Shinya Matsuda

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OBJECTIVES This study aimed to describe the clinical and procedural characteristics of drug poisoning, to examine procedural differences between drug poisoning repeaters and non-repeaters, and to estimate the costs of drug poisoning. METHODS A retrospective cohort study of a nationally representative sample of 6585 inpatients with drug poisoning was(More)
OBJECTIVE To compare the clinical and procedural characteristics of emergency hospital admissions for drug poisoning and major diseases. DESIGN Retrospective observational study. SETTING Discharged patients from 855 acute care hospitals from 1 July to 31 December in 2008 in Japan. RESULTS There were a total of 1 157 893 emergency hospital admissions.(More)
BACKGROUND Principles and methods for the allocation of healthcare resources among healthcare providers have long been health policy research issues in many countries. Healthcare reforms including the development of a new case-mix system, Diagnosis Procedure Combination (DPC), and the introduction of a DPC-based payment system are currently underway in(More)
By the introduction of a public, mandatory program of Long-Term Care Insurance (LTCI) on April 1, 2000, Japan has moved towards a system of social care for the frail and elderly. The program covers care that is both home-based and institutional. Fifty percent of the insurance is financed from the general tax and the other fifty percent from the premiums of(More)
Adhesive small bowel obstruction (ASBO) is an adverse consequence of abdominal surgery. Although the Kampo medicine Dai-kenchu-to is widely used in Japan for treatment of postoperative ASBO, rigorous clinical studies for its use have not been performed. In the present retrospective observational study using the Japanese diagnosis procedure combination(More)
BACKGROUND Little is known about the effects of professional staffing on cancer surgical outcomes. The present study aimed to investigate the association between cancer surgical outcomes and physician/nurse staffing in relation to hospital volume. METHODS We analyzed 131,394 patients undergoing lung lobectomy, esophagectomy, gastrectomy, colorectal(More)
OBJECTIVE In-hospital mortality is an important performance measure for quality improvement, although it requires proper risk adjustment. We set out to develop in-hospital mortality prediction models for acute hospitalization using a nation-wide electronic administrative record system in Japan. METHODS Administrative records of 224,207 patients (patients(More)
A variety of extracellular factors regulate morphogenesis during development. However, coordination between extracellular signaling and dynamic morphogenesis is largely unexplored. We address the fundamental question by studying posterior crossvein (PCV) development in Drosophila as a model, in which long-range BMP transport from the longitudinal veins(More)
BACKGROUND The epidemiology of intussusception, including its incidence, can vary between different countries. The aim of this study was to describe the epidemiology of childhood intussusception in Japan using data from a nationwide inpatient database. METHODS We screened the database for eligible cases ≤ 18 years of age, who were coded with a discharge(More)
Bone morphogenetic proteins (BMPs) act as morphogens to control patterning and growth in a variety of developing tissues in different species. How BMP morphogen gradients are established and interpreted in the target tissues has been extensively studied in Drosophila melanogaster. In Drosophila, Decapentaplegic (Dpp), a homologue of vertebrate BMP2/4, acts(More)