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Statistical inference of dynamic treatment regimens in clinical trials directed toward personalized medicine

Research Project

Project/Area Number 20K11716
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 60030:Statistical science-related
Research InstitutionTokyo University of Science

Principal Investigator

Shinozaki Tomohiro  東京理科大学, 工学部情報工学科, 准教授 (60644482)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords統計的因果推論 / 個別化医療 / 動的治療レジメン / 臨床試験 / 疫学 / 効果異質性 / セミパラメトリック推測 / 臨床試験デザイン
Outline of Research at the Start

医療ビッグデータの基盤整備と医療費削減に対する社会的要請を背景に、より効果の大きな患者に治療を限定する「個別化医療」への期待が高まっている。しかし、日常診療では、いったん開始した治療を患者個人にどう適応させて継続・修正するのかも実際的な「個別化医療」の問題である。本研究は「統計的因果推論」の理論を軸として、データ取得の方法(臨床試験デザイン)と解析手法から後者の要請に応えるものであり、個別化医療の文脈で高いエビデンス供出力を維持しながら、研究対象人数・コスト面で実施可能性の高い研究方法の普及を目指す。

Outline of Final Research Achievements

In this study, we focused on "dynamic treatment regimes" as a statistical approach toward the establishment of personalized medicine. The research aimed to develop analytical methods that are robust to non-adherence to assigned regimes and trial designs that minimize the impact of the changes of regimes on optimal treatment selection. Specifically, the study addressed (1) the theoretical refinement of propensity score analysis, (2) the evaluation of estimation methods for direct effects using repeated measurement data with complex feedback structures between variables, (3) the data analysis for clinical studies applying dynamic treatment regimes, and (4) the performance evaluation of the g-formula.

Academic Significance and Societal Importance of the Research Achievements

データに基づく個別化医療の達成に向けたアプローチの一つである「動的治療レジメン」に関する解析手法の理論的基盤は未だ広く議論されているわけではない。本研究課題における、複雑なデータ構造における統計的因果推論を土台とした手法開発によって、傾向スコア解析(複雑なフィードバック構造データ解析で中心的役割)の理論整備、直接効果(複数変数への複雑な介入の定式化)、g-公式(広範な因果効果の一般化された識別公式)の理論検討につながった点で学術的意義を有する。さらに、がん臨床試験やCOVID-19の観察研究データ解析への適用により緊急性の高い疾患への医学的知見を創出することにもつながった。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (42 results)

All 2024 2023 2022 2021 2020

All Journal Article (20 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 15 results,  Open Access: 12 results) Presentation (21 results) (of which Int'l Joint Research: 8 results,  Invited: 16 results) Book (1 results)

  • [Journal Article] Time-varying living arrangements and suicide death in the general population sample: 14-year causal survival analysis via pooled logistic regression2024

    • Author(s)
      Zui Narita、Tomohiro Shinozaki、Atsushi Goto、Hiroaki Hori、Yoshiharu Kim、Holly C. Wilcox、Manami Inoue、Shoichiro Tsugane、Norie Sawada
    • Journal Title

      Epidemiology and Psychiatric Sciences

      Volume: in press

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Advancements of Biometrics in the Field of Epidemiology2024

    • Author(s)
      Taguri Masataka、Takahashi Kunihiko、Komukai Sho、Ito Yuri、Hattori Satoshi、Funatogawa Ikuko、Shinozaki Tomohiro、Yamamoto Michio、Hayashi Kenichi
    • Journal Title

      Japanese Journal of Biometrics

      Volume: 44 Issue: 2 Pages: 129-200

    • DOI

      10.5691/jjb.44.129

    • ISSN
      0918-4430, 2185-6494
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness of Specific Health Check-ups in Japan for the primary prevention of obesity-related diseases: a protocol for a target trial emulation2023

    • Author(s)
      Takeuchi Masato、Shinozaki Tomohiro、Kawakami Koji
    • Journal Title

      BMJ Open

      Volume: 13 Issue: 7 Pages: e070417-e070417

    • DOI

      10.1136/bmjopen-2022-070417

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative effectiveness of tocilizumab vs standard care in patients with severe COVID-19-related pneumonia: a retrospective cohort study utilizing registry data as a synthetic control2023

    • Author(s)
      Uemura Yukari、Ozaki Ryoto、Shinozaki Tomohiro、Ohtsu Hiroshi、Shimizu Yousuke、Izumi Kazuo、Saito Sho、Matsunaga Nobuaki、Ohmagari Norio
    • Journal Title

      BMC Infectious Diseases

      Volume: 23 Issue: 1

    • DOI

      10.1186/s12879-023-08840-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 因果媒介分析:Causal mediation analysis2023

    • Author(s)
      篠崎 智大
    • Journal Title

      臨床評価

      Volume: 51 Pages: 280-295

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Bias amplification in the g-computation algorithm for time-varying treatments: a case study of industry payments and prescription of opioid products2022

    • Author(s)
      Inoue, K., Goto, A., Kondo, N. and Shinozaki, T.
    • Journal Title

      BMC Medical Research Methodology

      Volume: 22 Issue: 1

    • DOI

      10.1186/s12874-022-01563-3

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 因果推論・機械学習の疫学応用2022

    • Author(s)
      井上 浩輔,篠崎 智大
    • Journal Title

      医学のあゆみ

      Volume: 283巻8号 Pages: 815-822

    • Related Report
      2022 Research-status Report
  • [Journal Article] Effectiveness of remdesivir in hospitalized nonsevere patients with COVID-19 in Japan: A large observational study using the COVID-19 Registry Japan.2022

    • Author(s)
      Tsuzuki S, Hayakawa K, Uemura Y, Shinozaki T, Matsunaga N, Terada M, Suzuki S, Asai Y, Kitajima K, Saito S, Yamada G, Shibata T, Kondo M, Izumi K, Hojo M, Mizoue T, Yokota K,?Nakamura-Uchiyama F, Saito F, Sugiura W, Ohmagari N.
    • Journal Title

      Int J Infect Dis.

      Volume: 118 Pages: 119-125

    • DOI

      10.1016/j.ijid.2022.02.039

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness of Favipiravir on Nonsevere, Early-Stage COVID-19 in Japan: A Large Observational Study Using the COVID-19 Registry Japan.2022

    • Author(s)
      Tsuzuki S, Hayakawa K, Doi Y, Shinozaki T, Uemura Y, Matsunaga N, Terada M, Suzuki S, Asai Y, Yamada G, Saito S, Shibata T, Kondo M, Izumi K, Hojo M, Mizoue T, Yokota K, Nakamura-Uchiyama F, Saito F, Sugiura W, Ohmagari N.
    • Journal Title

      Infect Dis Ther.

      Volume: - Issue: 3 Pages: 1-13

    • DOI

      10.1007/s40121-022-00617-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 臨床研究におけるエスティマンド2022

    • Author(s)
      篠崎 智大,菅波 秀規
    • Journal Title

      医学のあゆみ

      Volume: 280巻5号 Pages: 473-479

    • Related Report
      2021 Research-status Report
  • [Journal Article] 治療経過に応じて決まる治療方針の因果効果2022

    • Author(s)
      篠崎 智大
    • Journal Title

      医学のあゆみ

      Volume: 280巻5号 Pages: 508-516

    • Related Report
      2021 Research-status Report
  • [Journal Article] Comment on “Biostatistical Considerations When Using RWD and RWE in Clinical Studies for Regulatory Purposes: A Landscape Assessment”2021

    • Author(s)
      Uemura Yukari、Shinozaki Tomohiro、Nomura Shogo、Shibata Taro
    • Journal Title

      Statistics in Biopharmaceutical Research

      Volume: in press Issue: 1 Pages: 20-22

    • DOI

      10.1080/19466315.2021.1974537

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sensitivity analysis for subsequent treatments in confirmatory oncology clinical trials: A two‐stage stochastic dynamic treatment regime approach2021

    • Author(s)
      Hagiwara Yasuhiro、Shinozaki Tomohiro、Mukai Hirofumi、Matsuyama Yutaka
    • Journal Title

      Biometrics

      Volume: 77 Issue: 2 Pages: 702-714

    • DOI

      10.1111/biom.13296

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mediational g-formula for time-varying treatment and repeated-measured multiple mediators: Application to atorvastatin’s effect on cardiovascular disease via cholesterol lowering and anti-inflammatory actions in elderly type 2 diabetics2021

    • Author(s)
      Yamamuro Shintaro、Shinozaki Tomohiro、Iimuro Satoshi、Matsuyama Yutaka
    • Journal Title

      Statistical Methods in Medical Research

      Volume: 30 Issue: 8 Pages: 1782-1799

    • DOI

      10.1177/09622802211025988

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Population attributable fraction in textbooks: Time to revise2021

    • Author(s)
      Khosravi Ahmad、Nazemipour Maryam、Shinozaki Tomohiro、Mansournia Mohammad Ali
    • Journal Title

      Global Epidemiology

      Volume: 3 Pages: 100062-100062

    • DOI

      10.1016/j.gloepi.2021.100062

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Understanding Marginal Structural Models for Time-Varying Exposures: Pitfalls and Tips2020

    • Author(s)
      Shinozaki Tomohiro、Suzuki Etsuji
    • Journal Title

      Journal of Epidemiology

      Volume: 30 Issue: 9 Pages: 377-389

    • DOI

      10.2188/jea.JE20200226

    • NAID

      130007896982

    • ISSN
      0917-5040, 1349-9092
    • Year and Date
      2020-09-05
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Causal Diagrams: Pitfalls and Tips2020

    • Author(s)
      Suzuki E, Shinozaki T, Yamamoto E
    • Journal Title

      Journal of Epidemiology

      Volume: 30 Issue: 4 Pages: 153-162

    • DOI

      10.2188/jea.JE20190192

    • NAID

      130007828841

    • ISSN
      0917-5040, 1349-9092
    • Year and Date
      2020-04-05
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] G‐estimation of structural nested restricted mean time lost models to estimate effects of time‐varying treatments on a failure time outcome2020

    • Author(s)
      Hagiwara Yasuhiro、Shinozaki Tomohiro、Matsuyama Yutaka
    • Journal Title

      Biometrics

      Volume: 76 Issue: 3 Pages: 799-810

    • DOI

      10.1111/biom.13200

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [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

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 二者関係データにおける相互影響関係を調べるための統計解析2020

    • Author(s)
      篠崎智大
    • Journal Title

      保健の科学

      Volume: 62 Pages: 529-534

    • Related Report
      2020 Research-status Report
  • [Presentation] 標的試験エミュレーション:RCTデザインをベンチマークとした観察研究データ解析2024

    • Author(s)
      篠崎 智大
    • Organizer
      第34回日本疫学会学術総会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Recent development in causal mediation analysis2023

    • Author(s)
      篠崎 智大
    • Organizer
      The Asia Cohort Consortium 2023 General Membership Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Transporting causal effects estimated from observational studies with preexisting exposures2023

    • Author(s)
      篠崎 智大
    • Organizer
      The Society for Epidemiologic Research 2023 Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 治療への反応にもとづく治療方針による介入の個別化2023

    • Author(s)
      篠崎 智大
    • Organizer
      2023年度統計関連学会連合大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 時間依存性交絡とその調整2023

    • Author(s)
      篠崎 智大
    • Organizer
      第28回日本薬剤疫学会学術総会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 標的学習の考え方と実装:因果推論×機械学習という異なる手法による観察研究データ解析2023

    • Author(s)
      篠崎 智大
    • Organizer
      ヘルスデータサイエンス学会第2回学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 欠測を伴う時間依存性交絡の存在下における構造ネスト累積生存時間モデルの二重ロバストg推定2023

    • Author(s)
      竹内 由則,小向 翔,後藤 温,篠崎 智大
    • Organizer
      2023年度統計関連学会連合大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 標的学習の基礎2022

    • Author(s)
      篠崎 智大
    • Organizer
      2022年度統計関連学会連合大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 因果媒介分析2022

    • Author(s)
      篠崎 智大
    • Organizer
      ヘルスデータサイエンス学会第1回学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] いま改めて「欠測データ」の解析について考える:パート1.欠測データの扱いに応じた様々なバイアス2022

    • Author(s)
      篠崎 智大
    • Organizer
      第32回日本疫学会学術総会 プレセミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] One-step approximation of covariate balancing propensity score using generalized linear models2022

    • Author(s)
      Tomohiro Shinozaki
    • Organizer
      The 11th Conference of the Asian Regional Section of the International Association for Statistical Computing (IASC-ARS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Classifying structures of possible biases in naive analyses with missing data2022

    • Author(s)
      Tomohiro Shinozaki
    • Organizer
      2022 International Epidemiological Association-Western Pacific Region (IEA-WP) & Japan Epidemiological Association (JEA) Joint Seminar
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 反事実因果モデルと RWEとの架橋2021

    • Author(s)
      篠崎 智大
    • Organizer
      2021年度統計関連学会連合大会 企画セッション:日本計量生物学会シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Bias amplification in the g-computation algorithm for time-varying treatments2021

    • Author(s)
      Kosuke Inoue, Atsushi Goto, Naoki Kondo, and Tomohiro Shinozaki
    • Organizer
      54th Annual Meeting of the Society for Epidemiologic Research
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Two-stage sampling framework for combining case-cohort studies from partially overlapped cohorts with different timings of biomarker measurement2021

    • Author(s)
      Aya Kuchiba、Tomohiro Shinozaki
    • Organizer
      ENAR 2021 Spring Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 因果媒介分析を極める! 直接効果・間接効果の推定:時間依存性交絡がある場合2021

    • Author(s)
      篠崎智大
    • Organizer
      第31回日本疫学会学術総会 プレセミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Improving g-estimation of structural nested mean models in randomized trials with partial compliance using auxiliary covariates: application to survival data for metastatic breast cancer2020

    • Author(s)
      Tomohiro Shinozaki
    • Organizer
      The XXXth International Biometric Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The meaning of arrows: reflections on the assumption of faithfulness in causal directed acyclic graphs2020

    • Author(s)
      Etsuji Suzuki、Tomohiro Shinozaki、Eiji Yamamoto
    • Organizer
      53rd Annual Meeting of the Society for Epidemiologic Research
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 傾向スコア解析のmodern view2020

    • Author(s)
      篠崎智大
    • Organizer
      第14回Biostatistics Network
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] ペアマッチデータおよび非マッチデータにおけるハザード比と生存時間のP(X < Y)2020

    • Author(s)
      篠崎智大
    • Organizer
      2020年度統計関連学会連合大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 臨床試験と因果モデル2020

    • Author(s)
      篠崎智大
    • Organizer
      第5回統計・機械学習若手シンポジウム
    • Related Report
      2020 Research-status Report
    • Invited
  • [Book] 生物統計学の道標2023

    • Author(s)
      坂巻顕太郎、篠崎智大(監修)
    • Total Pages
      243
    • Publisher
      厚生労働統計協会
    • ISBN
      9784875118947
    • Related Report
      2023 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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