1.National Trends in Healthcare Quality in Korea: A Multidimensional Assessment Using OECD Health Care Quality Indicators (2008–2023)
Hyejin LEE ; Soo-Hee HWANG ; Sang-A CHO ; Hyemin JUNG ; Youngs CHANG ; Jieun YUN ; Sanghyun CHO ; Un-Na KIM ; Hye Yeon KOO ; Eun Byul CHO ; Do Hee KIM ; Jin Yong LEE
Journal of Preventive Medicine and Public Health 2026;59(3):225-238
Objectives:
Assessing healthcare quality at the national level is essential for evaluating health system performance and identifying areas requiring improvement. This study examined long-term trends in healthcare quality in Korea from 2008 to 2023 using internationally comparable indicators.
Methods:
We conducted a trend analysis of healthcare quality in Korea using the Organization for Economic Cooperation and Development (OECD) Health Care Quality and Outcomes framework and quality indicators. Indicators across multiple domains, including acute care, primary care, prescribing in primary care, mental healthcare, and patient experiences, were analyzed and compared with OECD averages.
Results:
Healthcare quality in Korea improved across several domains. Thirty-day mortality for acute myocardial infarction decreased from 14.2% in 2008 to 10.2% in 2023, while mortality for ischemic stroke declined from 8.7% to 5.5%. Avoidable hospitalizations decreased substantially, with hospitalizations for chronic obstructive pulmonary disease declining by 59.7%. The proportion of patients with diabetes receiving cholesterol-lowering treatment increased from 44.1% to 82.5%. However, the proportion of broad-spectrum antibiotic prescriptions remained substantially higher than the OECD average (40.3 vs. 15.5%). In mental healthcare, excess mortality ratios increased from 4.3 in 2010 to 4.9 in 2023 for schizophrenia and from 3.5 to 4.3 for bipolar disorder, while post-discharge suicide rates showed little improvement. Patient experience indicators related to patient-physician communication improved and approached OECD averages.
Conclusions
Healthcare quality in Korea improved substantially between 2008 and 2023, particularly in acute care outcomes and chronic disease management. However, persistent challenges remain in areas such as antibiotic use, polypharmacy, and mental healthcare. These findings provide internationally comparable evidence to inform future health policy and healthcare quality improvement efforts.
2.Survival of Children with Acute Lymphoblastic Leukemia with Risk Group–Based Protocol Changes: A Single-Center Experience with 460 Patients over a 20-Year Period
Na Hee LEE ; Hee Young JU ; Eun Sang YI ; Young Bae CHOI ; Keon Hee YOO ; Hong Hoe KOO
Cancer Research and Treatment 2025;57(2):558-569
Purpose:
Recent treatments for pediatric acute lymphoblastic leukemia (ALL) are founded on risk stratification. We examined the survival rates and prognostic factors of patients over a 20-year period at a single institution.
Materials and Methods:
This study analyzed patients diagnosed with ALL and treated at the Pediatric Department of Samsung Medical Center (SMC). Patients were categorized into standard-risk (SR), high-risk (HR), and very high-risk (VHR) groups. The SMC protocol for the HR group underwent two changes during the study period: a modified Children’s Cancer Group (CCG)-1882 protocol was used from 2000 to 2005, the Korean multicenter HR ALL-0601 protocol from 2006 to 2014, and the Korean multicenter HR ALL-1501 protocol from 2015 to 2019.
Results:
Of the 460 patients, complete remission was achieved in 436 patients (94.8%). The 10-year overall survival rate (OS) was 83.8±1.9% for all patients. OS according to the SMC risk group was as follows: 95.9%±1.4% in the SR group, 83.8%±3.6% in the HR group, and 66.2%±6.9% in the VHR group. The 5-year OS within the HR group varied according to the treatment protocol: 73.9%±7.5%, in the modified CCG-1882 protocol, 83.0%±3.9%, in the 0601 protocol, and 96.2%±2.6%, in the 1501 protocol. For those aged 15 years and older, the OS was only 56.5%±13.1%. Relapse occurred in 71 patients (15.4%), and the OS after relapse was 37.7%±6.0%.
Conclusion
The treatment outcomes of patients with ALL improved markedly. However, there is a need to further characterize adolescents and young adult patients, as well as those who have experienced relapses.
3.The Effect of Hematopoietic Stem Cell Transplantation on Treatment Outcome in Children with Acute Lymphoblastic Leukemia
Hee Young JU ; Na Hee LEE ; Eun Sang YI ; Young Bae CHOI ; So Jin KIM ; Ju Kyung HYUN ; Hee Won CHO ; Jae Kyung LEE ; Ji Won LEE ; Ki Woong SUNG ; Hong Hoe KOO ; Keon Hee YOO
Cancer Research and Treatment 2025;57(1):240-249
Purpose:
Hematopoietic stem cell transplantation (HSCT) has been an important method of treatment in the advance of pediatric acute lymphoblastic leukemia (ALL). The indications for HSCT are evolving and require updated establishment. In this study, we aimed to investigate the efficacy of HSCT on the treatment outcome of pediatric ALL, considering the indications for HSCT and subgroups.
Materials and Methods:
A retrospective analysis was conducted on ALL patients diagnosed and treated at a single center. Risk groups were categorized based on age at diagnosis, initial white blood cell count, disease lineage (B/T), and cytogenetic study results. Data on the patients’ disease status at HSCT and indications of HSCT were collected. Indications for HSCT were categorized as upfront HSCT at 1st complete remission, relapse, and refractory disease.
Results:
Among the 549 screened patients, a total of 418 patients were included in the study; B-cell ALL (n=379) and T-cell ALL (T-ALL) (n=39). HSCT was conducted on a total of 106 patients (25.4%), with a higher frequency as upfront HSCT in higher-risk groups and specific cytogenetics. The overall survival (OS) was significantly better when done upfront than in relapsed or refractory state in T-ALL patients (p=0.002). The KMT2A-rearranged ALL patients showed superior event-free survival (p=0.002) and OS (p=0.022) when HSCT was done as upfront treatment.
Conclusion
HSCT had a substantial positive effect in a specific subset of pediatric ALL. In particular, frontline HSCT for T-ALL and KMT2A-rearranged ALL offered a better prognosis than when HSCT was conducted in a relapsed or refractory setting.
4.Survival of Children with Acute Lymphoblastic Leukemia with Risk Group–Based Protocol Changes: A Single-Center Experience with 460 Patients over a 20-Year Period
Na Hee LEE ; Hee Young JU ; Eun Sang YI ; Young Bae CHOI ; Keon Hee YOO ; Hong Hoe KOO
Cancer Research and Treatment 2025;57(2):558-569
Purpose:
Recent treatments for pediatric acute lymphoblastic leukemia (ALL) are founded on risk stratification. We examined the survival rates and prognostic factors of patients over a 20-year period at a single institution.
Materials and Methods:
This study analyzed patients diagnosed with ALL and treated at the Pediatric Department of Samsung Medical Center (SMC). Patients were categorized into standard-risk (SR), high-risk (HR), and very high-risk (VHR) groups. The SMC protocol for the HR group underwent two changes during the study period: a modified Children’s Cancer Group (CCG)-1882 protocol was used from 2000 to 2005, the Korean multicenter HR ALL-0601 protocol from 2006 to 2014, and the Korean multicenter HR ALL-1501 protocol from 2015 to 2019.
Results:
Of the 460 patients, complete remission was achieved in 436 patients (94.8%). The 10-year overall survival rate (OS) was 83.8±1.9% for all patients. OS according to the SMC risk group was as follows: 95.9%±1.4% in the SR group, 83.8%±3.6% in the HR group, and 66.2%±6.9% in the VHR group. The 5-year OS within the HR group varied according to the treatment protocol: 73.9%±7.5%, in the modified CCG-1882 protocol, 83.0%±3.9%, in the 0601 protocol, and 96.2%±2.6%, in the 1501 protocol. For those aged 15 years and older, the OS was only 56.5%±13.1%. Relapse occurred in 71 patients (15.4%), and the OS after relapse was 37.7%±6.0%.
Conclusion
The treatment outcomes of patients with ALL improved markedly. However, there is a need to further characterize adolescents and young adult patients, as well as those who have experienced relapses.
5.The Effect of Hematopoietic Stem Cell Transplantation on Treatment Outcome in Children with Acute Lymphoblastic Leukemia
Hee Young JU ; Na Hee LEE ; Eun Sang YI ; Young Bae CHOI ; So Jin KIM ; Ju Kyung HYUN ; Hee Won CHO ; Jae Kyung LEE ; Ji Won LEE ; Ki Woong SUNG ; Hong Hoe KOO ; Keon Hee YOO
Cancer Research and Treatment 2025;57(1):240-249
Purpose:
Hematopoietic stem cell transplantation (HSCT) has been an important method of treatment in the advance of pediatric acute lymphoblastic leukemia (ALL). The indications for HSCT are evolving and require updated establishment. In this study, we aimed to investigate the efficacy of HSCT on the treatment outcome of pediatric ALL, considering the indications for HSCT and subgroups.
Materials and Methods:
A retrospective analysis was conducted on ALL patients diagnosed and treated at a single center. Risk groups were categorized based on age at diagnosis, initial white blood cell count, disease lineage (B/T), and cytogenetic study results. Data on the patients’ disease status at HSCT and indications of HSCT were collected. Indications for HSCT were categorized as upfront HSCT at 1st complete remission, relapse, and refractory disease.
Results:
Among the 549 screened patients, a total of 418 patients were included in the study; B-cell ALL (n=379) and T-cell ALL (T-ALL) (n=39). HSCT was conducted on a total of 106 patients (25.4%), with a higher frequency as upfront HSCT in higher-risk groups and specific cytogenetics. The overall survival (OS) was significantly better when done upfront than in relapsed or refractory state in T-ALL patients (p=0.002). The KMT2A-rearranged ALL patients showed superior event-free survival (p=0.002) and OS (p=0.022) when HSCT was done as upfront treatment.
Conclusion
HSCT had a substantial positive effect in a specific subset of pediatric ALL. In particular, frontline HSCT for T-ALL and KMT2A-rearranged ALL offered a better prognosis than when HSCT was conducted in a relapsed or refractory setting.
6.Survival of Children with Acute Lymphoblastic Leukemia with Risk Group–Based Protocol Changes: A Single-Center Experience with 460 Patients over a 20-Year Period
Na Hee LEE ; Hee Young JU ; Eun Sang YI ; Young Bae CHOI ; Keon Hee YOO ; Hong Hoe KOO
Cancer Research and Treatment 2025;57(2):558-569
Purpose:
Recent treatments for pediatric acute lymphoblastic leukemia (ALL) are founded on risk stratification. We examined the survival rates and prognostic factors of patients over a 20-year period at a single institution.
Materials and Methods:
This study analyzed patients diagnosed with ALL and treated at the Pediatric Department of Samsung Medical Center (SMC). Patients were categorized into standard-risk (SR), high-risk (HR), and very high-risk (VHR) groups. The SMC protocol for the HR group underwent two changes during the study period: a modified Children’s Cancer Group (CCG)-1882 protocol was used from 2000 to 2005, the Korean multicenter HR ALL-0601 protocol from 2006 to 2014, and the Korean multicenter HR ALL-1501 protocol from 2015 to 2019.
Results:
Of the 460 patients, complete remission was achieved in 436 patients (94.8%). The 10-year overall survival rate (OS) was 83.8±1.9% for all patients. OS according to the SMC risk group was as follows: 95.9%±1.4% in the SR group, 83.8%±3.6% in the HR group, and 66.2%±6.9% in the VHR group. The 5-year OS within the HR group varied according to the treatment protocol: 73.9%±7.5%, in the modified CCG-1882 protocol, 83.0%±3.9%, in the 0601 protocol, and 96.2%±2.6%, in the 1501 protocol. For those aged 15 years and older, the OS was only 56.5%±13.1%. Relapse occurred in 71 patients (15.4%), and the OS after relapse was 37.7%±6.0%.
Conclusion
The treatment outcomes of patients with ALL improved markedly. However, there is a need to further characterize adolescents and young adult patients, as well as those who have experienced relapses.
7.The Effect of Hematopoietic Stem Cell Transplantation on Treatment Outcome in Children with Acute Lymphoblastic Leukemia
Hee Young JU ; Na Hee LEE ; Eun Sang YI ; Young Bae CHOI ; So Jin KIM ; Ju Kyung HYUN ; Hee Won CHO ; Jae Kyung LEE ; Ji Won LEE ; Ki Woong SUNG ; Hong Hoe KOO ; Keon Hee YOO
Cancer Research and Treatment 2025;57(1):240-249
Purpose:
Hematopoietic stem cell transplantation (HSCT) has been an important method of treatment in the advance of pediatric acute lymphoblastic leukemia (ALL). The indications for HSCT are evolving and require updated establishment. In this study, we aimed to investigate the efficacy of HSCT on the treatment outcome of pediatric ALL, considering the indications for HSCT and subgroups.
Materials and Methods:
A retrospective analysis was conducted on ALL patients diagnosed and treated at a single center. Risk groups were categorized based on age at diagnosis, initial white blood cell count, disease lineage (B/T), and cytogenetic study results. Data on the patients’ disease status at HSCT and indications of HSCT were collected. Indications for HSCT were categorized as upfront HSCT at 1st complete remission, relapse, and refractory disease.
Results:
Among the 549 screened patients, a total of 418 patients were included in the study; B-cell ALL (n=379) and T-cell ALL (T-ALL) (n=39). HSCT was conducted on a total of 106 patients (25.4%), with a higher frequency as upfront HSCT in higher-risk groups and specific cytogenetics. The overall survival (OS) was significantly better when done upfront than in relapsed or refractory state in T-ALL patients (p=0.002). The KMT2A-rearranged ALL patients showed superior event-free survival (p=0.002) and OS (p=0.022) when HSCT was done as upfront treatment.
Conclusion
HSCT had a substantial positive effect in a specific subset of pediatric ALL. In particular, frontline HSCT for T-ALL and KMT2A-rearranged ALL offered a better prognosis than when HSCT was conducted in a relapsed or refractory setting.
8.Indications and Methods for Additional Anterolateral Procedures during an Anterior Cruciate Ligament Reconstruction
The Journal of the Korean Orthopaedic Association 2025;60(2):82-90
The surgical reconstruction of the anterior cruciate ligament (ACL) has shown continuous advances, but concerns persist regarding its instability, the occurrence of post-traumatic osteoarthritis, and the high frequency of re-ruptures. Despite the lack of consensus regarding the precise structure of the anterolateral ligament (ALL) complex, this structure is anatomically present, and it can be damaged concurrently with the ACL, providing resistance to rotational instability. The debate regarding the timing and necessity of additional surgeries during ACL reconstruction is ongoing. Some authors advocate for concurrent procedures because of various risk factors, despite the widely varying opinions on this issue. Common adjunctive surgical techniques include ALL reconstruction and lateral extra-articular tenodesis. These procedures typically use various grafts and generally produce favorable clinical outcomes. Nevertheless, additional surgeries should be considered in certain cases because standard ACL reconstruction techniques may not be suitable for all patients. These cases include revision reconstructions, patients under 20 years old with high activity levels, those experiencing significant rotational instability, and individuals with specific anatomical risk factors. In such cases, procedures targeting the ALL complex may offer added benefits.
9.The Effects of Nursing Sudents' AI Literacy and Nursing Information Literacy Competence on their Problem Solving Process
Korean Journal of Rehabilitation Nursing 2024;27(2):78-87
Purpose:
This study aimed to identify the impact of nursing students' artificial intelligence (AI) literacy and nursing information literacy competence on their problem solving process, providing foundational data to enhance these skills.
Methods:
Data were collected from nursing students between June 1 and June 30, 2023, with a total of 248 responses analyzed.
Results:
The results indicated that nursing students’ AI literacy (r=.56, p<.001) and nursing information literacy competence (r=.78, p<.001) showed a significant positive correlation with their problem solving process. However, only nursing information literacy competence (β=.78, p<.001) was found to be a factor influencing the problem-solving process, with an explanatory power of 75%.
Conclusion
To improve nursing students' problem solving process, it is essential to develop and implement educational programs that enhance understanding of AI technology and information literacy competence. Furthermore, it is necessary to develop tools to measure AI literacy competence and conduct further research to identify the factors influencing the problemsolving process.
10.Effect of Residual Stone Fragments on Patient-Reported Quality of Life after Endoscopic Kidney Stone Surgery
Sang Hee LEE ; Jun-Koo KANG ; Jae-Wook CHUNG ; Yun-Sok HA ; Jun Nyung LEE ; Seock Hwan CHOI ; Hyun Tae KIM ; Tae-Hwan KIM ; Eun Sang YOO ; Tae Gyun KWON ; Bum Soo KIM
Urogenital Tract Infection 2024;19(2):31-39
Purpose:
This study examined the effects of residual fragments (RF) on the patient-reported quality of life (QOL) after kidney stone surgery, such as retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PCNL), using the Korean version of the Wisconsin Stone Quality of Life Questionnaire (K-WISQOL).
Materials and Methods:
The medical records of 156 patients who underwent RIRS or PCNL and completed the preoperative and postoperative K-WISQOL from January 2021 to September 2023 were analyzed retrospectively. The patients were divided into RIRS and PCNL groups by the surgical method. The participants completed the K-WISQOL within four weeks before and after treatment. The patients’ baseline characteristics, surgical outcomes, and K-WISQOL scores were compared according to the presence of RF in each surgical group.
Results:
Of the 156 patients, 95 underwent RIRS, and 61 underwent PCNL. In the RIRS group, the patients’ baseline characteristics and surgical outcomes were similar in the stone-free (SF) and RF subgroups. The changes in all K-WISQOL domain scores and total scores were similar in the two subgroups. In the PCNL group, the RF subgroup had a significantly higher proportion of staghorn stones, a significantly larger mean stone diameter and significantly longer operation time than those of the SF subgroup. But, the changes in all K-WISQOL domain scores and total scores were not significantly different between the two subgroups, as observed in the RIRS group.
Conclusions
This study showed that the presence of RFs after endoscopic kidney surgery did not affect the short-term patient-reported QOL regardless of the surgical methods.

Result Analysis
Print
Save
E-mail