Sex-specific association of comorbid heart failure on mortality after Alzheimer's disease diagnosis in older adults aged 75 years and above: A health insurance claims data analysis in Japan.

Background: Research on the influence of heart failure on mortality after Alzheimer's disease diagnosis is limited.

Objective: To evaluate the association between comorbid heart failure and mortality following Alzheimer's disease diagnosis, particularly considering sex differences.

Methods: We analyzed administrative claims data from Japan, involving 32,363 individuals (11,064 men and 21,299 women) aged 75 or older newly diagnosed with Alzheimer's disease, with 7% having comorbid heart failure.

[Analysis of hospitalization status by major classification according to ICD-10 among public assistance recipients considering sex and age].

Objectives　We evaluated the number of hospitalizations among public assistance recipients for each major classification according to the International Classification of Diseases 10th Revision (ICD-10), adjusting for sex and age differences in the general Japanese population. This study aimed to provide a comprehensive assessment of hospitalization patterns among public assistance recipients by disease category.Methods　We used indirect methods to adjust for sex and age, with public assistance recipients and the entire Japanese population as the observation and reference groups, respectively.

The Prevalence of Duplicate Prescription of Oral Antibiotic Drugs in Outpatient Care among People Insured by Corporate Health Insurance Societies in Japan.

Inappropriate antimicrobial use is a global problem, especially because the use of antimicrobials in excess of appropriate doses is associated with increased antimicrobial resistance. Duplicate prescriptions are an issue contributing to inappropriate antimicrobial use. This study aimed to analyse antibiotic prescriptions during a specific month to examine the frequency of outpatients receiving duplicate antibiotic prescriptions and the associated determinants.

Impact of diabetes on mortality and hospitalization after dementia diagnosis: Health insurance claims data analysis.

Aim: Japan faces a public health challenge of dementia, further complicated by the increasing complications from diabetes within its rapidly aging population. This study assesses the impact of diabetes on mortality and hospitalization among individuals aged ≥75 years with new dementia diagnoses.

Methods: We analyzed administrative claims data in Japan from 73 324 individuals aged ≥75 years with dementia, of whom 17% had comorbid diabetes.

Classifying Schizophrenia Cases by Artificial Neural Network Using Japanese Web-Based Survey Data: Case-Control Study.

Background: In Japan, challenges were reported in accurately estimating the prevalence of schizophrenia among the general population. Retrieving previous studies, we investigated that patients with schizophrenia were more likely to experience poor subjective well-being and various physical, psychiatric, and social comorbidities. These factors might have great potential for precisely classifying schizophrenia cases in order to estimate the prevalence.

Physical, Psychiatric, and Social Comorbidities of Individuals with Schizophrenia Living in the Community in Japan.

The physical, psychiatric, and social comorbidities interfere with the everyday activities of community-dwelling individuals with schizophrenia and increase the risk of their readmission. However, these comorbidities have not been investigated comprehensively in Japan. We conducted a self-reported internet survey in February 2022 to identify individuals aged 20-75 years with and without schizophrenia using a prevalence case-control study.

Recent findings on subjective well-being and physical, psychiatric, and social comorbidities in individuals with schizophrenia: A literature review.

Aim: Care for people with schizophrenia is shifting the locus from long-stay mental hospitals to nonspecialized community-based settings. Knowledge on the care is not a sole property of psychiatric specialists. Community healthcare workers who do not specialize in psychiatry are recommended to learn more about schizophrenia.

The Prevalence and Characteristics of Older Japanese Adults with Polypharmacy, Based on Regionally Representative Health Insurance Claims Data.

We aimed to clarify the prevalence of polypharmacy among elderly individuals in Japan. We used the data obtained from a large-scale population-based representative database of health insurance claims in a single prefecture in Japan. We examined all of the outpatient and pharmaceutical health insurance claims for National Health Insurance and those for Late-stage Elderly Health Insurance in Nagasaki Prefecture, Japan between April and June 2016.

Coding and prescription rates of osteoporosis are low among distal radius fracture patients in Japan.

Introduction: This study aimed to clarify the coding and prescription rates for osteoporosis in distal radius fracture patients and to investigate the associated factors to help prevent subsequent osteoporotic fracture.

Materials And Methods: Between 2014-2015, among 294,374 eligible individuals (42% female) aged 50-75 years in a health insurance claims database, we identified 192 individuals (mean age: 59.8 years, 74% female), counted the coding of distal radius fracture (International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10) code: S525, S526), and determined if the patient had been assigned the code for osteoporosis and been prescribed osteoporosis medications.

[Changes in the average interval since last visit and the number of repeat outpatients in the Patient Survey of Japan].

Objectives　The Patient Survey provides basic information on disease and injury statistics of patients in Japan, and an estimation of the number of patients by disease and injury can be made using this survey. In this survey, the number of outpatients with repeat visits affects the survey results. The average interval since last visit (AILV) and a correction factor are used to estimate the number of repeat outpatients.

The Number of Patients and Therapeutic Profile of Spinal Stenosis Using Health Insurance Claims in Japan.

Study Design: Population-based retrospective descriptive study.

Objective: To describe the number and therapeutic profile of patients with spinal stenosis at a large-scale community level using health insurance claims data.

Summary Of Background Data: A few reports have documented the prevalence of spinal stenosis, and no report has described the therapeutic profile for spinal stenosis in a population base.

Reasons for smoking cessation attempts among Japanese male smokers vary by nicotine dependence level: a cross-sectional study after the 2010 tobacco tax increase.

Objectives: To examine the association between smoking cessation attempts during the previous 12 months, motivators to quit smoking and nicotine dependence levels among current male smokers after Japan's massive 2010 tobacco tax increase.

Design: Cross-sectional study.

Setting: A self-reported questionnaire about smoking habits, nicotine dependence levels and factors identified as motivators to quit smoking was administered to 9378 employees working at a company located in Fukuoka Prefecture in Japan (as of 1 October 2011).

Assessment of text documentation accompanying uncoded diagnoses in computerized health insurance claims in Japan.

Background: Uncoded diagnoses in health insurance claims (HICs) may introduce bias into Japanese health statistics dependent on computerized HICs. This study's aim was to identify the causes and characteristics of uncoded diagnoses.

Methods: Uncoded diagnoses from computerized HICs (outpatient, inpatient, and the diagnosis procedure-combination per-diem payment system [DPC/PDPS]) submitted to the National Health Insurance Organization of Kumamoto Prefecture in May 2010 were analyzed.

Effectiveness and Sustainability of Education about Incident Reporting at a University Hospital in Japan.

Objectives: The aim of this study was to evaluate the effectiveness and sustainability of educational interventions to encourage incident reporting.

Methods: This was a quasi-experimental design. The study involved nurses working in two gastroenterology surgical wards at Fukuoka University Hospital, Japan.

The proportion of uncoded diagnoses in computerized health insurance claims in Japan in May 2010 according to ICD-10 disease categories.

Background: Uncoded diagnoses in computerized health insurance claims are excluded from statistical summaries of health-related risks and other factors. The effects of these uncoded diagnoses, coded according to ICD-10 disease categories, have not been investigated to date in Japan.

Methods: I obtained all computerized health insurance claims (outpatient medical care, inpatient medical care, and diagnosis procedure-combination per-diem payment system [DPC/PDPS] claims) submitted to the National Health Insurance Organization of Kumamoto Prefecture in May 2010.

Linezolid minimum inhibitory concentration (MIC) creep in methicillin-resistant Staphylococcus aureus (MRSA) clinical isolates at a single Japanese center.

The aim of this study was to evaluate whether linezolid minimum inhibitory concentration (MIC) creep occurred in Staphylococcus aureus clinical isolates, including methicillin-resistant S. aureus (MRSA), over a recent 5-year period at a single Japanese center. A total of 453 MRSA and 195 methicillin-susceptible S.

Assessment of medical expenditures for sepsis:differentiating between cases with and without ruled-out diagnoses.

Setting public health priorities requires precise estimation of the burden of disease, including disease-specific medical expenditure. Information on multiple and ruled-out diagnoses on health insurance claims (HICs) has been ignored in traditional analyses of disease-specific medical expenditures in Japan. This study reviewed 448 inpatients with at least one diagnosis of sepsis on their HICs, who were insured by corporate health insurance organizations making claims on services provided from April 2006 to March 2007 in Japan.

[Trends and antimicrobial susceptibilities of clinical methicillin-resistant Staphylococcus aureus isolates in Fukuoka University Chikushi Hospital 2008-2012].

The aim of this study was to investigate the trends and antimicrobial susceptibilities of methicillin-resistant Staphylococcus aureus (MRSA) clinical isolates from outpatients and inpatients from April 2008 to March 2013 at Fukuoka University Chikushi Hospital. The proportion of MRSA among the S. aureus isolates from outpatients was stable over the study period, however, that from inpatients gradually decreased (p=0.

Using health insurance claim information for evacuee medical support and reconstruction after the Great East Japan Earthquake.

Objective: Loss of patient information can hinder medical care for evacuees and the reconstruction of medical facilities damaged by major incidents. In Japan, health insurance coverage is universal, and information about diagnoses and health care services provided is shared by the medical facilities, Health Insurance Claims Review and Reimbursement Services or the National Health Insurance Organization (NHIO), and the insurers. After the Great East Japan Earthquake on March 11, 2011, we interviewed officers in charge of NHIO in the 3 prefectures that were damaged by the earthquake and elicited how they assisted with medical care for evacuees and reconstruction of the damaged medical facilities.

Effects of family structure on risk of institutionalisation of disabled older people in Japan.

Aim: To examine the relationship between family structure and the risk of institutionalisation of disabled older people.

Methods: The participants were 286 disabled older people aged 65 or older who were eligible to receive formal care services under the long-term care insurance system in a town in western Japan. Family structure was categorised as living alone, living only with a spouse, living with a son, living with a daughter and living other relatives.

Moderate oxidative stress and high antioxidative activity are associated with steatosis in Japanese males.

Background And Aim: Steatosis is an increasingly common problem worldwide, accompanying increasing obesity. Recently, it has been suggested that oxidative stress plays an important role in development of fatty liver disease. We carried out an epidemiological study to clarify the role of oxidative stress and antioxidative activity in steatosis.

Measurement of high-molecular-weight adiponectin is not useful in assessing coronary stenosis.

Background: In many studies, high-molecular-weight (HMW) adiponectin has been considered the active form of adiponectin. However, whether HMW adiponectin is a good surrogate marker for coronary artery disease still needs to be elucidated.

Methods: We conducted a hospital-based cross-sectional study to examine the relationship between total, HMW or non-HMW adiponectin concentrations and coronary stenosis in 83 male patients and 138 male controls.

Urbanization and physician maldistribution: a longitudinal study in Japan.

Background: The relative shortage of physicians in Japan's rural areas is an important issue in health policy. In the 1970s, the Japanese government began a policy to increase the number of medical students and to achieve a better distribution of physicians. Beginning in 1985, however, admissions to medical school were reduced to prevent a future oversupply of physicians.