Journal of AI, Data Science and Cyber Systems

Dr. Sang Gyu Kwak is a Professor of Medical Statistics at the School of Medicine, Daegu Catholic University, Republic of Korea. His research focuses on clinical data science, biostatistics, and applied statistical methodology in medical research. He has extensive experience in study design, statistical modeling, causal inference, and machine learning applications in healthcare data.

Dr. Kwak has collaborated on numerous interdisciplinary clinical studies and has published widely in peer-reviewed international journals. His work emphasizes robust statistical methods, reproducible research, and the integration of artificial intelligence with clinical decision-making. He actively contributes to methodological research in medical statistics and serves as a reviewer for several international journals.

• Biostatistics
• Medical Data Science
• Machine Learning in Healthcare
• Statistical Modeling
• Predictive Modeling

1. Daegu Catholic University School of Medicine Professor and Department Chair in Medical Statistics with continuous academic progression from Research Professor to Professor.
2. Ph.D. in Statistics from Kyungpook National University with specialization in Bayesian statistics, sampling, and small area estimation, and master’s research focused on Bayesian statistics and simulation.
3. Conducted international research training as Senior Researcher at Worcester Polytechnic Institute and Visiting Professor at Georgetown University Medical Center (Innovation Center for Biomedical Informatics).
4. Director of the Medical Statistics Research Center and active contributor to institutional research governance including IRB committee membership and Clinical Trial Center Executive Committee participation.
5. Steering Committee member of the Big Data & AI Center, contributing to integration of artificial intelligence and large-scale medical data analytics in clinical research.
6. Certified in multi-regional clinical trials (Harvard MRCT), SAS Base and Advanced Programming, CDISC standards (SDTM, CDASH, ADaM), and international research ethics training (WIRB, Nagasaki course).
7. Active member of major professional bodies including the American Statistical Association, Society of Clinical Data Management, Clinical Data Interchange Standards Consortium, Korean Statistical Society, and AI Healthcare Consortium Big Data Committee.
8. Serves as Statistical Editor for multiple peer-reviewed journals including Anesthesia and Pain Medicine, Journal of Lipid and Atherosclerosis, Korean Journal of Pain, and Clinical Pediatric Hematology-Oncology, and Statistical Round Board Member of Korean Journal of Anesthesiology.
9. Research focus areas include biostatistics, clinical data science, medical big data analytics, machine learning in healthcare, causal inference, statistical modeling, predictive analytics, AI in medicine, and clinical trial methodology.

1. Life Prediction and Fatigue Strength Evaluation for the Artificial Corrosion Materials. Japan Society of Mechanical Engineers. 1993.
2. Effect of the compatibilizer on the properties of polyamide in situ composites. Mechanical Behaviour of Polymeric Materials. 1998.
3. Measurement of Sizes and Velocities of Spray Droplets by Image Processing Method. Journal of ILASS-Korea. 2002.
4. The Characteristics of the Particle Position along an Optical Axis in Particle Holography. 2005.
5. Ellipsoidal droplet detection using randomized Hough transform. Atomization and Sprays. 2006.
6. Development of a holographic particle diagnostic system and its application to measurements of spray characteristics. Journal of Mechanical Science and Technology. 2007.
7. The Effect of the Mixing Vane Grid on the Local Behaviors of the CHF. 2007.
8. Estimation of the Thermal Diffusion Coefficient for the Hybrid Mixing Vane. 2007.
9. Experimental Study on the Thermal Mixing and the Critical Heat Flux in the 55 Rod Bundle with the Hybrid Mixing Vane. 2007.
10. A pilot study for Proprioception Training of stroke patients by Manipulating Visual Feedback using Virtual Reality. 2009.
11. Bayesian Test of Quasi-Independence in a Sparse Two-Way Contingency Table. Communications for Statistical Applications and Methods. 2012.
12. Bayesian estimation for finite population proportions in multinomial data. Journal of the Korean Data and Information Science Society. 2012.
13. Development of web based system for statistical analysis of clinical data. Journal of the Korean Data and Information Science Society. 2012.
14. Web-based program development for clinical data management system establishment. Journal of the Korean Data and Information Science Society. 2012.
15. Effects of Taegeuk Acupuncture on the Autonomic Nervous System by Analyzing Heart Rate Variability in 20's Soeumin. Journal of Acupuncture Research. 2013.
16. Development of integrative diagnosis methods for the jaundice through statistical analysis. Journal of the Korean Data and Information Science Society. 2013.
17. Total bilirubin level as a biomarker for dampness-heat differentiation in traditional Korean treatment for jaundice. The Journal of Korean Medicine. 2013.
18. Development of web-based system for dynamic statistical analysis of clinical data. Journal of the Korean Data and Information Science Society. 2014.
19. Validation of the seventh edition of the American Joint Committee on Cancer tumor node staging system in colorectal carcinoma. Colorectal Disease. 2011.
20. Efficacy and Safety of Geochangmanryeung-dan and Acupuncture on Patient with Spinal Stenosis Treated by Epidural Steroid Injection: Study Protocol for RCT. Korean Journal of Acupuncture. 2015.
21. Right lower limb apraxia in a patient with left supplementary motor area infarction: intactness of the corticospinal tract confirmed by transcranial magnetic stimulation. Neural Regeneration Research. 2015.
22. Study of comprehensive and integrative treatment using acupuncture for cancer pain through publication review. Journal of the Korean Data and Information Science Society. 2015.
23. The use of adenosine for temporary cardiac arrest during intraoperative cerebral aneurysmal re-bleeding. Journal of Clinical Case Reports. 2016.
24. Medical Care Utilization Behavior for Treatment of Skin Diseases: A Questionnaire-based Study. Korean Journal of Dermatology. 2016.
25. Validation of Ulcerative Colitis Endoscopic Index of Severity (UCEIS) in Korea. Gastrointestinal Endoscopy. 2016.
26. Comparison of four methods calculating ankle brachial indexes for coexistent intracranial and extracranial artery stenoses in ischemic stroke patients. Journal of the Korean Neurological Association. 2016.
27. Contest Payoffs with War. 2016.
28. Detection of thinned corticospinal tract and corticoreticular pathway in a patient with a calf circumference discrepancy. Neural Regeneration Research. 2018.
29. Comparison of three risk stratification models for non-clear cell renal cell carcinoma patients treated with temsirolimus as first-line therapy. The Korean Journal of Internal Medicine. 2018.
30. The Application of Blockchain Technology in Stroke Rehabilitation. American Journal of Physical Medicine & Rehabilitation. 2018.
31. A Study on Improvement of Initial Drop Time for Bottom-Mounted Control Rod Drive Mechanism with a Hybrid Type Electromagnet in an Upward Flow Research Reactor. 2018.
32. Safety and Efficacy of Living Donor Hepatectomy Without Systemic Heparinization: Short- and Long-Term Outcomes. Transplantation Proceedings. 2020.
33. Follow-up of at least 5 years after cervical transforaminal epidural steroid injection for control of cervical radicular pain. Pain Medicine. 2020.
34. Risk Factors for Progression to Patients with Severe Stage of COVID-19. 2020.
35. Coronavirus disease 19 positivity after negative results from six consecutive tests. Annals of Translational Medicine. 2020.
36. Chemical Radiculitis Induced by an Annular Tear Detected by Gadolinium-Enhanced Magnetic Resonance Imaging. Pain Practice. 2020.
37. Severe acitretin-induced diffuse idiopathic skeletal hyperostosis: a case report. Journal of International Medical Research. 2020.
38. Changes in neck angle, neck length, maximum diameter, maximum area and thrombus after endovascular aneurysm repair. Vascular Specialist International. 2020.
39. An unusual presentation of neuropathic pain following cervical spinal cord injury: a case report. BMC Neurology. 2020.
40. Tarsal tunnel syndrome due to talocalcaneal coalition. Journal of Yeungnam Medical Science. 2021.
41. Ultrasound-guided ethyl alcohol injection to the deep branch of the ulnar nerve to relieve hand spasticity in stroke patients: A case series. Translational Neuroscience. 2021.
42. Effectiveness of intravenous immunoglobulin for management of pain in patients with postpolio syndrome. Pain Research and Management. 2021.
43. The blood-brain barrier disruption after syncope: a dynamic contrast-enhanced magnetic resonance imaging study. Medicine. 2021.
44. Use of QR Codes for Promoting a Home-Based Therapeutic Exercise in Lumbar Disc Herniation and Lumbar Spinal Stenosis. Journal of Pain Research. 2022.
45. Neuropathic pain due to compression of cervical medial branch by cervical Juxtafacet cyst: A case report. Pain Practice. 2022.
46. Correlation between Forced Vital Capacity and the Severity of Frailty-Induced Dysphagia. Journal of Clinical Medicine. 2022.
47. Deep vein thrombosis of the common iliac vein caused by neurogenic heterotopic ossification. Journal of Spinal Cord Medicine. 2022.
48. Five to ten-year prognosis of whiplash injury-related chronic neck pain: a brief report. Journal of Back and Musculoskeletal Rehabilitation. 2023.
49. A novel app for assessing the caregivers’ physical activity: a pilot/feasibility study. Clinical Nursing Research. 2023.
50. Mobile monitoring system detects the disease activity pattern and shows the association with clinical outcomes in patients with newly diagnosed Crohn’s disease. Scientific Reports. 2024.
51. Pain and cognitive function in Korean older adults aged 60 years or more: A retrospective longitudinal study. Medicine. 2024.
52. Liver Stiffness Measurements After Oral Antivirals Effectively Predict the Risk of HCC in Patients With Chronic Hepatitis C. Journal of Gastroenterology and Hepatology. 2025.
53. LASSO regression analysis: applications in dyslipidemia and cardiovascular disease research. Journal of Lipid and Atherosclerosis. 2025.
54. Development of a Machine Learning-Based Predictive Model for Arteriovenous Fistula Occlusion After Surgery. Medicina. 2025.
55. Prognostic implications of moderate aortic stenosis with concomitant aortic regurgitation: insights from a multicenter cohort. European Heart Journal. 2025.
56. The E2F1-HMGCR axis promotes ferroptosis resistance in immune refractory tumor cells. Nature Communications. 2025.
57. Long-term outcomes of laparoscopic cytoreductive surgery with hyperthermic intraperitoneal chemotherapy. Surgical Endoscopy. 2026.