Hideo Yasunaga

Summary

Affiliation: University of Tokyo
Country: Japan

Publications

  1. ncbi request reprint Association between hospital case volume and mortality in non-elderly pneumonia patients stratified by severity: a retrospective cohort study
    Hiraku Kumamaru
    Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 1138655, Japan
    BMC Health Serv Res 14:302. 2014
  2. doi request reprint Body mass index and outcomes following gastrointestinal cancer surgery in Japan
    H Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Br J Surg 100:1335-43. 2013
  3. doi request reprint Outcomes after laparoscopic or open distal gastrectomy for early-stage gastric cancer: a propensity-matched analysis
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Ann Surg 257:640-6. 2013
  4. doi request reprint Effect and cost of treatment for acute pancreatitis with or without gabexate mesylate: a propensity score analysis using a nationwide administrative database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Pancreas 42:260-4. 2013
  5. doi request reprint The burden of Clostridium difficile-associated disease following digestive tract surgery in Japan
    H Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    J Hosp Infect 82:175-80. 2012
  6. pmc Variation in cancer surgical outcomes associated with physician and nurse staffing: a retrospective observational study using the Japanese Diagnosis Procedure Combination Database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Tokyo, Japan
    BMC Health Serv Res 12:129. 2012
  7. doi request reprint Factors affecting the occurrence of pulmonary embolism after spinal surgery: data from the national administrative database in Japan
    Kazuhiro Masuda
    Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Spine J 12:1029-34. 2012
  8. ncbi request reprint Comparison of outcomes after use of biphasic or monophasic defibrillators among out-of-hospital cardiac arrest patients: a nationwide population-based observational study
    Seizan Tanabe
    Emergency Life Saving Technique Academy of Tokyo, 4 5 Minamiosawa, Hachioji, Tokyo, Japan
    Circ Cardiovasc Qual Outcomes 5:689-96. 2012
  9. doi request reprint Risk factors for pulmonary embolism and the effects of fondaparinux after total hip and knee arthroplasty: a retrospective observational study with use of a national database in Japan
    Yuichi Nagase
    Department of Orthopedic Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Bone Joint Surg Am 93:e146. 2011
  10. doi request reprint Impact of hospital volume on postoperative complications and in-hospital mortality after musculoskeletal tumor surgery: analysis of a national administrative database
    Koichi Ogura
    Departments of Orthopaedic Surgery K Ogura, Y S, S T, H K, Health Management and Policy H Y, H H, and Medical Informatics and Economics K Ohe, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan E mail address for H Kawano
    J Bone Joint Surg Am 95:1684-91. 2013

Detail Information

Publications78

  1. ncbi request reprint Association between hospital case volume and mortality in non-elderly pneumonia patients stratified by severity: a retrospective cohort study
    Hiraku Kumamaru
    Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 1138655, Japan
    BMC Health Serv Res 14:302. 2014
    ....
  2. doi request reprint Body mass index and outcomes following gastrointestinal cancer surgery in Japan
    H Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Br J Surg 100:1335-43. 2013
    ....
  3. doi request reprint Outcomes after laparoscopic or open distal gastrectomy for early-stage gastric cancer: a propensity-matched analysis
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Ann Surg 257:640-6. 2013
    ..In a large nationwide administrative database of hospitalized patients, we investigated postoperative outcomes after laparoscopic or open distal gastrectomy in Japan...
  4. doi request reprint Effect and cost of treatment for acute pancreatitis with or without gabexate mesylate: a propensity score analysis using a nationwide administrative database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Pancreas 42:260-4. 2013
    ..The present study examined the effect and cost of GM for AP treatment using the Japanese Diagnosis Procedure Combination database...
  5. doi request reprint The burden of Clostridium difficile-associated disease following digestive tract surgery in Japan
    H Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    J Hosp Infect 82:175-80. 2012
    ..Although surgery is considered a risk for Clostridium difficile-associated disease (CDAD), large-scale data on outcomes of postsurgical CDAD are rare...
  6. pmc Variation in cancer surgical outcomes associated with physician and nurse staffing: a retrospective observational study using the Japanese Diagnosis Procedure Combination Database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Tokyo, Japan
    BMC Health Serv Res 12:129. 2012
    ..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...
  7. doi request reprint Factors affecting the occurrence of pulmonary embolism after spinal surgery: data from the national administrative database in Japan
    Kazuhiro Masuda
    Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Spine J 12:1029-34. 2012
    ..To the best of our knowledge, few large studies have examined the prevalence and risk factors of PE after spinal surgery...
  8. ncbi request reprint Comparison of outcomes after use of biphasic or monophasic defibrillators among out-of-hospital cardiac arrest patients: a nationwide population-based observational study
    Seizan Tanabe
    Emergency Life Saving Technique Academy of Tokyo, 4 5 Minamiosawa, Hachioji, Tokyo, Japan
    Circ Cardiovasc Qual Outcomes 5:689-96. 2012
    ....
  9. doi request reprint Risk factors for pulmonary embolism and the effects of fondaparinux after total hip and knee arthroplasty: a retrospective observational study with use of a national database in Japan
    Yuichi Nagase
    Department of Orthopedic Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Bone Joint Surg Am 93:e146. 2011
    ....
  10. doi request reprint Impact of hospital volume on postoperative complications and in-hospital mortality after musculoskeletal tumor surgery: analysis of a national administrative database
    Koichi Ogura
    Departments of Orthopaedic Surgery K Ogura, Y S, S T, H K, Health Management and Policy H Y, H H, and Medical Informatics and Economics K Ohe, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan E mail address for H Kawano
    J Bone Joint Surg Am 95:1684-91. 2013
    ..The aim of the present study was to use a nationally representative inpatient database to evaluate the impact of hospital volume on the rates of postoperative complications and in-hospital mortality after musculoskeletal tumor surgery...
  11. doi request reprint Comparison of neurological outcome between tracheal intubation and supraglottic airway device insertion of out-of-hospital cardiac arrest patients: a nationwide, population-based, observational study
    Seizan Tanabe
    Foundation for Ambulance Service Development, Emergency Life Saving Technique Academy of Tokyo, Tokyo, Japan
    J Emerg Med 44:389-97. 2013
    ..The effect of prehospital use of supraglottic airway devices as an alternative to tracheal intubation on long-term outcomes of patients with out-of-hospital cardiac arrest is unclear...
  12. doi request reprint Analysis of factors affecting operating time, postoperative complications, and length of stay for total knee arthroplasty: nationwide web-based survey
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Orthop Sci 14:10-6. 2009
    ..This study aimed to clarify the impact of various factors on the operating time, postoperative complications, and length of stay (LOS) after total knee arthroplasty (TKA)...
  13. doi request reprint Impact of remifentanil use on early postoperative outcomes following brain tumor resection or rectal cancer surgery
    Kanji Uchida
    Department of Anesthesiology, Tokyo University Graduate School of Medicine, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Anesth 26:711-20. 2012
    ..Remifentanil, a mu-opioid receptor agonist, has important characteristics for neuroanesthesia, but data about its effects on postoperative recovery and mortality are currently lacking...
  14. pmc Population density, call-response interval, and survival of out-of-hospital cardiac arrest
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Int J Health Geogr 10:26. 2011
    ....
  15. doi request reprint Effect of time and day of admission on 1-month survival and neurologically favourable 1-month survival in out-of-hospital cardiopulmonary arrest patients
    Soichi Koike
    Department of Planning, Information and Management, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo, Tokyo 113 8655, Japan
    Resuscitation 82:863-8. 2011
    ..We sought to examine whether the outcomes of out-of-hospital cardiopulmonary arrest (OHCA) patients differed between weekday and weekend/holiday admissions, or between daytime and nighttime admissions...
  16. doi request reprint Long-term career transition in the surgical workforce of Japan: a retrospective cohort study using the nationwide survey of physicians data from 1972 to 2006
    Hiroo Ide
    Department of Planning, Information and Management, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    World J Surg 34:1748-55. 2010
    ..However, little is known about surgeons' career changes in circumstances where physicians can freely choose their specialty. Differing career transitions among surgical specialties were hypothesized...
  17. doi request reprint Longer operative time is associated with higher risk of severe complications after percutaneous nephrolithotomy: analysis of 1511 cases from a Japanese nationwide database
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan Department of Urology, The University of Tokyo, Tokyo, Japan
    Int J Urol 20:1193-8. 2013
    ..To evaluate risk factors of severe adverse events after percutaneous nephrolithotomy with an emphasis on operation time, and to develop a nomogram for predicting them...
  18. ncbi request reprint Risk-adjusted analyses of the effects of hospital and surgeon volumes on postoperative complications and the modified Rankin scale after clipping of unruptured intracranial aneurysms in Japan
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Neurol Med Chir (Tokyo) 48:531-8; discussion 538. 2008
    ..Therefore, the justification for hospital volume-based policies remains unclear. Prospective risk-adjusted volume-based studies are required for future evidence-based referral policies...
  19. doi request reprint Impact of remifentanil introduction on practice patterns in general anesthesia
    Kanji Uchida
    Department of Anesthesiology, Tokyo University Graduate School of Medicine, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Anesth 25:864-71. 2011
    ..The introduction of new medicine can change clinical practice patterns and may affect patient outcomes. In the present study, we investigated whether introduction of remifentanil in Japan affected the practice patterns of anesthesia...
  20. doi request reprint Impact of hospital volume on chest tube duration, length of stay, and mortality after lobectomy
    Hiroshi Otake
    Department of Anesthesiology, School of Medicine, Teikyo University, Tokyo, Japan
    Ann Thorac Surg 92:1069-74. 2011
    ..We investigated the effects of hospital volume on various outcomes after lobectomy for lung cancer, including chest tube duration, postoperative length of stay, and in-hospital mortality...
  21. pmc Collapse-to-emergency medical service cardiopulmonary resuscitation interval and outcomes of out-of-hospital cardiopulmonary arrest: a nationwide observational study
    Soichi Koike
    Department of Planning, Information and Management, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    Crit Care 15:R120. 2011
    ..We sought to examine all causes of cardiac arrest and analyze the relationship between collapse-to-EMS CPR interval and outcome in a nationwide sample using an out-of-hospital cardiac arrest (OHCA) registry...
  22. ncbi request reprint Impact of hospital volume on postoperative complications and in-hospital mortality after renal surgery: data from the Japanese Diagnosis Procedure Combination Database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Japan
    Urology 76:548-52. 2010
    ..This study analyzed the influence of hospital volume on postoperative complications and in-hospital mortality after nephrectomy or nephroureterectomy...
  23. doi request reprint Health care costs related to out-of-hospital cardiopulmonary arrest in Japan
    Tatsuma Fukuda
    Department of Emergency and Critical Care Medicine, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Resuscitation 84:964-9. 2013
    ..The present study aimed to analyze health care costs related to OHCA using a nationwide administrative database in Japan...
  24. pmc Intussusception among Japanese children: an epidemiologic study using an administrative database
    Masato Takeuchi
    Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan
    BMC Pediatr 12:36. 2012
    ..The aim of this study was to describe the epidemiology of childhood intussusception in Japan using data from a nationwide inpatient database...
  25. ncbi request reprint Effects of hospital and surgeon volumes on operating times, postoperative complications, and length of stay following laparoscopic colectomy
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo 113 8655, Japan
    Surg Today 39:955-61. 2009
    ..We conducted this study to clarify the effects of hospital volume and surgeon volume on operating times, postoperative complications, and length of stay following laparoscopic colectomy...
  26. doi request reprint High-volume surgeons in regard to reductions in operating time, blood loss, and postoperative complications for total hip arthroplasty
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Orthop Sci 14:3-9. 2009
    ..The purpose of this study was to clarify the volume-outcome relations for total hip arthroplasty, with a particular focus on outcome variables such as operating time, blood loss, and postoperative complications...
  27. ncbi request reprint Effects of hospital and surgeon case-volumes on postoperative complications and length of stay after esophagectomy in Japan
    Hideo Yasunaga
    Department of Health Management and Policy, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Surg Today 39:566-71. 2009
    ..This study investigates the effect of surgical volumes on reducing postoperative complications and length of stay after esophagectomy...
  28. doi request reprint Does mechanical bowel preparation improve quality of laparoscopic nephrectomy? Propensity score-matched analysis in Japanese series
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan
    Urology 81:74-9. 2013
    ..To assess the effect of mechanical bowel preparation (MBP) before laparoscopic nephrectomy in terms of operation time and perioperative complications...
  29. ncbi request reprint Perioperative factors affecting the occurrence of acute complex regional pain syndrome following limb bone fracture surgery: data from the Japanese Diagnosis Procedure Combination database
    Masahiko Sumitani
    Department of Anesthesiology and Pain Relief Center, Department of Medical Engineering, The University of Tokyo Hospital, Department of Health Economics and Epidemiology Research, School of Public Health, University of Tokyo, Department of Clinical Data Management and Research, Clinical Research Center, National Hospital Organization Headquarters, Department of Orthopaedic Surgery, School of Medicine, Keio University, Department of Medical Informatics and Economics, Graduate School of Medicine, University of Tokyo, Department of Health Policy and Informatics, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo and Department of Preventive Medicine and Community Health, University of Occupational and Environmental Health, Fukuoka, Japan Department of Anesthesiology and Pain Relief Center, Department of Medical Engineering, The University of Tokyo Hospital, Department of Health Economics and Epidemiology Research, School of Public Health, University of Tokyo, Department of Clinical Data Management and Research, Clinical Research Center, National Hospital Organization Headquarters, Department of Orthopaedic Surgery, School of Medicine, Keio University, Department of Medical Informatics and Economics, Graduate School of Medicine, University of Tokyo, Department of Health Policy and Informatics, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo and Department of Preventive Medicine and Community Health, University of Occupational and Environmental Health, Fukuoka, Japan
    Rheumatology (Oxford) 53:1186-93. 2014
    ..This study aimed to show the occurrence and identify of those factors...
  30. ncbi request reprint Postoperative polymyxin B hemoperfusion and mortality in patients with abdominal septic shock: a propensity-matched analysis
    Masao Iwagami
    1Department of Hemodialysis and Apheresis, The University of Tokyo Hospital, Tokyo, Japan 2Department of Health Economics and Epidemiology Research, School of Public Health, The University of Tokyo, Tokyo, Japan 3Department of Emergency and Critical Care Medicine, The University of Tokyo Hospital, Tokyo, Japan 4Department of Clinical Data Management and Research, Clinical Research Center, National Hospital Organization Headquarters, Tokyo, Japan 5Department of Health Informatics and Policy, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
    Crit Care Med 42:1187-93. 2014
    ....
  31. doi request reprint Acute liver disease in Japan: a nationwide analysis of the Japanese Diagnosis Procedure Combination database
    Masaya Sato
    Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Gastroenterol 49:547-54. 2014
    ..Accurate data on the incidence of acute liver disease (ALD) is lacking in most countries. We investigated the incidence of ALD-related admission in Japan using a large sample in a nationwide Japanese database...
  32. doi request reprint Regional, institutional and individual factors affecting selection of minimally invasive nephroureterectomy in Japan: a national database analysis
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan Department of Urology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
    Int J Urol 20:695-700. 2013
    ..To reveal individual, institutional and regional factors affecting selection of minimally invasive nephroureterectomy in Japan...
  33. ncbi request reprint Length of mechanical restraint following haloperidol injections versus oral atypical antipsychotics for the initial treatment of acute schizophrenia: a propensity-matched analysis from the Japanese diagnosis procedure combination database
    Mitsuhiro Nakamura
    Department of Psychiatry, Yokohama Camellia Hospital, Kanagawa, Japan Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan Electronic address
    Psychiatry Res 209:412-6. 2013
    ..The results indicate that atypical antipsychotics were as effective as haloperidol injections in the acute-phase treatment of schizophrenia. ..
  34. pmc Severe bleeding and perforation are rare complications of endoscopic ultrasound-guided fine needle aspiration for pancreatic masses: an analysis of 3,090 patients from 212 hospitals
    Tsuyoshi Hamada
    Department of Gastroenterology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
    Gut Liver 8:215-8. 2014
    ..Because the incidence and severity of these complications have not been fully evaluated...
  35. pmc Mortality and morbidity after high-dose methylprednisolone treatment in patients with acute cervical spinal cord injury: a propensity-matched analysis using a nationwide administrative database
    Hirotaka Chikuda
    Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
    Emerg Med J 31:201-6. 2014
    ..To examine the magnitude of the adverse impact of high-dose methylprednisolone treatment in patients with acute cervical spinal cord injury (SCI)...
  36. pmc Retention rate of physicians in public health administration agencies and their career paths in Japan
    Soichi Koike
    Department of Planning, Information and Management, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    BMC Health Serv Res 10:101. 2010
    ..The aim of this study is to analyze the retention and career paths of such specialists in Japan...
  37. doi request reprint The dynamics of obstetricians and gynecologists in Japan: a retrospective cohort model using the nationwide survey of physicians data
    Hiroo Ide
    Department of Planning, Information and Management, The University of Tokyo Hospital, Tokyo, Japan
    J Obstet Gynaecol Res 35:761-6. 2009
    ..A shortage of obstetricians and gynecologists (OB/GYNs) in Japan has been highlighted. We conducted a descriptive and retrospective cohort study using data from the Survey of Physicians in Japan, and analyzed the dynamics of OB/GYNs...
  38. ncbi request reprint Delay in tetracycline treatment increases the risk of complications in Tsutsugamushi disease: data from the Japanese Diagnosis Procedure Combination database
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Japan
    Intern Med 50:37-42. 2011
    ..It also remains unclear how a delay in effective treatments affects the occurrence of complications associated with this Rickettsial disease...
  39. pmc Estimation of physician supply by specialty and the distribution impact of increasing female physicians in Japan
    Soichi Koike
    Department of Planning, Information and Management, University of Tokyo Hospital, Tokyo, Japan
    BMC Health Serv Res 9:180. 2009
    ..The purpose of this study is to estimate the future supply of physicians by specialty and to predict the associated impact of increased female physicians, as well as to discuss the possible policy implications...
  40. ncbi request reprint Specialty choice and physicians' career paths in Japan: an analysis of National Physician Survey data from 1996 to 2006
    Soichi Koike
    Department of Planning, Information and Management, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo, Tokyo 113 8655, Japan
    Health Policy 98:236-44. 2010
    ..To investigate trends of specialty distribution and physicians' career paths in Japan, and to discuss potential policy implications...
  41. doi request reprint Pyloromyotomy versus i.v. atropine therapy for the treatment of infantile pyloric stenosis: nationwide hospital discharge database analysis
    Masato Takeuchi
    Department of Pediatrics, University of Tokyo Hospital, Tokyo, Japan
    Pediatr Int 55:488-91. 2013
    ..Several studies have suggested that i.v. atropine has a potential role in treating infantile hypertrophic pyloric stenosis (IHPS). It remains unclear, however, whether surgery can be replaced by i.v. therapy...
  42. doi request reprint Impact of hospital volume on outcomes in acute pancreatitis: a study using a nationwide administrative database
    Tsuyoshi Hamada
    Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Gastroenterol 49:148-55. 2014
    ..Using a Japanese nationwide administrative database, this study aimed to evaluate the volume-outcome relationship in acute pancreatitis by means of statistical methods that permitted such considerations...
  43. doi request reprint Japanese severity score for acute pancreatitis well predicts in-hospital mortality: a nationwide survey of 17,901 cases
    Tsuyoshi Hamada
    Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Gastroenterol 48:1384-91. 2013
    ..The Japanese severity score, which consists of nine prognostic factors, is reported to be useful for assessment of acute pancreatitis severity, but has not been validated by large-scale data...
  44. doi request reprint Shortage of pediatricians in Japan: a longitudinal analysis using physicians' survey data
    Hiroo Ide
    Department of Planning, Information, and Management, The University of Tokyo Hospital, Tokyo, Japan
    Pediatr Int 51:645-9. 2009
    ..In the present study, using data from the Survey of Physicians, Dentists, and Pharmacists in Japan, we analyzed the dynamics and distribution of pediatricians, using a time series approach...
  45. ncbi request reprint Volume-outcome relationship in rectal cancer surgery: a new perspective
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Bunkyo ku, Tokyo, Japan
    Surg Today 39:663-8. 2009
    ..However, little is known about the association between hospital/surgeon volumes and postoperative complications, including anastomotic leakage and infection, following rectal cancer surgery...
  46. doi request reprint Characteristics and outcomes of pediatric out-of-hospital cardiac arrest by scholastic age category
    Manabu Akahane
    Department of Public Health, Health Management and Policy, Nara Medical University School of Medicine, Nara, Japan
    Pediatr Crit Care Med 14:130-6. 2013
    ....
  47. doi request reprint Difference in willingness-to-pay for prostate cancer screening between ill-informed and well-informed men: a contingent valuation survey
    Hideo Yasunaga
    Department of Health Management and Policy, University of Tokyo Graduate School of Medicine, Tokyo, Japan
    Urology 77:1325-9. 2011
    ..However, PSA screening is associated with considerable risks, and men should be well informed about the risks before deciding to undergo the test...
  48. doi request reprint Comparisons of perioperative outcomes and costs between open and laparoscopic radical prostatectomy: a propensity-score matching analysis based on the Japanese Diagnosis Procedure Combination database
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan
    Int J Urol 20:349-53. 2013
    ..3% vs 15.7%, Pā€‰=ā€‰0.144). The multivariate analyses showed similar trends. In conclusion, these findings confirm several benefits of laparoscopy over open approach for radical prostatectomy...
  49. doi request reprint Impact of surgical intervention timing on the case fatality rate for Fournier's gangrene: an analysis of 379 cases
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan
    BJU Int 110:E1096-100. 2012
    ..5-40%, and experts recommend early surgical debridement. This study examines 379 patients and shows that an early intervention, i.e. within 2 hospital days could halve the mortality rate compared with later intervention...
  50. doi request reprint Impact of surgeon and hospital volumes on short-term postoperative complications after radical hysterectomy for cervical cancer
    Hideo Yasunaga
    Department of Health Management, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Obstet Gynaecol Res 35:699-705. 2009
    ..The present study aims to clarify the effect of provider volumes on short-term postoperative complications after radical hysterectomy for cervical cancer...
  51. pmc An exploration of the association between very early rehabilitation and outcome for the patients with acute ischaemic stroke in Japan: a nationwide retrospective cohort survey
    Hiroki Matsui
    Department of Health Economics and Epidemiology Research, School of Public Health, The University of Tokyo, Bunkyo ku, Tokyo, Japan
    BMC Health Serv Res 10:213. 2010
    ..The purpose of this study was to investigate the association between very early intervention (VEI), and patient outcomes at discharge by using nationwide large data and statistical treatment for selection bias...
  52. pmc Short report: Venomous snake bites in Japan
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Am J Trop Med Hyg 84:135-6. 2011
    ..67 bites/100,000/6 months. It is important to continue collecting all available data to monitor the trends of this life-threatening disease...
  53. ncbi request reprint Measles-related hospitalizations and complications in Japan, 2007-2008
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo
    Intern Med 49:1965-70. 2010
    ..In the present study we aim to describe the clinical features and related complications of severe measles requiring hospitalization in Japan in 2007 and 2008...
  54. ncbi request reprint Does mechanical bowel preparation ameliorate damage from rectal injury in radical prostatectomy? Analysis of 151 rectal injury cases
    Toru Sugihara
    Department of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, Ohio, USA Department of Urology, The University of Tokyo, Fukuoka, Japan
    Int J Urol 21:566-70. 2014
    ..To evaluate whether mechanical bowel preparation before radical prostatectomy ameliorates damage from rectal injury in radical prostatectomy...
  55. doi request reprint Development and analysis of a nationwide cost database of acute-care hospitals in Japan
    Kenshi Hayashida
    Department of Healthcare Economics and Quality Management, Graduate School of Medicine, Kyoto University, Kyoto, Japan
    J Eval Clin Pract 15:626-33. 2009
    ....
  56. doi request reprint Mortality and morbidity of hepatectomy, radiofrequency ablation, and embolization for hepatocellular carcinoma: a national survey of 54,145 patients
    Masaya Sato
    Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    J Gastroenterol 47:1125-33. 2012
    ....
  57. ncbi request reprint Impact of drug-eluting stents on treatment option mix for coronary artery disease in Japan
    Hiromasa Horiguchi
    Department of Health Management and Policy, Graduate School of Medicine, School of Public Health, University of Tokyo, Tokyo, Japan
    Circ J 74:1635-43. 2010
    ..The aim of the present study was to clarify how DES affected the proportions of percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) procedures performed in Japan...
  58. doi request reprint Renal haemorrhage risk after extracorporeal shockwave lithotripsy: results from the Japanese Diagnosis Procedure Combination Database
    Toru Sugihara
    Department of Urology, Shintoshi Hospital, Iwata, Japan
    BJU Int 110:E332-8. 2012
    ..To assess clinical and mechanical risk factors of clinically significant renal haemorrhage after extracorporeal shock wave lithotripsy (ESWL)...
  59. doi request reprint Impact of hospital volume and laser use on postoperative complications and in-hospital mortality in cases of benign prostate hyperplasia
    Toru Sugihara
    School of Public Health, The University of Tokyo, Tokyo, Japan
    J Urol 185:2248-53. 2011
    ..We analyzed the impact of hospital volume and laser use on postoperative complications and in-hospital mortality in transurethral prostatic surgery...
  60. pmc Effect of the Japanese herbal kampo medicine dai-kenchu-to on postoperative adhesive small bowel obstruction requiring long-tube decompression: a propensity score analysis
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo 113 0033, 7 3 1, Hongo, Bunkyo ku, Tokyo, Japan
    Evid Based Complement Alternat Med 2011:264289. 2011
    ..018), and lower hospital charges ($23,086 versus $26,950; P = .018) compared with Dai-kenchu-to nonusers. In conclusion, the present study suggests that Dai-kenchu-to is effective for reducing the duration of LTD and saving costs...
  61. doi request reprint Influence of hospital and surgeon volumes on operative time, blood loss and perioperative complications in radical nephrectomy
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Int J Urol 15:688-93. 2008
    ....
  62. pmc Collaborative effects of bystander-initiated cardiopulmonary resuscitation and prehospital advanced cardiac life support by physicians on survival of out-of-hospital cardiac arrest: a nationwide population-based observational study
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Crit Care 14:R199. 2010
    ..Furthermore, the relative importance of bystander-initiated cardiopulmonary resuscitation (BCPR) and ACLS and the effectiveness of their combination have not been clearly demonstrated...
  63. ncbi request reprint A future estimate of physician distribution in hospitals and clinics in Japan
    Soichi Koike
    Department of Planning, Information and Management, The University of Tokyo Hospital, Tokyo, Japan
    Health Policy 92:244-9. 2009
    ..To make future estimates of physician distributions in hospitals and clinics to better understand the impact of recent health policy changes in post graduate clinical education, and to discuss possible policy implications...
  64. pmc Incidence and risk factors for pulmonary embolism after primary musculoskeletal tumor surgery
    Koichi Ogura
    Department of Orthopaedic Surgery, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Clin Orthop Relat Res 471:3310-6. 2013
    ....
  65. doi request reprint Rarity of severe bleeding and perforation in endoscopic ultrasound-guided fine needle aspiration for submucosal tumors
    Tsuyoshi Hamada
    Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Dig Dis Sci 58:2634-8. 2013
    ..Although bleeding and perforation are potentially severe complications of EUS-FNA, the incidences and severities of these complications have not yet been fully evaluated because of their relative rarity...
  66. doi request reprint Mortality and morbidity in dialysis-dependent patients undergoing spinal surgery: analysis of a national administrative database in Japan
    Hirotaka Chikuda
    Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    J Bone Joint Surg Am 94:433-8. 2012
    ....
  67. doi request reprint Clinical features of infants hospitalized for 2009 pandemic influenza A (H1N1) in Japan: analysis using a national hospital discharge database
    Masato Takeuchi
    Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan
    Pediatr Infect Dis J 31:368-72. 2012
    ..Earlier studies reported that infants <12 months of age were at high risk of hospitalization for 2009 pandemic influenza A H1N1 virus (2009 H1N1) infection, but there was little information about the clinical courses in these patients...
  68. pmc Clinical features of bowel anisakiasis in Japan
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Am J Trop Med Hyg 83:104-5. 2010
    ..6 days. The annual incidence of bowel anisakiasis is estimated to be about 3.0 per 1 million people per year. It is important to continue collecting all available data to monitor the trends of this distressing condition...
  69. doi request reprint Acute hepatitis B in Japan: Incidence, clinical practices and health policy
    Akahito Sako
    Department of Gastroenterology, National Center for Global Health and Medicine Department of Health Management and Policy, Graduate School of Medicine Department of Health Economics and Epidemiology Research, School of Public Health, University of Tokyo, Tokyo Department of Preventive Medicine and Community Health, University of Occupational and Environmental Health, Fukuoka, Japan
    Hepatol Res 41:39-45. 2011
    ..The establishment and distribution of appropriate clinical evidence and guidelines are vital to improve the clinical practices for acute hepatitis B...
  70. ncbi request reprint Who wants cancer screening with PET? A contingent valuation survey in Japan
    Hideo Yasunaga
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Hongo 7 3 1, Bunkyo ku, Tokyo 1138655, Japan
    Eur J Radiol 70:190-4. 2009
    ..We measured the general public's willingness to pay (WTP) for this service using a contingent valuation method, after providing them with sufficient information regarding the efficacy and limitations of the service...
  71. ncbi request reprint The burden of epiglottitis among Japanese children before the Haemophilus influenzae type b vaccination era: an analysis using a nationwide administrative database
    Masato Takeuchi
    Department of Pediatrics, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Infect Chemother 19:876-9. 2013
    ..Our study demonstrated the substantial burden of epiglottitis among Japanese children, highlighting that a routine Hib vaccination program is essential...
  72. doi request reprint The association of hospital volume with mortality and costs of care for stroke in Japan
    Yusuke Tsugawa
    Harvard Interfaculty Initiative in Health Policy, Cambridge, MA, USA
    Med Care 51:782-8. 2013
    ..The association between hospital volume and patient outcomes remains unclear for stroke. Little is known about whether these relationships differ by stroke subtypes...
  73. pmc A user-friendly tool to transform large scale administrative data into wide table format using a MapReduce program with a Pig Latin based script
    Hiromasa Horiguchi
    Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 1138555, Japan
    BMC Med Inform Decis Mak 12:151. 2012
    ..We have also developed, as an open-source project, several user-defined functions to transform the table format using GroupFilterFormat and to deal with processing that considers date conditions...
  74. doi request reprint Prevalence of malignant hyperthermia and relationship with anesthetics in Japan: data from the diagnosis procedure combination database
    Masahiko Sumitani
    Department of Anesthesiology and Pain Relief Center, University of Tokyo Hospital, Tokyo, Japan
    Anesthesiology 114:84-90. 2011
    ..The actual prevalence of MH remains unclear, and the association between MH and various anesthetic drugs remains controversial because of a lack of universal reporting...
  75. ncbi request reprint Statistics for orthopedic surgery 2006-2007: data from the Japanese Diagnosis Procedure Combination database
    Yuho Kadono
    Department of Orthopaedic Surgery, Sensory and Motor System Medicine, Surgical Sciences, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Orthop Sci 15:162-70. 2010
    ..6%). CONCLUSIONS: This study presents an overview of the clinical features of orthopedic surgery in Japan, which may be of value for determining therapeutic strategies in the management of orthopedic surgery patients...
  76. ncbi request reprint The impact of media reports on the 2008 outbreak of hydrogen sulfide suicides in Japan
    Mitsuhiro Nakamura
    Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Japan
    Int J Psychiatry Med 44:133-40. 2012
    ..However, the factors affecting this enormous increase remain unknown. The present study aimed to examine the effect of media coverage of the incidents on the subsequent epidemic of HSS...
  77. doi request reprint Cost containment and quality of care in Japan: is there a trade-off?
    Hideki Hashimoto
    Department of Health Economics and Epidemiology Research, University of Tokyo, Tokyo, Japan
    Lancet 378:1174-82. 2011
    ....