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											| Gastroenterology / Original Article											Comorbidities and the use of comedications among patients with chronic hepatitis C in Korea: A nationwide cross-sectional study Kyung Min Kwon, Jae-Jun Shim, Gi-Ae Kim, Bo Ok Kim, Helin Han, Hyun Jung Ahn 
												Korean J Intern Med. 2023;38(3):338-348.   Published online April 10, 2023												 
													Background/Aims: Chronic hepatitis C (CHC) is the second leading cause of liver-related mortality and is more prevalent in the elderly population in Korea. Decisions to initiate treatment and selection of proper antiviral agents may be challenging among elderly patients due to relevant comorbidities..												 |  |  
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											| Rheumatology / Original Article											Burden of comorbidities and medication use in childbearing women with rheumatic diseases: a nationwide population-based study Min Kyung Chung, Chan Hee Lee, Jin Su Park, Hyunsun Lim, Jisoo Lee 
												Korean J Intern Med. 2022;37(6):1250-1259.   Published online July 9, 2021												 
													Background/Aims: We aimed to estimate the prevalence of comorbidities and medication use in Korean women with rheumatic diseases (RDs) during their childbearing years.
Methods: We included women aged 20 to 44 years with seropositive rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and..												 |  |  
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											| Gastroenterology / Original Article											Impact of liver cirrhosis on the clinical outcomes of patients with COVID-19: a nationwide cohort study of Korea Dongsub Jeon, Minkook Son, Jonggi Choi 
												Korean J Intern Med. 2021;36(5):1092-1101.   Published online August 18, 2021												 
													Background/Aims: The impact of liver cirrhosis (LC) on the clinical outcomes of patients with coronavirus disease 2019 (COVID-19) remains elusive. This study evaluated the association between LC and the development of severe complications from COVID-19.
Methods: We used the National Health Insuranc..												 |  |  
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											| Infectious diseases / Original Article											Comparison of antimicrobial resistances and clinical features in community-onset Escherichia coli and Klebsiella pneumoniae bacteremia Hwa Seok Sung, Je Won Lee, Sohyun Bae, Ki Tae Kwon 
												Korean J Intern Med. 2021;36(2):433-440.   Published online March 31, 2020												 
													Background/Aims: The aim of this study was to compare antimicrobial resistance, clinical features, and outcomes of community-onset Escherichia coli (COEC) and Klebsiella pneumoniae (COKP) bacteremia.
Methods: The medical records of patients diagnosed with E. coli or K. pneum..												 |  |  
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											| Hemato-oncology / Original Article											Impact of subsequent chemotherapy on the survival of elderly patients with extensive stage small cell lung cancer Eun Joo Kang, Yoon Ji Choi, Se Ryeon Lee, Hwa Jung Sung, Jung Sun Kim 
												Korean J Intern Med. 2020;35(6):1468-1476.   Published online April 29, 2020												 
													Background/Aims: The prognosis of small cell lung cancer (SCLC) is still poor because of rapid recurrence, despite good response to initial chemotherapy. Additionally, patients’ old ages and comorbidities are often obstacles that make it difficult to apply subsequent treatment after initial treatm..												 |  |  
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											| Hemato-oncology / Original Article											Metabolic comorbidities and medical institution utilization among breast cancer survivors: a national population-based study Jaesung Heo, Mison Chun, Young-Taek Oh, O Kyu Noh, Logyoung Kim 
												Korean J Intern Med. 2020;35(2):421-428.   Published online September 5, 2019												 
													Background/Aims: We investigated metabolic comorbidity status and patterns of medical institution utilization among breast cancer survivors using medical claims data from the Health Insurance Review and Assessment Service (HIRA).
Methods: Using claims data obtained from the HIRA, we selected breast..												 |  |  
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											| Nephrology / Original Article											The pattern of choosing dialysis modality and related mortality outcomes in Korea: a national population-based study Hyung Jong Kim, Jung Tak Park, Seung Hyeok Han, Tae-Hyun Yoo, Hyeong-Cheon Park, Shin-Wook Kang, Kyoung Hoon Kim, Dong-Ryeol Ryu, Hyunwook Kim 
												Korean J Intern Med. 2017;32(4):699-710.   Published online June 26, 2017												 
													Background/Aims: Since comorbidities are major determinants of modality choice, and also interact with dialysis modality on mortality outcomes, we examined the pattern of modality choice according to comorbidities and then evaluated how such choices affected mortality in incident dialysis patients.
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											| Gastroenterology / Original Article											Predictive factors of mortality within 30 days in patients with nonvariceal upper gastrointestinal bleeding Yoo Jin Lee, Bo Ram Min, Eun Soo Kim, Kyung Sik Park, Kwang Bum Cho, Byoung Kuk Jang, Woo Jin Chung, Jae Seok Hwang, Seong Woo Jeon 
												Korean J Intern Med. 2016;31(1):54-64.   Published online December 28, 2015												 
													Background/Aims: Nonvariceal upper gastrointestinal bleeding (NVUGIB) is a common medical emergency that can be life threatening. This study evaluated predictive factors of 30-day mortality in patients with this condition.
Methods: A prospective observational study was conducted at a single hospita..												 |  |  
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											| Pulmonology / Original Article											Disease burden of pneumonia in Korean adults aged over 50 years stratified by age and underlying diseases Jung Yeon Lee, Chul Gyu Yoo, Hyo-Jin Kim, Ki Suck Jung, Kwang Ha Yoo 
												Korean J Intern Med. 2014;29(6):764-773.   Published online October 31, 2014												 
													Background/Aims: This study was conducted to assess the disease burden of pneumonia according to age and presence of underlying diseases in patients admitted with community-acquired pneumonia (CAP).
Methods: We performed a retrospective, observational study and collected data targeting patients with..												 |  |  
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											| Original Article											Comorbidity Study on Type 2 Diabetes Mellitus Using Data Mining Hye Soon Kim, A Mi Shin, Mi Kyung Kim, Yoon Nyun Kim 
												Korean J Intern Med. 2012;27(2):197-202.   Published online May 31, 2012												 
													Background/AimsThe aim of this study was to analyze comorbidity in patients with type 2 diabetes mellitus (T2DM) by using association rule mining (ARM).Methods We used data from patients who visited Keimyung University Dongsan Medical Center fro..												 |  |  |