tobacco use. To understand the effect of SCA coverage, we examine it using 2008-2012 Canadian Tobacco Use Monitoring Survey and a difference-in-differences approach. We find that SCA coverage increases cigarette and cigarillo use. Moreover, the effect of SCA coverage on tobacco use is stronger in men and in those with at least a college education. Our results point to the unintended consequences of the coverage of SCAs on tobacco use.

Impacts of anticancer drug parity laws on mortality rates.

This study investigates the impacts of anticancer drug parity laws on mortality rates in the United States using a difference-in-differences approach. Using data from 2004 to 2017 Compressed Mortality Files, we show that the anticancer drug parity laws reduce the mortality rate for head/neck malignant cancers but have no impact on malignant cancers of other types. We also rule out an insurance expansion channel that may influence the relationship between anticancer drug parity laws and malignant cancer mortality. Our results are robust to various specifications and falsification tests. Our findings imply that providing equal access to oral anticancer drugs is an effective tool for the prevention of premature mortality.

The best of both worlds? The economic effects of a hybrid fee-for-service and prospective payment reimbursement system.

Countries seeking to move away from a purely fee-for-service (FFS) system may consider a hybrid approach whereby only some procedures are paid by FFS while others are paid prospectively. Yet little evidence exists whether such a hybrid payment system contains overall costs without adverse influences on health outcomes. In 2003, Japan experienced a reform from FFS to a hybrid payment system in which only some inpatient procedures were paid prospectively. We exploit this reform to test how such a hybrid system affects overall costs and health outcomes. Briefly, we find that healthcare providers responded opportunistically to the reform, moving some procedures out of the bundled inpatient setting to FFS services, leading to no reduction in cost. There was some evidence of a moderate deterioration in health outcomes, in terms of a decline in the probability of symptoms being cured at discharge. In sum, our results suggest that in some cases, a hybrid payment system can be non-superior to either FFS or prospective payment system.

Impact of a Japanese Incentivization Program to Increase End-of-Life Care Outside of Hospitals.

OBJECTIVES: To analyze the association of an incentivization program to promote death outside of hospitals with changes in place of death. DESIGN: A longitudinal observational study using national databases. SETTING AND PARTICIPANTS: Participants comprised Japanese decedents (≥65 years) who had used long-term care insurance services and died between April 2007 and March 2014. METHODS: Using a database of Japanese long-term care insurance service claims, subjects were divided into community-dwelling and residential aged care (RAC) facility groups. Based on national death records, change in place of death after the Japanese government initiated incentivization program was observed using logistic regression. RESULTS: Hospital deaths decreased by 8.7% over time, mainly due to an increase in RAC facility deaths. The incentivization program was more associated with decreased in-hospital deaths for older adults in RAC facilities than community-dwelling older adults. CONCLUSIONS AND IMPLICATIONS: In Japan, the proportion of in-hospital deaths of frail older adults decreased since the health services system introduced the incentivization program for end-of-life care outside of hospitals. The shift of place of death from hospitals to different locations was more prominent among residents of RAC facilities, where informal care from laymen was required less, than among community residents.

Concordance of hypertension, diabetes and dyslipidaemia in married couples: cross-sectional study using nationwide survey data in Japan.

OBJECTIVE: Because married couples have many environmental influences in common, spouses may develop similar diseases. This study aimed to determine the concordance of hypertension, diabetes and dyslipidaemia, which are major risk factors for cardiovascular disease, among married couples in Japan. RESEARCH DESIGN AND METHODS: We conducted a cross-sectional study of married couples who were both aged ≥40 years using the 2016 Comprehensive Survey of Living Conditions, which is a Japanese national survey. We first determined the proportions of wives and husbands who were receiving therapy for each of the diseases of interest. We then conducted logistic regression analyses using the wives undergoing therapy for each disease as outcomes and the husbands undergoing therapy for the same disease as the principal exposure, adjusting for covariates. RESULTS: The subjects of the analyses were 86 941 married couples. The wives of male patients were significantly more likely to be receiving therapy for the same disease. Logistic regression revealed that when husbands were undergoing therapy for these diseases their wives had ORs (95% CIs) of 1.79 (1.72-1.86) for hypertension, 1.45 (1.34-1.58) for diabetes, 2.58 (2.41-2.75) for dyslipidaemia and 1.87 (1.80-1.93) for any of these diseases. CONCLUSIONS: If men have hypertension, diabetes or dyslipidaemia, their wives were also more susceptible to the same disease. Medical professionals and couples may need to recognise these results and consider couple-based interventions to help the prevention, early detection and treatment of these diseases.

How efficient are surgical treatments in Japan? The case of a high-volume Japanese hospital.

Japan's healthcare expenditures, which are largely publicly funded, have been growing dramatically due to the rapid aging of the population as well as the innovation and diffusion of new medical technologies. Annual costs for surgical treatments are estimated to be approximately USD 20 billion. Using unique longitudinal clinical data at the individual surgeon level, this study aims to estimate the technical efficiency of surgical treatments across surgical specialties in a high-volume Japanese teaching hospital by employing stochastic frontier analysis (SFA) with production frontier models. We simultaneously examine the impacts of potential determinants that are likely to affect inefficiency in operating rooms. Our empirical results show a relatively high average technical efficiency of surgical production, with modest disparity across surgical specialties. We also demonstrate that an increase in the number of operations performed by a surgeon significantly reduces operating room inefficiency, whereas the revision of the fee-for-service schedule for surgical treatments does not have a significant impact on inefficiency. In addition, we find higher technical efficiency among surgeons who perform multiple daily surgeries than those who perform a single operation in a day. We suggest that it is important for hospital management to retain efficient surgeons and physicians and provide efficient healthcare services given the competitive Japanese healthcare market.

Individual and regional determinants of long-term care expenditure in Japan: evidence from national long-term care claims.

BACKGROUND: Japan, with the oldest population in the world, faces a financial challenge caused by rising long-term care (LTC) expenditure. For policymakers to address this, it is important that we have a better understanding of how individual and regional characteristics affect LTC expenditure. METHODS: We linked national LTC insurance (LTCI) claim data, covering the entire population who used LTCI services in Japan, with municipality data on an individual level. Individuals 65 years and older (n=3 876 068) who had used LTCI benefits at least once in the fiscal year (FY) 2016 were included. We examined the associations of individual and municipality characteristics regarding supply and demand of healthcare with the LTC expenditures on facility care, home and community care, and total care (the sum of both types of care), after adjusting for regional differences in LTC extra charges. RESULTS: The following variables were associated with higher total expenditure; at the individual level: female, a higher care-need level, a lower income (0% co-payments) or a facility service user; at the municipality level: municipalities locating in metropolitan areas, with a higher proportion of single elderly households, more doctors per 1000 citizens, more nursing homes per 100 000 LTC benefit users or more outpatient medical spending per citizen ≥75 years old. CONCLUSIONS: As we are able to identify several individual and municipality characteristics associated with higher LTC expenditure in Japan, the study offers insights into dealing with the rapidly growing LTC expenditure.

Effect of reduced formal care availability on formal/informal care patterns and caregiver health: a quasi-experimental study using the Japanese long-term care insurance reform.

BACKGROUND: It is unclear how formal long-term care (LTC) availability affects formal /informal caregiving patterns and caregiver health. We tested the impact of reduced formal LTC availability on formal LTC service use, intensity of informal caregiving, and caregiver health. METHODS: Using a representative, repeated cross-sectional sample of Japanese caregivers providing care to co-resident family members from 2001 to 2016, we applied a difference-in-differences approach by observing caregivers before and after the major reform of the public Japanese LTC insurance (LTCI) in 2006. The reform reduced coverage benefits for non-institutionalized older persons with low care needs, but not for those with high care needs. We analyzed 12,764 caregivers aged ≥30 years (mean age 64.3 ± 11.8 years, 73.5% women) and measured indicators of formal LTC use, hours of informal caregiving, and caregiver self-reported health outcomes after propensity score matching to balance caregivers' background characteristics. RESULTS: We found the 2006 LTCI reform relatively reduced the use of formal LTC services and relatively increased the percentage of experiencing long hours of informal caregiving (> 3 h per day) among the caregivers for seniors with low care needs compared to those for seniors with high care needs. The effects of the LTCI reform for the caregivers for seniors with low care needs were 2.2 percentage point higher on caregivers' experiencing poor self-rated health (95% confidence interval [CI]: 0.7-3.7; p = 0.01), 2.7 percentage point higher on experiencing symptoms of a depressive state (95%CI: 0.5-4.8; p = 0.03), and 4.7 percentage point higher on experiencing symptoms of musculoskeletal diseases (95%CI, 3.6-5.7; p < 0.001), compared to those for seniors with high care needs. CONCLUSIONS: Reduced formal care availability under the Japanese LTCI reform increased hours of informal caregiving corresponding to reduced use of formal LTC and deteriorated multiple dimensions of caregiver health. Our findings may highlight the importance of enhancing the availability of formal LTC services for caregiver health.

The association between activities of daily living and long hours of care provided by informal caregivers using a nationally representative survey in Japan.

•We determined the relationship between long hours of care and the assistance in each activity of daily living (ADL) element.•The assistance in wiping of the body, dressing and toileting were significantly associated with longer hours of care .•To support caregivers effectively, it is important to consider the kinds of ADL elements of the care recipients.

Differences in cancer patients' work-cessation risk, based on gender and type of job: Examination of middle-aged and older adults in super-aged Japan.

OBJECTIVES: In this paper, we aim to estimate the effect cancer diagnosis has on labour-force participation among middle-aged and older populations in Japan. We investigate the impact of cancer diagnosis on job cessation and the gap between gender or job types. METHODS: We sourced data from a nationwide, annual survey targeted population aged 51-70 featuring the same cohort throughout, and examined respondents' cancer diagnoses and whether they continued to work, while also considering differences between gender (observations: 53 373 for men and 44 027 for women) and occupation type (observations: 64 501 for cognitive worker and 20 921 for manual worker) in this regard. We also examined one-year lag effects, using propensity score matching to control for confounding characteristics. We also implement Logistic regression and derive the odds ratio to evaluate the relative risk of cancer diagnosis, which supplements the main result by propensity score matching. RESULTS: Overall, the diagnosis of cancer has a huge effect on labour-force participation among the population, but this effect varies across subpopulations. Male workers are more likely to quit their job in the year they are diagnosed with cancer (10.1 percentage points), and also in the following year (5.0 percentage points). Contrastingly, female workers are more likely to quit their job immediately after being diagnosed with cancer (18.6 percentage points); however, this effect totally disappears when considering likelihoods for the following year. Cognitive workers are more prone to quit their job in the year of diagnosis by 11.6 percentage points, and this effect remains significant, 3.8 percentage points, in the following year. On the other hand, for manual workers the effect during the year of diagnosis is huge. It amounts to 18.7 percentage points; however, the effect almost disappears in the following year. CONCLUSION: Our results indicate the huge effect of cancer on job cessation, and that there might be a degree of discrimination in workplaces between gender and job types.

Exercise or sports in midlife and healthy life expectancy: an ecological study in all prefectures in Japan.

BACKGROUND: With the increase of overall life expectancy in Japan, effective and beneficial lifestyle approaches and practices are crucial for individuals to have a long, productive and healthy life. Although previous studies suggest that exercise or sports, especially when performed with others, from midlife level have a positive impact on enhancing healthy life expectancy, there is paucity of information regarding these contexts and possible associations. The present study intends to clarify the relationship between engagement in exercise or sports among middle-aged persons and healthy life expectancy through an ecological study in all prefectures in Japan. METHODS: We tabulated (1) the ratios of middle-aged individuals engaged in exercise or sports and (2) the different methods by which they are engaged in exercise or sports for each prefecture by using data from the 2005-2010 Longitudinal Survey of Middle-aged and Elderly Persons by the Ministry of Health, Labour and Welfare of Japan. Weighted multiple linear regression analyses were performed by sex, using healthy life expectancy in 2010 of each prefecture calculated by Hashimoto (2013) as a criterion variable; indices of (1) and (2) of each year as explanatory variables; and age, living conditions, employment, and chronic diseases as adjusted variables. RESULTS: For middle-aged males, the ratio of those engaged in exercise or sports in each year from 2005 to 2010 was positively correlated with healthy life expectancy; this relationship was found in the ratio of middle-aged engaging in exercise or sports "with families or friends". For females, such a relationship could only be found in the ratio of middle-aged females engaged in exercise or sports in 2008 and 2010, and those engaging in exercise or sports "with families or friends" in 2008. CONCLUSION: Prefectures with a higher ratio of middle-aged individuals engaging in exercise or sports, especially when done with families or friends, have longer healthy life expectancies. This was particularly evident for males. Thus, exercise or sports with families or friends in midlife seems to be more effective in promoting healthy life expectancy for males than females in Japan.

Receiving the home care service offered by certified care workers prior to a patients' death and the probability of a home death: observational research using an instrumental variable method from Japan.

OBJECTIVES: To assess the association between receiving the certified care workers' home care service, which is provided by non-medical professionals prior to a patients' death and the probability of a home death. DESIGN: Observational research using the full-time translated number of certified care workers providing home care service per member of the population aged 65 or above, during the year prior to patient's death per municipality as an instrumental variable. SETTING: The certified care workers' home care service covered by the public long-term care insurance (LTCI) system in Japan. PARTICIPANTS: In total, 1 613 391 LTCI beneficiaries aged 65 or above who passed away, except by an external cause of death, between January 2010 and December 2013 were included in the analysis. PRIMARY OUTCOME MEASURES: Death at home or death at other places, including hospitals, nursing homes and clinics with beds. RESULTS: Out of all participants, 173 498 (10.8%) died at home. The number of patients who used the certified care workers' home care service more than once per each month during 1, 2 or 3 months prior to the month of death numbered 213 848, 176 686 and 155 716, respectively. This was associated with an increased probability of death at home by 9.1% points (95% CI 2.9 to 15.3), 10.5% points (3.3 to 17.6) and 11.4% points (3.6 to 19.2), respectively. CONCLUSIONS: The use of the certified care workers' home care service prior to death was associated with the increased probability of a home death.