All Stories

  1. Energy landscape analysis and time-series clustering for rheumatoid arthritis: KURAMA cohort study

    Article • PLoS ONE, May 2024, PLOS

    Dr. Keiichi Yamamoto

  2. A Pragmatic Method to Integrate Data From Preexisting Cohort Studies Using the Clinical Data Interchange Standards Consortium (CDISC) Study Data Tabulation Model: Case Study

    Article • JMIR Medical Informatics, December 2023, JMIR Publications Inc.

    Dr. Keiichi Yamamoto

  3. A Pragmatic Method to Integrate Data from Pre-existing Cohort Studies using the Clinical Data Interchange Standards Consortium (CDISC) Study Data Tabulation Model (SDTM): Practical use of REDCap2SDTM (Preprint)

    Article • March 2023, JMIR Publications Inc.

    Dr. Keiichi Yamamoto

  4. Factors affecting drug retention of Janus kinase inhibitors in patients with rheumatoid arthritis: the ANSWER cohort study

    Article • Scientific Reports, January 2022, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  5. The Association of Disease Activity and Estimated GFR in Patients With Rheumatoid Arthritis: Findings From the ANSWER Study

    Article • American Journal of Kidney Diseases, November 2021, Elsevier

    Dr. Keiichi Yamamoto

  6. Favorable clinical response and drug retention of anti-IL-6 receptor inhibitor in rheumatoid arthritis with high CRP levels: the ANSWER cohort study

    Article • Scandinavian Journal of Rheumatology, September 2021, Taylor & Francis

    Dr. Keiichi Yamamoto

  7. Annual dialysis data report of the 2018 JSDT Renal Data Registry: dementia, performance status, and exercise habits

    Article • Renal Replacement Therapy, July 2021, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  8. 2018 annual dialysis data report of the JSDT Renal Data Registry: patients with hepatitis

    Article • Renal Replacement Therapy, May 2021, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  9. Drug retention of sarilumab, baricitinib, and tofacitinib in patients with rheumatoid arthritis: the ANSWER cohort study

    Article • Clinical Rheumatology, January 2021, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  10. Causal relations of health indices inferred statistically using the DirectLiNGAM algorithm from big data of Osaka prefecture health checkups

    Article • PLoS ONE, December 2020, PLOS

    Dr. Keiichi Yamamoto

  11. Annual dialysis data report 2018, JSDT Renal Data Registry: dialysis fluid quality, hemodialysis and hemodiafiltration, peritoneal dialysis, and diabetes

    Article • Renal Replacement Therapy, November 2020, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  12. Annual dialysis data report for 2018, JSDT Renal Data Registry: survey methods, facility data, incidence, prevalence, and mortality

    Article • Renal Replacement Therapy, September 2020, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  13. Health Observation App for COVID-19 Symptom Tracking Integrated With Personal Health Records: Proof of Concept and Practical Use Study

    Article • JMIR mhealth and uhealth, July 2020, JMIR Publications Inc.

    Dr. Keiichi Yamamoto

  14. Drug retention of 7 biologics and tofacitinib in biologics-naïve and biologics-switched patients with rheumatoid arthritis: the ANSWER cohort study

    Article • June 2020, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  15. Health Observation App for COVID-19 Symptom Tracking Integrated With Personal Health Records: Proof of Concept and Practical Use Study (Preprint)

    Article • May 2020, JMIR Publications Inc.

    Dr. Keiichi Yamamoto

  16. Drug retention of secondary biologics or JAK inhibitors after tocilizumab or abatacept failure as first biologics in patients with rheumatoid arthritis -the ANSWER cohort study-

    Article • Clinical Rheumatology, March 2020, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  17. Annual dialysis data report 2017, JSDT Renal Data Registry

    Article • Renal Replacement Therapy, December 2019, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  18. The Accuracy of Diagnostic Codes in Electronic Medical Records in Japan

    Article • Journal of Medical Systems, September 2019, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  19. Drug tolerability and reasons for discontinuation of seven biologics in elderly patients with rheumatoid arthritis -The ANSWER cohort study-

    Article • PLoS ONE, May 2019, PLOS

    Dr. Keiichi Yamamoto

  20. Correction to: Drug tolerability and reasons for discontinuation of seven biologics in 4466 treatment courses of rheumatoid arthritis—the ANSWER cohort study

    Article • May 2019, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  21. Drug tolerability and reasons for discontinuation of seven biologics in 4466 treatment courses of rheumatoid arthritis—the ANSWER cohort study

    Article • April 2019, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  22. Annual Dialysis Data Report 2016, JSDT Renal Data Registry

    Article • Renal Replacement Therapy, November 2018, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  23. Drug retention and discontinuation reasons between seven biologics in patients with rheumatoid arthritis -The ANSWER cohort study-

    Article • PLoS ONE, March 2018, PLOS

    Dr. Keiichi Yamamoto

  24. Validation of an algorithm that determines stroke diagnostic code accuracy in a Japanese hospital-based cancer registry using electronic medical records

    Article • BMC Medical Informatics and Decision Making, December 2017, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  25. Epidemiological and outcome data in Japanese patients with deep vein thrombosis with and without malignancy

    Article • Heart and Vessels, July 2017, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  26. A pragmatic method for transforming clinical research data from the research electronic data capture “REDCap” to Clinical Data Interchange Standards Consortium (CDISC) Study Data Tabulation Model (SDTM): Development and evaluation of REDCap2SDTM

    Article • Journal of Biomedical Informatics, June 2017, Elsevier

    Dr. Keiichi Yamamoto

  27. Vitamin D Receptor Activator Use and Cause-specific Death among dialysis Patients: a Nationwide Cohort Study using Coarsened Exact Matching

    Article • Scientific Reports, January 2017, Nature

    Dr. Yoshitsugu Obi, Dr. Keiichi Yamamoto

  28. Developing a Practical Method for Validation of Computerized Systems Integrated With Smart and/or Wearable Devices for Regulatory Compliance of Clinical Trials

    Article • Therapeutic Innovation & Regulatory Science, January 2017, SAGE Publications

    Ms. Yumi Wakabayashi, Dr. Keiichi Yamamoto

  29. The association between serious infection and disease outcome in patients with rheumatoid arthritis

    Article • Clinical Rheumatology, December 2015, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  30. Periodontitis and Porphyromonas gingivalis in Preclinical Stage of Arthritis Patients

    Article • PLoS ONE, April 2015, PLOS

    Dr. Keiichi Yamamoto

  31. Increase of Hemoglobin Levels by Anti-IL-6 Receptor Antibody (Tocilizumab) in Rheumatoid Arthritis

    Article • PLoS ONE, May 2014, PLOS

    Dr. Keiichi Yamamoto

  32. The increase in prescriptions of bisphosphonates and the incidence proportion of osteonecrosis of the jaw after risk communication activities in Japan: a hospital‐based cohort study

    Article • Pharmacoepidemiology and Drug Safety, January 2014, Wiley

    Dr. Keiichi Yamamoto

  33. Risk Factors and Indices of Osteomyelitis of the Jaw in Osteoporosis Patients: Results from a Hospital-Based Cohort Study in Japan

    Article • PLoS ONE, November 2013, PLOS

    Dr. Keiichi Yamamoto

  34. A single-center analysis of the survival benefits of adjuvant gemcitabine chemotherapy for biliary tract cancer

    Article • International Journal of Clinical Oncology, June 2013, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  35. Three Groups in the 28 Joints for Rheumatoid Arthritis Synovitis – Analysis Using More than 17,000 Assessments in the KURAMA Database

    Article • PLoS ONE, March 2013, PLOS

    Dr. Keiichi Yamamoto

  36. The correlation between the number of eligible patients in routine clinical practice and the low recruitment level in clinical trials: a retrospective study using electronic medical records

    Article • Trials, January 2013, Springer Science + Business Media

    Dr. Keiichi Yamamoto

  37. Risk of osteomyelitis of the jaw induced by oral bisphosphonates in patients taking medications for osteoporosis: A hospital-based cohort study in Japan

    Article • Bone, November 2012, Elsevier

    Dr. Keiichi Yamamoto

  38. An eClinical trial system for cancer that integrates with clinical pathways and electronic medical records

    Article • Clinical Trials, May 2012, SAGE Publications

    Dr. Keiichi Yamamoto

  39. A pragmatic method for electronic medical record-based observational studies: developing an electronic medical records retrieval system for clinical research

    Article • BMJ Open, January 2012, BMJ

    Dr. Keiichi Yamamoto

  40. Serum IgG levels demonstrate seasonal change in connective tissue diseases: a large-scale, 4-year analysis in Japanese

    Article • Modern Rheumatology, October 2011, Oxford University Press (OUP)

    Dr. Keiichi Yamamoto

  41. A data-capture system for post-marketing surveillance of drugs that integrates with hospital electronic health records

    Article • Open Access Journal of Clinical Trials, April 2011, Taylor & Francis

    Dr. Keiichi Yamamoto

  42. A Data Capture System for Outcomes Studies that Integrates with Electronic Health Records: Development and Potential Uses

    Article • Journal of Medical Systems, May 2008, Springer Science + Business Media

    Dr. Keiichi Yamamoto