Koji Oba

Recommendations for generating real-world evidence with regulatory-grade relevance and reliability.

Journal: International journal of clinical oncology

Published: June 09, 2026

Cost-effectiveness analysis of transurethral resection of bladder tumor with photodynamic diagnosis with 5-aminolevulinic acid hydrochloride for non-muscle invasive bladder cancer.

Journal: Photodiagnosis and photodynamic therapy

Published: March 02, 2026

A Nomogram Predicts the Need for Internal Iliac Vein Dissection During Renal Transplantation: A Multicenter Collaborative Study.

Journal: Transplantation proceedings

Published: January 20, 2026

Efficacy of Adjuvant Chemotherapy for T1-2 Stage III Colorectal Cancer.

Journal: Cancers

Published: November 03, 2025

Efficacy and safety of oral 5-FU-based adjuvant chemotherapy for geriatric patients with colorectal cancer: Integrated analysis of seven clinical trials conducted at the Japanese Foundation for Multidisciplinary Treatment of Cancer.

Journal: Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland

Published: September 05, 2025

Blinded sample size recalculation in randomized controlled trials with analysis of covariance.

Journal: Biometrics

Published: September 03, 2025

Impact of prophylactic antibiotic duration on surgical site infection rate in neonatal surgery: a multicenter retrospective observational study.

Journal: Journal of perinatology : official journal of the California Perinatal Association

Published: June 20, 2025

Benefit-risk balance of S-1 versus UFT as adjuvant chemotherapy for stage II/III rectal cancer (JFMC35-C1: ACTS-RC).

Journal: The oncologist

Published: May 16, 2025

Preclinical Evaluation of an Interactive Image Search System of Oral Pathology.

Journal: Journal of dental research

Published: May 05, 2025

Adverse events of postoperative adjuvant chemotherapy predict survival outcomes in locally advanced colorectal cancer: a pooled analysis of Japanese clinical trials.

Journal: British journal of cancer

Published: April 07, 2025

Preoperative chemoradiotherapy with the TEGAFIRI regimen achieves significant local control in locally advanced rectal cancer.

Journal: International journal of colorectal disease

Published: March 19, 2025

Investigation of the Effect of Empagliflozin on Cardiac Sympathetic and Parasympathetic Nerve Activity Analyzed From Heart Rate Variability Frequency in Japanese Patients With Type 2 Diabetes　- Results From the EMPYREAN Study.

Journal: Circulation journal : official journal of the Japanese Circulation Society

Published: March 12, 2025

Recommendations for generating real-world evidence with regulatory-grade relevance and reliability.

Recommendations for generating real-world evidence with regulatory-grade relevance and reliability.

Cost-effectiveness analysis of transurethral resection of bladder tumor with photodynamic diagnosis with 5-aminolevulinic acid hydrochloride for non-muscle invasive bladder cancer.

Cost-effectiveness analysis of transurethral resection of bladder tumor with photodynamic diagnosis with 5-aminolevulinic acid hydrochloride for non-muscle invasive bladder cancer.

A Nomogram Predicts the Need for Internal Iliac Vein Dissection During Renal Transplantation: A Multicenter Collaborative Study.

A Nomogram Predicts the Need for Internal Iliac Vein Dissection During Renal Transplantation: A Multicenter Collaborative Study.

Efficacy of Adjuvant Chemotherapy for T1-2 Stage III Colorectal Cancer.

Efficacy of Adjuvant Chemotherapy for T1-2 Stage III Colorectal Cancer.

Efficacy and safety of oral 5-FU-based adjuvant chemotherapy for geriatric patients with colorectal cancer: Integrated analysis of seven clinical trials conducted at the Japanese Foundation for Multidisciplinary Treatment of Cancer.

Efficacy and safety of oral 5-FU-based adjuvant chemotherapy for geriatric patients with colorectal cancer: Integrated analysis of seven clinical trials conducted at the Japanese Foundation for Multidisciplinary Treatment of Cancer.

Blinded sample size recalculation in randomized controlled trials with analysis of covariance.

Blinded sample size recalculation in randomized controlled trials with analysis of covariance.

Impact of prophylactic antibiotic duration on surgical site infection rate in neonatal surgery: a multicenter retrospective observational study.

Impact of prophylactic antibiotic duration on surgical site infection rate in neonatal surgery: a multicenter retrospective observational study.

Benefit-risk balance of S-1 versus UFT as adjuvant chemotherapy for stage II/III rectal cancer (JFMC35-C1: ACTS-RC).

Benefit-risk balance of S-1 versus UFT as adjuvant chemotherapy for stage II/III rectal cancer (JFMC35-C1: ACTS-RC).

Preclinical Evaluation of an Interactive Image Search System of Oral Pathology.

Preclinical Evaluation of an Interactive Image Search System of Oral Pathology.

Adverse events of postoperative adjuvant chemotherapy predict survival outcomes in locally advanced colorectal cancer: a pooled analysis of Japanese clinical trials.

Adverse events of postoperative adjuvant chemotherapy predict survival outcomes in locally advanced colorectal cancer: a pooled analysis of Japanese clinical trials.

Preoperative chemoradiotherapy with the TEGAFIRI regimen achieves significant local control in locally advanced rectal cancer.

Preoperative chemoradiotherapy with the TEGAFIRI regimen achieves significant local control in locally advanced rectal cancer.

Investigation of the Effect of Empagliflozin on Cardiac Sympathetic and Parasympathetic Nerve Activity Analyzed From Heart Rate Variability Frequency in Japanese Patients With Type 2 Diabetes - Results From the EMPYREAN Study.

Investigation of the Effect of Empagliflozin on Cardiac Sympathetic and Parasympathetic Nerve Activity Analyzed From Heart Rate Variability Frequency in Japanese Patients With Type 2 Diabetes - Results From the EMPYREAN Study.

Investigation of the Effect of Empagliflozin on Cardiac Sympathetic and Parasympathetic Nerve Activity Analyzed From Heart Rate Variability Frequency in Japanese Patients With Type 2 Diabetes　- Results From the EMPYREAN Study.

Investigation of the Effect of Empagliflozin on Cardiac Sympathetic and Parasympathetic Nerve Activity Analyzed From Heart Rate Variability Frequency in Japanese Patients With Type 2 Diabetes　- Results From the EMPYREAN Study.