| 2018 | D-dimer as a marker of acute pyelonephritis in infants younger than 24 months with urinary tract infection | 이정원 | Article |
| 2005 | Data cleansing for service-oriented architecture | 최병주; 이정원 | Conference Paper |
| 2008 | Development and Application of Antibodies Specific for PLC-γ1 phosphorylated at Y783 | 이정원 | Master's Thesis |
| 2019 | Effects of Prenatal Growth Status on Subsequent Childhood Renal Function Related to High Blood Pressure | 박은애; 김혜순; 박혜숙; 조수진; 박보현; 이정원 | Article |
| 2018 | Efficacy and safety of rituximab in childhood-onset, difficult-to-treat nephrotic syndrome A multicenter open-label trial in Korea | 이승주; 이정원 | Article |
| 2004 | Finding maximal similar paths between XML documents using sequential patterns | 박승수; 이정원 | Article |
| 2024 | Fluctuating risk of acute kidney injury-related mortality for four weeks after exposure to air pollution: A multi-country time-series study in 6 countries | 하은희; 강덕희; 이정원 | Article |
| 2023 | Genotype–phenotype correlation of X-linked Alport syndrome observed in both genders: a multicenter study in South Korea | 이정원 | Article |
| 2017 | High-Speed Name Lookup Algorithms Using Bloom Filter Variants for Named Data Networking | 이정원 | Doctoral Thesis |
| 2021 | Identification of Cardiovascular Risk Factors in Obese Adolescents With Metabolic Syndrome | 홍영미; 김혜순; 이정원 | Article |
| 2019 | Implementation of multi-layer neural network system for neuromorphic hardware architecture | 신형순; 선우경; 이정원 | Conference Paper |
| 2023 | Increase of Prevalence of Obesity and Metabolic Syndrome in Children and Adolescents in Korea during the COVID-19 Pandemic: A Cross-Sectional Study Using the KNHANES | 김혜순; 박혜숙; 이정원; 이혜아; 이지현; 최정은 | Article |
| 2022 | Increasing prevalence of fasting hyperglycemia in adolescents aged 10–18 years and its relationship with metabolic indicators: the Korea National Health and Nutrition Examination Study (KNHANES), 2007– 2018 | 김혜순; 박혜숙; 이정원; 이혜아; 이지현 | Article |
| 2021 | Lower albumin level and longer disease duration are risk factors of acute kidney injury in hospitalized children with nephrotic syndrome | 이정원 | Article |
| 2021 | Obesity and chronic kidney disease: What should pediatric nephrologists know? | 이정원 | Article |
| 2001 | Preparations for semantics-based XML mining | 이기호; 이정원 | Conference Paper |
| 2020 | Remission of Proteinuria May Protect against Progression to Chronic Kidney Disease in Pediatric-Onset IgA Nephropathy | 이정원 | Article |
| 2022 | The compatibility of new blood pressure reference values for Korean children and adolescents with the US reference: the Korean Working Group of Pediatric Hypertension | 김혜순; 이정원 | Article |
| 2019 | The Protective Effect of Exclusive Breastfeeding on Overweight/Obesity in Children with High Birth Weight | 하은희; 김영주; 김혜순; 이명지; 이정원 | Article |
| 2017 | The value of delta neutrophil index in young infants with febrile urinary tract infection | 이정원 | Article |
| 2003 | 개념결합의 해석 처리방식에 관한 이해 : 이중과정론과 CARIN이론 | 이정원 | Master's Thesis |
| 2003 | 고용상 연령차별에 관한 연구 | 이정원 | Master's Thesis |
| 2011 | 군 복무 부적응 병사들을 위한 희망의 목회적 돌봄에 관한 연구 | 이정원 | Doctoral Thesis |
| 2003 | 노인의 통합성과 영성을 위한 목회적 돌봄 : 이야기하기를 통하여 | 이정원 | Master's Thesis |
| 2009 | 대학생의 분리-개별화와 인터넷 중독 | 이정원 | Master's Thesis |
| 2003 | 마티에르 개념을 도입한 패션일러스트레이션연구 | 이정원 | Master's Thesis |
| 1998 | 방송언어의 可聞性 연구 | 이정원 | Master's Thesis |
| 2007 | 북한 소학교 국어교과서에 나타난 정치사상교육 연구 | 이정원 | Master's Thesis |
| 2011 | 브랜드 네임에 적용된 한글 캘리그라피의 소비자 감성과 선호도에 관한 연구 | 이정원 | Master's Thesis |
| 2013 | 블룸 필터를 사용한 IP 주소 검색 알고리즘의 성능향상에 관한 연구 | 이정원 | Master's Thesis |
