1.The principles of presenting statistical results using figures
Jae Hong PARK ; Dong Kyu LEE ; Hyun KANG ; Jong Hae KIM ; Francis Sahngun NAHM ; EunJin AHN ; Junyong IN ; Sang Gyu KWAK ; Chi-Yeon LIM
Korean Journal of Anesthesiology 2022;75(2):139-150
Tables and figures are commonly adopted methods for presenting specific data or statistical analysis results. Figures can be used to display characteristics and distributions of data, allowing for intuitive understanding through visualization and thus making it easier to interpret the statistical results. To maximize the positive aspects of figure presentation and increase the accuracy of the content, in this article, the authors will describe how to choose an appropriate figure type and the necessary components to include. Additionally, this article includes examples of figures that are commonly used in research and their essential components using virtual data.
2.The principles of presenting statistical results: Table
Sang Gyu KWAK ; Hyun KANG ; Jong Hae KIM ; Tae Kyun KIM ; EunJin AHN ; Dong Kyu LEE ; Sangseok LEE ; Jae Hong PARK ; Francis Sahngun NAHM ; Junyong IN
Korean Journal of Anesthesiology 2021;74(2):115-119
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 in their appearance, resulting in difficulties in the review and publication process. It might be due to the lack of clear written instructions regarding reporting of statistical results for authors. Therefore, the present article aims to briefly outline reporting methods for several table types, which are commonly used to present statistical results. We hope this article will serve as a guideline for reviewers as well as for authors, who wish to submit a manuscript to the KJA.
3.The principles of presenting statistical results: Table
Sang Gyu KWAK ; Hyun KANG ; Jong Hae KIM ; Tae Kyun KIM ; EunJin AHN ; Dong Kyu LEE ; Sangseok LEE ; Jae Hong PARK ; Francis Sahngun NAHM ; Junyong IN
Korean Journal of Anesthesiology 2021;74(2):115-119
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 in their appearance, resulting in difficulties in the review and publication process. It might be due to the lack of clear written instructions regarding reporting of statistical results for authors. Therefore, the present article aims to briefly outline reporting methods for several table types, which are commonly used to present statistical results. We hope this article will serve as a guideline for reviewers as well as for authors, who wish to submit a manuscript to the KJA.
4.Pathological Evaluation of Radiation-Induced Vascular Lesions of the Brain: Distinct from De Novo Cavernous Hemangioma.
Yoon Jin CHA ; Ji Hae NAHM ; Ji Eun KO ; Hyun Joo SHIN ; Jong Hee CHANG ; Nam Hoon CHO ; Se Hoon KIM
Yonsei Medical Journal 2015;56(6):1714-1720
PURPOSE: We aimed to evaluate the histologic and radiologic findings of vascular lesions after stereotactic radiosurgery (SRS) categorized as radiation-induced cavernous hemangioma (RICH). MATERIALS AND METHODS: Among 89 patients who underwent neurosurgery for cavernous hemangioma, eight RICHs from 7 patients and 10 de novo CHs from 10 patients were selected for histopathological and radiological comparison. RESULTS: Histologically, RICHs showed hematoma-like gross appearance. Microscopically, RICH exhibited a hematoma-like area accompanied by proliferation of thin-walled vasculature with fibrin deposits and infiltrating foamy macrophages. In contrast, CHs demonstrated localized malformed vasculature containing fresh and old clotted blood on gross examination. Typically, CHs consisted of thick, ectatic hyalinized vessels lined by endothelium under a light microscope. Magnetic resonance imaging of RICHs revealed some overlapping but distinct features with CHs, including enhancing cystic and solid components with absence or incomplete popcorn-like appearance and partial hemosiderin rims. CONCLUSION: Together with histologic and radiologic findings, RICH may result from blood-filled space after tissue destruction by SRS, accompanied with radiation-induced reactive changes rather than vascular malformation. Thus, the term "RICH" would be inappropriate, because it is more likely to be an inactive organizing hematoma rather than proliferation of malformed vasculature.
Adult
;
Aged
;
Brain/*pathology
;
Brain Neoplasms/*pathology
;
Female
;
Hemangioma, Cavernous/complications/*pathology/surgery
;
Hematoma/surgery
;
Humans
;
*Magnetic Resonance Imaging
;
Male
;
Middle Aged
;
Radiosurgery/adverse effects
;
Treatment Outcome
5.Usefulness of Serum IGF-I and IGFBP-3 Levels in Children with Short Stature.
Young Su JE ; Woo Ri JANG ; Chung Hyun NAHM ; Jong Won CHOI ; Jin Ju KIM ; Soon Ki KIM ; Ji Eun LEE ; In Young HYUN ; Yeonsook MOON
Journal of Laboratory Medicine and Quality Assurance 2014;36(1):48-53
BACKGROUND: Serum insulin-like growth factor-I (IGF-I) and insulin-like growth factor binding protein-3 (IGFBP-3) levels are known markers of growth hormone (GH) secretion. The clinical utility of serum IGF-I and IGFBP-3 testing, however, remains controversial. The aims of this study were to evaluate the usefulness of IGF-I and IGFBP-3 as indicators of GH secretion through the GH stimulation test and to investigate whether a decrease in serum IGF-I levels in children with short stature, regardless of the cause, can be used as a screening test for short stature. METHODS: A total of 262 children presented with short stature, precocious puberty, or premature thelarche and were grouped into 7 tiers based on the 2007 growth chart. Serum IGF-I and IGFBP-3 levels and GH stimulation were analyzed using an immunoradiometric assay, and the data from 68 children who were below the 3rd percentile for height were used to evaluate the usefulness of IGF-I and IGFBP-3 as markers of GH status. RESULTS: GH deficiency was confirmed by the GH stimulation test in 25 of the 68 children, and 15 (15/25, 60%) and 4 (4/25, 16%) of them showed a decrease in IGF-I and IGFBP-3 levels, respectively. The sensitivity and specificity for predicting GH secretion were 60% and 16%, respectively, for IGF-1 and 41.9% and 97.7%, respectively, for IGFBP-3. Decreased serum IGF-I levels were more frequently observed in children below the 25th percentile than in those in the 25th to 95th percentiles. CONCLUSIONS: IGF-I and IGFBP-3 levels have been used as a screening tool for GH secretion in children with short stature, but based on the results of the GH stimulation test in the current study, the levels of IGF-I and IGFBP-3 might not be useful as markers of GH secretion. Evaluating serum IGF-I levels alone is not a sufficient screening test for children with a short stature.
Child*
;
Growth Charts
;
Growth Hormone
;
Humans
;
Immunoradiometric Assay
;
Insulin-Like Growth Factor Binding Protein 3*
;
Insulin-Like Growth Factor I*
;
Mass Screening
;
Puberty, Precocious
;
Sensitivity and Specificity
6.Klebsiella Pneumoniae Associated Extreme Plasmacytosis.
Yeonsook MOON ; Woo Ri JANG ; Hyeon Gyu YI ; In Seo PARK ; Chung Hyun NAHM ; Jong Weon CHOI ; Jin Ju KIM ; Seung Baik HAN
Infection and Chemotherapy 2013;45(4):435-440
Infection-associated plasmacytosis is not uncommon; however, marked plasmacytosis in both peripheral blood and bone marrow that mimicks plasma cell leukemia is a very rare condition. We encountered a case of extreme plasmacytosis associated with Klebsiella pneumoniae sepsis in an aplastic anemia patient. A 42-year-old man presented with high fever of 5 days' duration. Hematological analysis revealed severe neutropenia and thrombocytopenia; his white blood cell count was 900/mm3, with 26% of plasma and plasmacytoid cells in peripheral blood. Bone marrow biopsy and aspiration showed 25% cellularity with marked plasmacytosis (80%), highly suggestive of plasma cell leukemia. On the eighth hospital day, K. pneumoniae was identified in blood and sputum cultures. Fever improved after switching antibiotics, although his hematological condition worsened. His bone marrow cellularity (plasma cell proportion) progressively decreased: the values were 25% (80%), 10% (26%), 10% (11%), and < 10% (< 4%) on the 8th, 30th, 60th, and 90th hospital day, respectively. His plasmacytosis was extremely severe but was confirmed to be reactive with polyclonality. The present case represents the first report of strong suspicion of K. pneumoniae sepsis-associated marked plasmacytosis in an aplastic anemia patient.
Adult
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Anemia, Aplastic
;
Anti-Bacterial Agents
;
Biopsy
;
Bone Marrow
;
Fever
;
Humans
;
Klebsiella pneumoniae*
;
Klebsiella*
;
Leukemia, Plasma Cell
;
Leukocyte Count
;
Neutropenia
;
Plasma
;
Plasma Cells
;
Pneumonia
;
Sepsis
;
Sputum
;
Thrombocytopenia
7.An immunohistochemical study on the initial development of 155 kd neurofascin in rat sciatic nerve.
Hee Young WON ; Ik Hyun CHO ; Jong Hwan LEE ; Sang Soep NAHM ; Nong Hoon CHOE ; Jae Hyung PARK ; Byung Joon CHANG
Korean Journal of Veterinary Research 2012;52(3):199-203
Neurofascin, one of the members of L1CAM, has been known to have some important roles during the development of nerve fibers. In order to investigate the role of neurofascin associated with the development of nerve fibers in the rat sciatic nerve, the initial development of NF155 in the paranode was studied with immuno-fluorescence and immuno-electron microscopy. The result of the present study showed NF155 was not detected in the fetal sciatic nerve and began to reveal at the postnatal day 0 (P0) and dramatically increased by time lapse until postnatal day 7 (P7). NF155 was prominently localized in the axolemma of paranode and not detected in the central region of node of Ranvier. According to the present study, NF155 is likely to have some relationships with the formation of paranode and myelin sheath.
Animals
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Immunohistochemistry
;
Microscopy, Immunoelectron
;
Myelin Sheath
;
Nerve Fibers
;
Neural Cell Adhesion Molecule L1
;
Rats
;
Sciatic Nerve
8.Significance of Serum Eosinophil Cationic Protein and High-Sensitivity C-reactive Protein Levels in Patients with Allergic and Non-Allergic Inflammatory Diseases.
Woo Ri JANG ; Jong Weon CHOI ; Chung Hyun NAHM ; Yeon Sook MOON ; Jin Ju KIM ; Jeong Hee KIM ; Dae Hyun LIM
Laboratory Medicine Online 2012;2(1):20-27
BACKGROUND: This study was conducted to evaluate the significance of serum eosinophil cationic protein (ECP) and high-sensitivity C-reactive protein (hs-CRP) levels in children with allergic diseases and non-allergic inflammatory diseases, and to assess the relationships between serum ECP levels and inflammatory parameters. METHODS: In this study, we included 146 children with allergic diseases, 76 children with non-allergic inflammatory diseases, and 25 control subjects. Serum concentrations of ECP, hs-CRP, total IgE, and allergen-specific IgE were measured. RESULTS: Serum ECP levels (77.5+/-88.2 microg/L) of patients with allergic diseases were significantly higher than those of the patients with non-allergic inflammatory diseases (42.2+/-58.8 microg/L) and control subjects (12.7+/-4.2 microg/L) (P<0.001, respectively). The serum ECP levels in patients with non-allergic inflammatory diseases were also significantly higher than those in the controls (42.2+/-58.8 vs. 12.7+/-4.2 microg/L; P<0.001). The hs-CRP levels were significantly higher in patients with allergic diseases than in the controls (0.4+/-0.9 vs. 0.1+/-0.2 mg/dL; P<0.05). No significant relationship was observed between serum ECP and hs-CRP levels in the allergic patients (r=0.09, P>0.05). CONCLUSIONS: Measurement of serum ECP and hs-CRP concentrations can be helpful in the clinical evaluation and monitoring of patients with allergic diseases. No significant correlation was observed between serum ECP and hs-CRP levels in allergic patients, thereby suggesting that elevated levels of ECP do not necessarily reflect the degree of systemic inflammation in allergic diseases.
C-Reactive Protein
;
Child
;
Eosinophil Cationic Protein
;
Eosinophils
;
Humans
;
Immunoglobulin E
;
Inflammation
9.Expression patterns of influenza virus receptors in the respiratory tracts of four species of poultry.
Ji Eun YU ; Hakyoung YOON ; Hyun Jeong LEE ; Jong Hwan LEE ; Byung Joon CHANG ; Chang Seon SONG ; Sang Soep NAHM
Journal of Veterinary Science 2011;12(1):7-13
The primary determinant of influenza virus infectivity is the type of linkage between sialic acid and oligosaccharides on the host cells. Hemagglutinin of avian influenza viruses preferentially binds to sialic acids linked to galactose by an alpha-2,3 linkage whereas hemagglutinin of human influenza viruses binds to sialic acids with an alpha-2,6 linkage. The distribution patterns of influenza receptors in the avian respiratory tracts are of particular interest because these are important for initial viral attachment, replication, and transmission to other species. In this study, we examined the distribution patterns of influenza receptors in the respiratory tract of chickens, ducks, pheasants, and quails because these species have been known to act as intermediate hosts in interspecies transmission. Lectin histochemistry was performed to detect receptor-bearing cells. Cell-specific distribution of the receptors was determined and expression densities were compared. We observed species-, site-, and cell-specific variations in receptor expression. In general, receptor expression was the highest in quails and lowest in ducks. Pheasants and quails had abundant expression of both types of receptors throughout the respiratory tract. These results indicate that pheasants and quails may play important roles as intermediate hosts for the generation of influenza viruses with pandemic potential.
Animals
;
Cell Membrane/metabolism/virology
;
Hemagglutinin Glycoproteins, Influenza Virus/metabolism
;
Host-Pathogen Interactions
;
Influenza A virus/*metabolism
;
Influenza in Birds/metabolism/transmission
;
Lectins/metabolism
;
Poultry/metabolism/*virology
;
Poultry Diseases/metabolism
;
Receptors, Cell Surface/analysis/chemistry/metabolism
;
Receptors, Virus/*analysis/metabolism
;
Respiratory System/*chemistry
;
Sialic Acids/metabolism
;
Species Specificity
;
Specific Pathogen-Free Organisms
10.Effects of compressive stress on the expression of M-CSF, IL-1beta, RANKL and OPG mRNA in periodontal ligament cells.
Ji Woong KIM ; Ki Soo LEE ; Jong Hyun NAHM ; Yoon Goo KANG
Korean Journal of Orthodontics 2009;39(4):248-256
OBJECTIVE: The aim of this study was to determine if human PDL cells can produce osteoclastogenic mRNA and examine how compressive stress affects the expression of osteoclastogenic mRNA in human PDL cells. METHODS: Human PDL cells were obtained from biscupids extracted for orthodontic treatment. The compressive force was adjusted by increasing the number of cover glasses. PDL cells were subjected to a compressive force of 0.5, 1.0, 2.0, 3.0 or 4.0 g/cm2 for 0.5, 1.5, 6, 24 or 48 hours. Reverse transcription polymerase chain reaction (RT-PCR) analysis was performed to examine levels of M-CSF, IL-1beta, RANKL, OPG mRNA expression. RESULTS: Human PDL cells could produce M-CSF mRNA. Human PDL cells under compressive stress showed increased M-CSF, IL-1beta and RANKL mRNAs expression in a force (up to 2 g/cm2) and time-dependent manner. However, OPG mRNA expression was constant regardless of the level and duration of stress. CONCLUSIONS: Continuous compressive stress induced the mRNA expression of osteoclastogenic cytokines including M-CSF, RANKL, IL-1beta in PDL cells. Together with an unchanged OPG mRNA level, these results suggest that compressive stress-induced osteoclastogenesis in vivo is partly controlled by M-CSF, RANKL and IL-1beta expression in PDL cells.
Cytokines
;
Eyeglasses
;
Glass
;
Humans
;
Macrophage Colony-Stimulating Factor
;
Periodontal Ligament
;
Polymerase Chain Reaction
;
Reverse Transcription
;
RNA, Messenger
;
Stress, Mechanical

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