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The principles of presenting statistical results: Table

Kwak SG, Kang H, Kim JH, Kim TK, Ahn E, Lee DK, Lee S, Park JH, Nahm FS, In J

General medical journals such as the Korean Journal of Anesthesiology (KJA) receive numerous manuscripts every year. However, reviewers have noticed that the tables presented in various manuscripts have great diversity...
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Long-term benefits of chest compression-only cardiopulmonary resuscitation training using real-time visual feedback manikins: a randomized simulation study

Jang TC, Ryoo HW, Moon S, Ahn JY, Lee DE, Lee WK, Kwak SG, Kim JH

Objective Cardiopulmonary resuscitation (CPR) education with a feedback device is known to result in better CPR skills compared to one without the feedback device. However, its long-term benefits have not...
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Fasting Plasma Glucose Level Independently Predicts the Mortality of Patients with Coronavirus Disease 2019 Infection: A Multicenter, Retrospective Cohort Study

Chang MC, Hwang JM, Jeon JH, Kwak SG, Park D, Moon JS

Background: Coronavirus disease 2019 (COVID-19) has become a global pandemic, which prompts a consensus for the necessity to seek risk factors for this critical disease. Risk factors affecting mortality of...
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Changes in Neck Angle, Neck Length, Maximum Diameter, Maximum Area and Thrombus after Endovascular Aneurysm Repair

Lee JH, Park KH, Kwak SG

Purpose: The correlation of initial anatomy of the aneurysm, aneurysmal remodeling and endoleaks is controversial. We performed a retrospective study to measure aneurysmal remodeling with time, and to assess the...
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Anti-Sm Antibody, Damage Index, and Corticosteroid Use Are Associated with Cardiac Involvement in Systemic Lupus Erythematosus: Data from a Prospective Registry Study

Choe JY, Lee SS, Kwak SG, Kim SK

Background: Disease-specific factors that predispose patients to diverse cardiac diseases in systemic lupus erythematosus (SLE) have been established. The aim of this study was to identify risk factors for cardiac...
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Retrospective analysis of risk factors of hypotensive bradycardic events during shoulder arthroscopic surgery under interscalene blockade in the sitting position

Ryu T, Kim BJ, Woo SJ, Lee SY, Lim JA, Kwak SG, Roh WS

Background: Hypotensive bradycardic events (HBEs) are a frequent adverse event in patients who underwent shoulder arthroscopic surgery under interscalene block (ISB) in the sitting position. This retrospective study was conducted...
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Comparison of three risk stratification models for non-clear cell renal cell carcinoma patients treated with temsirolimus as first-line therapy

Lee IH, Kang BW, Kim JG, Bae WK, Ki MS, Park I, Jo JC, Kim JY, Koh SA, Lee KH, Cho YY, Ryoo HM, Kwak SG, Lee JL, Lee SA

Background/Aims: For metastatic renal cell carcinoma (RCC), various prognostic scoring systems have been developed. However, owing to the low prevalence of nonclear cell RCC, the three most commonly used tools...
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Daclatasvir and asunaprevir combination therapy for patients with chronic hepatitis C virus genotype 1b infection in real world

Oh JY, Kim BS, Lee CH, Song JE, Lee HJ, Park JG, Hwang JS, Chung WJ, Jang BK, Kweon YO, Tak WY, Park SY, Jang SY, Suh JI, Kwak SG

BACKGROUND/AIMS: Previous studies have reported a high rate of sustained virologic response (SVR) and a low rate of serious adverse events with the use of daclatasvir (DCV) and asunaprevir (ASV)...
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The Effect of Mycophenolate Mofetil on Non-Renal Manifestations in Systemic Lupus Erythematosus: Results from Korean Lupus Network Registry

Jung UH, Kwak SG, Choe JY, Lee SS, Kim SK

BACKGROUND: The objective of this study was to identify the effects of mycophenolate mofetil (MMF) on non-renal manifestations in systemic lupus erythematosus (SLE). METHODS: The study population comprised 439 SLE patients...
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What Should We Consider Carefully When Performing Survival Analysis?

Kwak SG, Choi EJ

The survival data and the survival analysis are the data and analysis methods used to study the probability of survival. The survival data consist of a period from the juncture...
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Normality Test in Clinical Research

Kwak SG, Park SH

In data analysis, given that various statistical methods assume that the distribution of the population data is normal distribution, it is essential to check and test whether or not the...
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Can the Zero-Profile Implant Be Used for Anterior Cervical Discectomy and Fusion in Traumatic Subaxial Disc Injury? A Preliminary, Retrospective Study

Kim TH, Kim DH, Kim KH, Kwak YS, Kwak SG, Choi MK

OBJECTIVE: The zero-profile implant (Zero-P) is accepted for use in anterior cervical fusion for the treatment of degenerative cervical disease. However, evidence pertaining to its efficiency and safety in traumatic...
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Disparity in Crohn’s disease activity between home and clinics is associated with unscheduled hospital visits due to disease flares

Kim ES, Lee YJ, Jang BI, Kim KO, Kim EY, Lee HS, Jeon SW, Kwak SG, on behalf of Crohn’s and Colitis Association in Daegu-Gyeongbuk (CCAiD)

BACKGROUND/AIMS: E-health technologies have been implemented for the management of Crohn’s disease (CD). We aimed to identify differences between patient activities at home and at routine clinic visits using a...
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Characteristics and management of patients with inflammatory bowel disease between a secondary and tertiary hospitals: a propensity score analysis

Song KH, Kim ES, Lee YJ, Jang BI, Kim KO, Kwak SG, Lee HS, on behalf of Crohn's and Colitis Association in Daegu-Gyeongbuk (CCAiD)

BACKGROUND/AIMS: This study aimed to compare the clinical characteristics and management patterns of inflammatory bowel disease (IBD) patients in a secondary hospital (SH) with those in tertiary referral centers (TRC). METHODS:...
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Prescription pattern of urate-lowering therapy in Korean gout patients: data from the national health claims database

Kim JW, Kwak SG, Park SH

No abstract available.
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Ultrasonographic findings of the normal diaphragm: thickness and contractility

Seok JI, Kim SY, Walker FO, Kwak SG, Kwon DH

BACKGROUND: Neuromuscular ultrasound can be used to assess the diaphragm. Before it can be used clinically, the reference ranges of diaphragm thickness and contractility must be determined. METHODS: We measured the...
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Central limit theorem: the cornerstone of modern statistics

Kwak SG, Kim JH

According to the central limit theorem, the means of a random sample of size, n, from a population with mean, µ, and variance, σ², distribute normally with mean, µ, and...
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Validation of the Korean-Version of the Clinical Assessment Interview for Negative Symptoms of Schizophrenia (CAINS)

Jung SI, Woo J, Kim YT, Kwak SG

The Clinical Assessment Interview for Negative Symptoms (CAINS) was developed to overcome the limitations of existing instruments and reflect the current view of negative symptoms. The aim of the present...
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The Effect of GCSB-5 a New Herbal Medicine on Changes in Pain Behavior and Neuroglial Activation in a Rat Model of Lumbar Disc Herniation

Cho HK, Kim SY, Choi MJ, Baek SO, Kwak SG, Ahn SH

OBJECTIVE: Lumbar disc herniation can induce sciatica by mechanical compression and/or chemical irritation. The aim of this study was to compare the effects of GCSB-5 (Shinbaro(R)) and NSAIDs on pain-related...
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A Case of Co-Existence Squamous Cell Carcinoma with Granuloma in Posterior Glottis

Kwak SG, Kim CD, Kim EJ, Kim SW

The laryngeal granuloma (LG) is non-neoplastic lesion that mainly develops in the posterior vocal folds. It is welknown that mis- or overuse of voice, habitual coughing, and endotracheal intubation can...
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