Kouji Yamamoto

Profile Information

Affiliation: Professor, Department of Biostatistics, School of Medicine, Yokohama City University

Degree: 博士（理学）(東京理科大学)

J-GLOBAL ID: 201801006657501570
researchmap Member ID: 7000022993

臨床研究などに生物統計家として参画する一方で、研究デザインや解析手法などで直面する実課題について、その問題解決をはかるべく研究を行っている。とくにカテゴリカルデータを扱う問題に関心がある。

Research Interests

Research Areas

Research History

Aug, 2023 - Present

Department of Biostatistics, School of Medicine, Yokohama City University
Oct, 2018 - Jul, 2023

准教授, 横浜市立大学医学部
Jan, 2017 - Sep, 2018

Graduate School of Medicine, Osaka City University
Jan, 2015 - Dec, 2016

Graduate School of Medicine, Osaka University
Jan, 2011 - Dec, 2014

Faculty of Medicine, Osaka University
Apr, 2009 - Dec, 2010

Faculty of Science and Technology, Tokyo University of Science

Education

Mar, 2009

Tokyo University of Science

Awards

Papers

146

Chronic Effects of Adaptive Servo-Ventilation Therapy on Mortality and the Urgent Rehospitalization Rate in Patients Experiencing Recurrent Admissions for Heart Failure - A Multicenter Prospective Observational Study (SAVIOR-L).

Yoshihiro Fukumoto, Takeshi Tada, Hideaki Suzuki, Yuji Nishimoto, Kenji Moriuchi, Takuo Arikawa, Hitoshi Adachi, Shin-Ichi Momomura, Yoshihiko Seino, Yoshio Yasumura …

Circulation journal : official journal of the Japanese Circulation Society, Apr 2, 2024
Investigation of biomarkers to predict outcomes in allogeneic hematopoietic stem cell transplantation.

Takayoshi Tachibana, Takuya Miyazaki, Ayako Matsumura, Maki Hagihara, Masatsugu Tanaka, Satoshi Koyama, Eriko Ogusa, Jun Aoki, Yuki Nakajima, Hiroyuki Takahashi …

Cytotherapy, Mar 30, 2024
Baseline ctDNA gene alterations as a biomarker of survival after panitumumab and chemotherapy in metastatic colorectal cancer.

Kohei Shitara, Kei Muro, Jun Watanabe, Kentaro Yamazaki, Hisatsugu Ohori, Manabu Shiozawa, Atsuo Takashima, Mitsuru Yokota, Akitaka Makiyama, Naoya Akazawa …

Nature medicine, 30(3) 730-739, Mar, 2024
A combined superiority and non-inferiority procedure for comparing predictive values of two diagnostic tests

Kanae Takahashi, Kouji Yamamoto, Ayumi Shintani

Journal of Applied Statistics, 2024
Clinical significance of total nucleated cell count in bone marrow of patients with acute lymphoblastic leukemia who underwent allogeneic hematopoietic stem cell transplantation.

Jun Nukui, Takayoshi Tachibana, Takuya Miyazaki, Masatsugu Tanaka, Kenji Matsumoto, Yoshimi Ishii, Ayumi Numata, Yuki Nakajima, Ayako Matsumura, Taisei Suzuki …

International journal of hematology, 119(1) 62-70, Jan, 2024
Prevention of symptomatic pulmonary embolism for gynecologic malignancies with preoperative asymptomatic venous thromboembolism: GOTIC-VTE trial.

Yoshifumi Takahashi, Hiroyuki Fujiwara, Kouji Yamamoto, Masashi Takano, Morikazu Miyamoto, Kosei Hasegawa, Maiko Miwa, Toyomi Satoh, Hiroya Itagaki, Takashi Hirakawa …

Journal of gynecologic oncology, Jan 1, 2024
Clinical outcomes of intensive versus less intensive first-line chemotherapy for metastatic colorectal cancer.

Kentaro Yamazaki, Satoshi Yuki, Eiji Oki, Fumikazu Sano, Misako Makishima, Kenichi Aoki, Tetsutaro Hamano, Kouji Yamamoto

Future oncology (London, England), 19(39) 2569-2583, Dec, 2023
A Learning Program for Treatment Recommendations by Molecular Tumor Boards and Artificial Intelligence.

Kuniko Sunami, Yoichi Naito, Yusuke Saigusa, Toraji Amano, Daisuke Ennishi, Mitsuho Imai, Hidenori Kage, Masashi Kanai, Hirotsugu Kenmotsu, Keigo Komine …

JAMA oncology, 10(1) 95-102, Nov 30, 2023
Clinical Utility of Computed Tomography-Derived Myocardial Extracellular Volume Fraction: A Systematic Review and Meta-Analysis.

Shingo Kato, Yuka Misumi, Nobuyuki Horita, Kouji Yamamoto, Daisuke Utsunomiya

JACC. Cardiovascular imaging, Nov 8, 2023
Mid-term outcomes of surgical aortic valve replacement using a mosaic porcine bioprosthesis with concomitant mitral valve repair.

Haruhiko Sugimori, Tatsuya Nakao, Yukikatsu Okada, Yutaka Okita, Hitoshi Yaku, Junjiro Kobayashi, Hideyuki Uesugi, Shuichiro Takanashi, Toshiaki Ito, Tadaaki Koyama …

Heart and vessels, 39(3) 252-265, Oct 16, 2023
Hypothesis testing procedure for binary and multi-class F1 -scores in the paired design.

Kanae Takahashi, Kouji Yamamoto, Aya Kuchiba, Ayumi Shintani, Tatsuki Koyama

Statistics in medicine, 42(23) 4177-4192, Oct 15, 2023
Randomized phase II trial of chemoradiotherapy with S-1 versus combination chemotherapy with gemcitabine and S-1 as neoadjuvant treatment for resectable pancreatic cancer (JASPAC 04).

Teiichi Sugiura, Hirochika Toyama, Akira Fukutomi, Hirofumi Asakura, Yuriko Takeda, Kouji Yamamoto, Satoshi Hirano, Sohei Satoi, Ippei Matsumoto, Shinichiro Takahashi …

Journal of hepato-biliary-pancreatic sciences, 30(11) 1249-1260, Sep 25, 2023
Neoadjuvant chemotherapy followed by interval debulking surgery for advanced epithelial ovarian cancer: GOTIC-019 study.

Shoji Nagao, Jun Tamura, Takashi Shibutani, Maiko Miwa, Tomoyasu Kato, Ayumi Shikama, Yuji Takei, Natsuko Kamiya, Naoki Inoue, Kazuto Nakamura …

International journal of clinical oncology, 28(6) 804-815, Jun, 2023
Intraperitoneal Carboplatin for Ovarian Cancer - A Phase 2/3 Trial.

Shoji Nagao, Keiichi Fujiwara, Kouji Yamamoto, Hiroshi Tanabe, Aikou Okamoto, Kazuhiro Takehara, Motoaki Saito, Hiroyuki Fujiwara, David S P Tan, Satoshi Yamaguchi …

NEJM evidence, 2(5) EVIDoa2200225, May, 2023
Panitumumab vs Bevacizumab Added to Standard First-line Chemotherapy and Overall Survival Among Patients With RAS Wild-type, Left-Sided Metastatic Colorectal Cancer: A Randomized Clinical Trial.

Jun Watanabe, Kei Muro, Kohei Shitara, Kentaro Yamazaki, Manabu Shiozawa, Hisatsugu Ohori, Atsuo Takashima, Mitsuru Yokota, Akitaka Makiyama, Naoya Akazawa …

JAMA, 329(15) 1271-1282, Apr 18, 2023
Pilot study for the treatment of cutaneous neurofibromas in neurofibromatosis type 1 patients using topical sirolimus gel.

Mari Wataya-Kaneda, Yoshiyuki Watanabe, Ayumi Nakamura, Kouji Yamamoto, Kiyoshi Okada, Shinichiro Maeda, Keisuke Nimura, Kotaro Saga, Ichiro Katayama

Journal of the American Academy of Dermatology, 88(4) 877-880, Apr, 2023
Predictive value of the Thompson score for short-term adverse outcomes in neonatal encephalopathy.

Hirosato Aoki, Jun Shibasaki, Kennosuke Tsuda, Kouji Yamamoto, Akihito Takeuchi, Yuichiro Sugiyama, Tetsuya Isayama, Takeo Mukai, Tomoaki Ioroi, Nanae Yutaka …

Pediatric research, 93(4) 1057-1063, Mar, 2023
Protocol for a confirmatory trial of the effectiveness and safety of palliative arterial embolization for painful bone metastases.

Sadamoto Zenda, Yasunori Arai, Shunsuke Sugawara, Yoshitaka Inaba, Kazuki Hashimoto, Kouji Yamamoto, Yusuke Saigusa, Takashi Kawaguchi, Sanae Shimada, Marie Yokoyama …

BMC cancer, 23(1) 109-109, Jan 31, 2023
ENDOSCOPIC ULTRASOUND VERSUS MAGNETIC RESONANCE CHOLANGIOPANCREATOGRAPHY FOR THE DIAGNOSIS OF COMPUTED TOMOGRAPHY-NEGATIVE COMMON BILE DUCT STONE: PROSPECTIVE RANDOMIZED CONTROLLED TRIAL

Masato Suzuki, Yusuke Sekino, Kunihiro Hosono, Kouji Yamamoto, Kenichi Kawana, Hajime Nagase, Kensuke Kubota, Atsushi Nakajima

Gastroenterological Endoscopy, 65(5) 486-494, 2023
Creation of an Integrated Clinical Trial Database and Data Sharing for Conducting New Research by the Japan Lung Cancer Society

Yuichi Ozawa, Nobuyuki Yamamoto, Kouji Yamamoto, Kentaro Ito, Hirotsugu Kenmotsu, Hidetoshi Hayashi, Takehito Shukuya, Daichi Fujimoto, Shunichi Sugawara, Seiji Niho …

Japanese Journal of Lung Cancer, 63(3) 161-181, 2023

Misc.

下甲状腺動脈血流は橋本病合併妊婦における妊娠期LT4追加量を予測する

山崎彰代, 藏城雅文, 長崎俊樹, 都井律和, 林礼行, 宮岡大知, 永田友貴, 山田真介, 今西康雄, 絵本正憲 …

日本内分泌学会雑誌, 94(1) 312-312, Apr, 2018
橋本病合併妊婦において下甲状腺動脈血流は妊娠期LT4追加量を予測する

藏城雅文, 山崎彰代, 長崎俊樹, 永田友貴, 山田真介, 今西康雄, 絵本正憲, 高橋佳苗, 山本紘司, 稲葉雅章

日本内科学会雑誌, 107(Suppl.) 205-205, Feb, 2018
Decomposition of Measure for Marginal Homogeneity in Square Contingency Tables with Ordered Categories

Kouji Yamamoto, Sadao Tomizawa

Austrian Journal of Statistics, 36(2), Apr 3, 2016
Simplified Cardiopulmonary Resuscitation Training Program for the Non-Medical Staffs Working at a University Hospital Improved the Quality of Chest Compression, but Maintenance of the Skill Required Repeated Attendance

Tomoya Hirose, Taku Iwami, Hiroshi Ogura, Hisatake Matsumoto, Yasuaki Kido, Keiko Seo, Kouji Yamamoto, Toshiaki Mano, Yuji Fujino, Takeshi Shimazu

CIRCULATION, 128(22), Nov, 2013
EXPRESSION OF NEUTROPHIL EXTRACELLULAR TRAPS AND CITRULLINATION OF HISTONE H3 IN THE BLOODSTREAM OF CRITICALLY ILL PATIENTS

Tomoya Hirose, Shigeto Hamaguchi, Naoya Matsumoto, Taro Irisawa, Masafumi Seki, Osamu Tasaki, Hideo Hosotsubo, Kouji Yamamoto, Kazunori Tomono, Takeshi Shimazu

CRITICAL CARE MEDICINE, 40(12) U100-U100, Dec, 2012
Decomposition of Symmetry Using Palindromic Symmetry Model in a Two-Way Classiﬁcation

Kouji Tahata, Kouji Yamamoto, Sadao Tomizawa

Journal of Statistics Applications & Probability, 1(3) 201-204, Nov 1, 2012
Some Symmetry Models for the Analysis of Collapsed Square Contingency Tables with Ordered Categories

Kouji Yamamoto, Kouji Tahata, Sadao Tomizawa

Calcutta Statistical Association Bulletin, 64(1-2) 21-36, Mar, 2012
GENERALIZED MEASURES OF DEPARTURE FROM SYMMETRY FOR SQUARE CONTINGENCY TABLES

TAHATA Kouji, YAMAMOTO Kouji, YAMADA Akifumi, TOMIZAWA Sadao

36(1) 75-86, Jan 1, 2009
A MEASURE OF ASYMMETRY FOR MULTI-WAY CONTINGENCY TABLES WITH ORDERED CATEGORIES

Yamamoto Kouji, Tomizawa Sadao

Journal of the Japanese Society of Computational Statistics, 20(1) 39-64, 2007

Professional Memberships

Research Projects

カテゴリ変数を伴う臨床研究における新たな解析法およびデザインの開発

科学研究費助成事業基盤研究(C), 基盤研究(C), 日本学術振興会, Apr, 2021 - Mar, 2024

山本紘司
小標本臨床試験におけるカテゴリカル変数に対する正確検定の開発

科学研究費助成事業基盤研究(C), 基盤研究(C), 日本学術振興会, Apr, 2018 - Mar, 2023

山本紘司
Transition of functional decline and long-term and health care service utilization until the death on ambulatory frail older adults

Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory), Grant-in-Aid for Challenging Research (Exploratory), Japan Society for the Promotion of Science, Jun, 2017 - Mar, 2020

Kono Ayumi
臨床研究におけるカテゴリカルデータ解析に関する研究

大阪市立大学若手研究者助成, Jul, 2017 - Mar, 2018

山本紘司
Development of new statistical models in categorical data analysis

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2017

Yamamoto Kouji, TOMIZAWA Sadao, SHINTANI Ayumi
Statistical Issues in Complex Medical Product Development

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2011 - 2013

TOSHIMITSU Hamasaki, SUGIMOTO Tomoyuki, UESAKA Hiroyuki, HAYASHI Kenichi, SUGITANI Toshifumi, SOZU Takashi

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Research History

Education

Awards

Papers

Misc.

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