Kawahara Takuya 川原拓也

Researcher Number	10792450
Other IDs
Affiliation (Current)	2025: 東京大学, 医学部附属病院, 助教
Affiliation (based on the past Project Information) *help	2018 – 2024: 東京大学, 医学部附属病院, 助教
Review Section/Research Field	Principal Investigator Basic Section 58010:Medical management and medical sociology-related Except Principal Investigator Basic Section 60030:Statistical science-related
Keywords	Principal Investigator 臨床試験 / 中間事象 / direct effect / estimand / 競合イベント / 欠測データ解析 / がん治療 / 患者報告型アウトカム / Estimand / Direct effect / Quality of life … More Except Principal Investigator … More 因果推論 / 臨床試験 / 個別化医療 / リスク・ベネフィット評価 / メタアナリシス Less

Statistical methods for quality of life data analysis measured in cancer clinical trialsPrincipal Investigator
- Principal Investigator
  
  川原拓也
- Project Period (FY)
  2023 – 2024
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 58010:Medical management and medical sociology-related
- Research Institution
  The University of Tokyo
Development of statistical methods that help to interpret randomized clinical trialsPrincipal Investigator
- Principal Investigator
  
  川原拓也
- Project Period (FY)
  2022 – 2026
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 58010:Medical management and medical sociology-related
- Research Institution
  The University of Tokyo
Re-evaluation of evidence reflecting patient's value with individual patient based meta-analysis
- Principal Investigator
  
  OBA Koji
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60030:Statistical science-related
- Research Institution
  The University of Tokyo

All 2023 2022 2021 2020 2019 2018

All Journal Article Presentation

[Journal Article] Impact of correlations between prioritized outcomes on?the?net benefit and its estimate by generalized pairwise comparisons2023
- Author(s)
  Fuyama Kanako、Ogawa Mitsunori、Mizusawa Junki、Kanemitsu Yukihide、Fujita Shin、Kawahara Takuya、Sakamaki Kentaro、Oba Koji
- Journal Title
  
  Statistics in Medicine
  
  Volume: 42 Issue: 10 Pages: 1606-1624
- DOI
  10.1002/sim.9690
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21H03401
[Journal Article] Statistical methods and graphical displays of quality of life with survival outcomes in oncology clinical trials for supporting the estimand framework2022
- Author(s)
  Sakamaki Kentaro、Kawahara Takuya
- Journal Title
  
  BMC Medical Research Methodology
  
  Volume: 22 Issue: 1 Pages: 1-11
- DOI
  10.1186/s12874-022-01735-1
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K19383, KAKENHI-PROJECT-21H03401, KAKENHI-PROJECT-18K17314
[Journal Article] Using Propensity Scores for Causal Inference: Pitfalls and Tips2021
- Author(s)
  Shiba Koichiro、Kawahara Takuya
- Journal Title
  
  Journal of Epidemiology
  
  Volume: 31 Issue: 8 Pages: 457-463
- DOI
  10.2188/jea.JE20210145
- NAID
  130008071835
- ISSN
  0917-5040, 1349-9092
- Year and Date
  2021-08-05
- Language
  English
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Causal Inference in Studying the Long-term Health Effects of Disasters: Challenges and Potential Solutions2021
- Author(s)
  Shiba Koichiro、Kawahara Takuya、Aida Jun、Kondo Katsunori、Kondo Naoki、James Peter、Arcaya Mariana、Kawachi Ichiro
- Journal Title
  
  American Journal of Epidemiology
  
  Volume: . Issue: 9 Pages: 1867-1881
- DOI
  10.1093/aje/kwab064
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K17314, KAKENHI-PROJECT-18H04071
[Journal Article] Doubly robust estimator of risk in the presence of censoring dependent on time-varying covariates: application to a primary prevention trial for coronary events with pravastatin2020
- Author(s)
  Kawahara Takuya、Shinozaki Tomohiro、Matsuyama Yutaka
- Journal Title
  
  BMC Medical Research Methodology
  
  Volume: 20 Issue: 1
- DOI
  10.1186/s12874-020-01087-8
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K11716, KAKENHI-PROJECT-18K17314
[Journal Article] Hospitalization for Patients on Combination Therapy With Peritoneal Dialysis and?Hemodialysis Compared With Hemodialysis2020
- Author(s)
  Tanaka Mototsugu、Ishibashi Yoshitaka、Hamasaki Yoshifumi、Kamijo Yuka、Idei Mayumi、Kawahara Takuya、Nishi Takahiro、Takeda Michio、Nonaka Hiroshi、Nangaku Masaomi、Mise Naobumi
- Journal Title
  
  Kidney International Reports
  
  Volume: 5 Issue: 4 Pages: 468-474
- DOI
  10.1016/j.ekir.2020.01.004
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Effect of aspirin use on gastric cancer incidence and survival: A systematic review and meta‐analysis2020
- Author(s)
  Niikura Ryota、Hirata Yoshihiro、Hayakawa Yoku、Kawahara Takuya、Yamada Atsuo、Koike Kazuhiko
- Journal Title
  
  JGH Open
  
  Volume: 4 Issue: 2 Pages: 117-125
- DOI
  10.1002/jgh3.12226
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Egg-shell like Calcification as a Protective Factor for Splenic Artery Aneurysm Dilatation2020
- Author(s)
  Sano Masaya、Hoshina Katsuyuki、Kawahara Takuya、Kimura Masaru、Akai Takafumi、Isaji Toshihiko、Yamamoto Kota、Takayama Toshio
- Journal Title
  
  Annals of Vascular Surgery
  
  Volume: 63 Pages: 193-197
- DOI
  10.1016/j.avsg.2019.08.102
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K17314, KAKENHI-PROJECT-19K24006, KAKENHI-PROJECT-17K10749
[Journal Article] Simple methods for the estimation and sensitivity analysis of principal strata effects using marginal structural models: Application to a bone fracture prevention trial2019
- Author(s)
  Uemura Yukari、Taguri Masataka、Kawahara Takuya、Chiba Yasutaka
- Journal Title
  
  Biometrical Journal
  
  Volume: 61 Issue: 6 Pages: 1448-1461
- DOI
  10.1002/bimj.201800038
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Hepatitis B virus recurrence after living donor liver transplantation of anti-HBc-positive grafts: A 22-year experience at a single center2019
- Author(s)
  Bae Sung Kwan、Akamatsu Nobuhisa、Togashi Junichi、Ichida Akihiko、Kawahara Takuya、Maki Harufumi、Nishioka Yujiro、Kokudo Takashi、Mihara Yuichiro、Kawaguchi Yoshikuni、Ishizawa Takeaki、Arita Junichi、Kaneko Junichi、Tamura Sumihito、Hasegawa Kiyoshi
- Journal Title
  
  BioScience Trends
  
  Volume: 13 Issue: 5 Pages: 448-455
- DOI
  10.5582/bst.2019.01283
- NAID
  130007744276
- ISSN
  1881-7815, 1881-7823
- Year and Date
  2019-10-31
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K15742, KAKENHI-PROJECT-18K17314
[Journal Article] Noisy galvanic vestibular stimulation has a greater ameliorating effect on posture in unstable subjects: a feasibility study2019
- Author(s)
  Fujimoto Chisato、Kinoshita Makoto、Kamogashira Teru、Egami Naoya、Kawahara Takuya、Uemura Yukari、Yamamoto Yoshiharu、Yamasoba Tatsuya、Iwasaki Shinichi
- Journal Title
  
  Scientific Reports
  
  Volume: 9 Issue: 1 Pages: 7-7
- DOI
  10.1038/s41598-019-53834-7
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K09369, KAKENHI-PROJECT-18K09370, KAKENHI-PROJECT-18K16906, KAKENHI-PROJECT-18K17314, KAKENHI-PLANNED-15H05940, KAKENHI-PROJECT-17K16895
[Journal Article] Influence of Smoking and Histologic Subtype on Developing Extrathymic Malignancy in Thymoma Patients2019
- Author(s)
  Yanagiya Masahiro, Matsumoto Jun, Kawahara Takuya, Yamaguchi Hirokazu, Nagayama Kazuhiro, Anraku Masaki, Sato Masaaki, Nakajima Jun
- Journal Title
  
  The Annals of Thoracic Surgery
  
  Volume: - Issue: 5 Pages: 1532-1539
- DOI
  10.1016/j.athoracsur.2018.11.038
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Nationwide observational study of mortality from complicated intra‐abdominal infections and the role of bacterial cultures2019
- Author(s)
  Tsuchiya A., Yasunaga H., Tsutsumi Y., Kawahara T., Matsui H., Fushimi K.
- Journal Title
  
  British Journal of Surgery
  
  Volume: 106 Issue: 5 Pages: 606-615
- DOI
  10.1002/bjs.11095
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K17314, KAKENHI-PROJECT-17H04141
[Journal Article] Camouflage makeup improves quality of life in cancer patients with treatment-related skin changes2019
- Author(s)
  Wakeda Takako、Okamura Tsuyoshi、Kawahara Takuya、Heike Yuji
- Journal Title
  
  Tumori Journal
  
  Volume: 106 Issue: 2 Pages: 95-100
- DOI
  10.1177/0300891619867844
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K17314
[Journal Article] Aging Is a Risk Factor for Utricular Dysfunction in Idiopathic Benign Paroxysmal Positional Vertigo2018
- Author(s)
  Fujimoto Chisato、Kawahara Takuya、Kinoshita Makoto、Kikkawa Yayoi S.、Sugasawa Keiko、Yagi Masato、Yamasoba Tatsuya、Iwasaki Shinichi、Murofushi Toshihisa
- Journal Title
  
  Frontiers in Neurology
  
  Volume: 9 Pages: 1049-1049
- DOI
  10.3389/fneur.2018.01049
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K09341, KAKENHI-PROJECT-18K09369, KAKENHI-PROJECT-18K09370, KAKENHI-PROJECT-18K17314, KAKENHI-PLANNED-15H05940, KAKENHI-PROJECT-15K10744, KAKENHI-PROJECT-15K10764, KAKENHI-ORGANIZER-15H05935
[Journal Article] Noisy Galvanic Vestibular Stimulation Sustainably Improves Posture in Bilateral Vestibulopathy2018
- Author(s)
  Fujimoto Chisato、Egami Naoya、Kawahara Takuya、Uemura Yukari、Yamamoto Yoshiharu、Yamasoba Tatsuya、Iwasaki Shinichi
- Journal Title
  
  Frontiers in Neurology
  
  Volume: 9 Pages: 900-900
- DOI
  10.3389/fneur.2018.00900
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K09369, KAKENHI-PROJECT-18K09370, KAKENHI-PROJECT-18K17314, KAKENHI-PLANNED-15H05940, KAKENHI-ORGANIZER-15H05935
[Journal Article] Tracheostomy and mortality in patients with severe burns: A nationwide observational study2018
- Author(s)
  Tsuchiya Asuka, Yamana Hayato, Kawahara Takuya, Tsutsumi Yusuke, Matsui Hiroki, Fushimi Kiyohide, Yasunaga Hideo
- Journal Title
  
  Burns
  
  Volume: 44 Issue: 8 Pages: 1954-1961
- DOI
  10.1016/j.burns.2018.06.012
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K17314, KAKENHI-PROJECT-17H04141
[Presentation] Estimands versus algorithms in studies with competing events and interest in treatment mechanism2023
- Author(s)
  Takuya Kawahara, Jessica Young
- Organizer
  6th International Conference on Econometrics and Statistics (EcoSta 2023)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K17301
[Presentation] Estimands versus algorithms in studies with competing events and interest in treatment mechanism2023
- Author(s)
  Takuya Kawahara, Jessica Young
- Organizer
  The 36th New England Statistics Symposium
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K17301
[Presentation] What is a Valid Mapping Algorithm in Cost-Utility Analyses? An Answer from a Missing Data Perspective2019
- Author(s)
  Hagiwara Y, Kawahara T, Shiroiwa T
- Organizer
  International Society for Pharmacoeconomics and Outcomes Research (ISPOR) Europe 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K17314
[Presentation] 非ランダム化比較試験を実施する際の統計学的事項1:傾向スコア2018
- Author(s)
  川原拓也
- Organizer
  第24回日本薬剤疫学会学術総会
- Data Source
  KAKENHI-PROJECT-18K17314
[Presentation] 動的治療レジメンの比較方法とその適用場面2018
- Author(s)
  上村夕香理、川原拓也、篠崎智大
- Organizer
  第24回日本薬剤疫学会学術総会
- Data Source
  KAKENHI-PROJECT-18K17314

1. OBA Koji (30422926)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
2. 坂巻顕太郎 (30644819)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
3. KIKKAWA Yayoi

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
4. 篠崎智大

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
5. 藤本千里

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results

Kawahara Takuya 川原 拓也

Research Projects

Research Products

Co-Researchers

Statistical methods for quality of life data analysis measured in cancer clinical trialsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Development of statistical methods that help to interpret randomized clinical trialsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Re-evaluation of evidence reflecting patient's value with individual patient based meta-analysis

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Impact of correlations between prioritized outcomes on?the?net benefit and its estimate by generalized pairwise comparisons2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Statistical methods and graphical displays of quality of life with survival outcomes in oncology clinical trials for supporting the estimand framework2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Using Propensity Scores for Causal Inference: Pitfalls and Tips2021

Author(s)

Journal Title

DOI

NAID

ISSN

Year and Date

Language

Data Source

[Journal Article] Causal Inference in Studying the Long-term Health Effects of Disasters: Challenges and Potential Solutions2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Doubly robust estimator of risk in the presence of censoring dependent on time-varying covariates: application to a primary prevention trial for coronary events with pravastatin2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Hospitalization for Patients on Combination Therapy With Peritoneal Dialysis and?Hemodialysis Compared With Hemodialysis2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Effect of aspirin use on gastric cancer incidence and survival: A systematic review and meta‐analysis2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Egg-shell like Calcification as a Protective Factor for Splenic Artery Aneurysm Dilatation2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Simple methods for the estimation and sensitivity analysis of principal strata effects using marginal structural models: Application to a bone fracture prevention trial2019

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Hepatitis B virus recurrence after living donor liver transplantation of anti-HBc-positive grafts: A 22-year experience at a single center2019

Author(s)

Journal Title

DOI

NAID

ISSN

Year and Date

Language

Data Source

Kawahara Takuya 川原拓也