PURPOSE: This study was conducted to identify the factors that influence nurses' organizational citizenship behavior. METHODS: A cross-sectional design was used, with a convenience sample of 547 nurses from four university hospitals in Seoul and Gyeonggi province. The data were collected through a questionnaire survey done from September 22 to October 10, 2008. The tools used for this study were scales on organizational citizenship behavior (14 items), self-leadership (14 items), empowerment (10 items), organizational commitment (7 items), job satisfaction (8 items) and transformational.transactional leadership (14 items). Cronbach's alpha and factor analysis were examined to test reliability and construct validity of the scale. The data collected were processed using SPSS Window 15.0 Program for actual numbers and percentages, differences in the dependent variable according to general characteristics, and means, standard deviations, correlation coefficients and multiple regression analysis. RESULTS: The factors influencing nurses' organizational citizenship behavior were identified as self-leadership (beta=.247), empowerment (beta=.233), job satisfaction (beta=.209), organizational commitment (beta=.158), and transactional leadership (beta=.142). Five factors explained 42.0% of nurses' organizational citizenship behavior. CONCLUSION: The results of this study can be used to develop further management strategies for enhancement of nurses' organizational citizenship behavior.
Adult ; *Attitude of Health Personnel ; Cross-Sectional Studies ; Female ; Humans ; Interprofessional Relations ; Job Satisfaction ; Leadership ; Nursing Staff, Hospital/organization & administration/*psychology ; Organizational Culture ; Power (Psychology) ; Questionnaires

PURPOSE: In this study, porous type I collagen scaffolds were cross-linked using dehydrothermal(DHT) treatment and/or 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide(EDC), in the presence and absence of chondroitin-6-sulfate(CS) and cultured autologous chondrocytes(Chondro) for cartilage regeneration. METHODS: Cartilage defects were created in the proximal part of the ear of New Zealand rabbits. Four prepared types of scaffolds(n=4) were inserted. The groups included Chondro-Collagen-DHT(Group 1), Chondro- Collagen-DHT-EDC(Group 2), Chondro-CS-Collagen- DHT(Group 3), and Chondro-CS-Collagen-DHT-EDC (Group 4). Histomorphometric analysis and cartilage- specific gene expression of the reconstructed tissues were evaluated 4, 8, and 12 weeks after implantation . RESULTS: EDC cross-linked groups 2 and 4 regenerated more cartilage than other groups. However, calcification was observed in the 4th week after implantation. CS did not increase chondrogenesis in all groups. Cartilage-specific type II collagen mRNA expression increased in the course of time in all groups. CONCLUSION: EDC cross-linking methods maintain the scaffold and promote extracellular matrix production of chondrocytes.
Cartilage* ; Chondrocytes ; Chondrogenesis ; Chondroitin Sulfates ; Collagen Type I* ; Collagen Type II ; Ear ; Extracellular Matrix ; Gene Expression ; Rabbits ; Regeneration* ; RNA, Messenger

Dementia pugilistica (DP) or chronic traumatic encephalopathy (CTE) is a neurodegenerative disease or dementia that may affect amateur or professional boxers as well as athletes in other sports who suffer concussions. The condition is thought to affect around 15% to 20% of professional boxers and caused by repeated concussive or subconcussive blows. CTE was in the past referred to as dementia pugilistica, which reflected the prevailing notion that this condition was restricted to boxers. Recent research, however, has demonstrated neuropathological evidence of CTE in retired American football players, a professional wrestler, a professional hockey player and a soccer player, as well as in nonathletes. It is probable that many individuals are susceptible to CTE, including those who experience falls, motor vehicle accidents, assaults, epileptic seizures, or military combat, and that repeated mild closed head trauma of diverse origin is capable of instigating the neurodegenerative cascade leading to CTE. We report a 62-year old man suspicious of dementia pugilistica with clinical features of frontotemporal dementia and parkinsonism.
Athletes ; Brain Injury, Chronic ; Dementia ; Epilepsy ; Football ; Frontotemporal Dementia ; Head Injuries, Closed ; Hockey ; Humans ; Military Personnel ; Motor Vehicles ; Neurodegenerative Diseases ; Parkinsonian Disorders ; Soccer ; Sports

PURPOSE: This study aims at to make intermediate-term evaluations of a curriculum by investigating its development, operation and outcomes 2 years after its revision. METHODS: A survey using 5-point-Lickert scale questionnaires was given to the group of directors who developed the curriculum, instructors who only used it in their classes, and a student group from the first and second grades. Focus group interviews were performed in the professor groups. RESULTS: Curricular reform was evaluated as being systematic, democratic, and positive in general. Both groups answered questions positively about the relevance of the integrated curriculum and introduction of clinical medicine (ICM), graded as 3.4 (professor) and 3.5 (student). As for problem-based learning (PBL) and the patient-doctor-society (PDS), the professor group responded more positively than students. The 'web-based learning center' was recognized positively by many more students (4.01) than professors (2.75). With regard to the education outcome, professors gave 3.3 points and students 3.5 to an item that asked 'whether students attained the learning goal or not?' Professors, through interviews, showed their satisfaction with the attempt to reform the curriculum, but they pointed out that long-term evaluations should be performed. CONCLUSION: The interim evaluation of the revised curriculum, from its planning to its effects, affirmed by several suggestions to be successful in the long run through 1) enhancement of systematic participation and communication, 2) further integration, 3) steady evaluation, 4) greater effort on professional development, and 5) active interaction between professors and students.
Clinical Medicine ; Curriculum ; Evaluation Studies as Topic ; Focus Groups ; Humans ; Learning ; Problem-Based Learning ; Schools, Medical ; Surveys and Questionnaires

PURPOSE: To report the experience of OSCE performed as a summative assessment of the medical students in year 4 at Ewha Womans University. METHODS: Ninety-eight students took the twenty stations including 3 pairs of linked stations. We conducted duplicated OSCEs and each station runs 4 minutes 30 seconds. We analyzed the validity of stations, the reliability of duplicated OSCEs and the difference of scores according to the OSCE tools and categories. RESULTS: Mean OSCE score was 64.45+/-5.49 and Cronbach-alpha of total stations was 0.74. The scores between duplicated examinee groups and between duplicated evaluator groups were not different: the score of preceding examinee group was 63.3 and the later 65.7 (p=0.13), and the score of the first evaluator group was 64.6 and the second was 63.6 (p=0.16). However according to the individual analysis, 9 stations showed statistically discrepancies (p< 0.05) between duplicated evaluator groups. Regarding OSCE tools and categories, physical examination and skill categories did not show statistically significant differences between duplicated evaluator groups. OSCE scores showed moderate correlation with the cummulative performance grade in general (r=0.53, p< 0.01). CONCLUSIONs: OSCE could be regarded as a reasonable evaluating tool for the summative assessment after two years of clinical clerkship of the fourth year medical students. Analysis of the OSCE stations which was done individually and according to OSCE tools/categories helps to improve the OSCE more complete and the duplicated stations more coincident.
Clinical Clerkship* ; Female ; Humans ; Physical Examination ; Schools, Medical* ; Students, Medical

BACKGROUND: Bcr-abl rearrangement is the molecular hallmark of chronic myelogenous leukemia (CML). The test for bcr-abl rearrangement, especially using RT-PCR, is the standard test for the diagnosis of CML. We analyzed hematological significances of bcr-abl rearrangement by RT-PCR and the breakpoint distribution within the major bcr in CML patients. METHODS: From 1994 October to 1997 September, we performed the bcr-abl rearrangement using RT-PCR, in 268 untreated patients with various hematologic diseases, and classified the breakpoints within BCR gene as three types (b2a2, b3a2, e1a2) according to PCR product sizes. We compared hematologic parameters between two groups of b2a2 and b3a2 breakpoints in CML. RESULTS: Among the patients with clinically diagnosed CML, 96.8% (61/63) were bcr-abl positive. In ALL, 52.8% (19/36) were bcr- abl positive. All patients with hematologic diseases other than CML or ALL were bcr- abl negative. Among 61 CML patients with positive bcr-abl rearrangement, 19 patients (31.1%) showed b2a2 type and 42 patients (68.9%) b3a2 type. Patients with b3a2 breakpoints showed more frequent peripheral basophilia (P<0.01) than those with b2a2 type. However, other hematologic parameters were not statistically significant. CONCLUSION: RT-PCR test for bcr-abl rearrangement is a specific and efficient test for the diagnosis of CML. However, the hematological significance of b2a2 and b3a2 types is uncertain in CML.
Diagnosis ; Hematologic Diseases ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive* ; Polymerase Chain Reaction

A 57-year-old man with left flank pain was referred to our institute. Computed tomography scans revealed two enhancing masses in the left kidney. The clinical diagnosis was renal cell carcinoma (RCC). He underwent a radical nephrectomy with an adrenalectomy. Two well-circumscribed solid masses in the hilum and the lower pole (4.5 × 3.5 cm and 7.0 × 4.1 cm) were present. Poorly cohesive uniform round to polygonal epithelioid cells making solid sheets accounted for most of the tumor area. The initial diagnosis was RCC, undifferentiated with rhabdoid features. As the tumor showed loss of INI1 expression and a mutation in the SMARCB1 gene on chromosome 22, the revised diagnosis was a malignant rhabdoid tumor (MRT) of the kidney. To date, only a few cases of renal MRT in adults have been reported. To the best of our knowledge, this is the first report of MRT in the native kidney of an adult demonstrating a SMARCB1 gene mutation, a hallmark of MRT.

Objectives: Our study aimed to present the distinctive correlates of formal thought disorder in patients with schizophrenia, using the Clinical Language Disorder Rating Scale (CLANG). Methods: We compared clinical characteristics between schizophrenia patients with (n = 84) and without (n = 82) formal thought disorder. Psychometric scales including the CLANG, the Brief Psychiatric Rating Scale (BPRS), the Young Mania Rating Scale (YMRS), the Calgery Depression Scale for Schizophrenia (CDSS) and the Word Fluency Test (WFT) were used. Results: After adjusting the effects of age, sex and total scores on the BPRS, YMRS and WFT, the subjects with disorganized speech presented significantly higher score on the abnormal syntax (p = 0.009), lack of semantic association (p = 0.005), discourse failure (p < 0.0001), pragmatics disorder (p = 0.001), dysarthria (p < 0.0001), and paraphasic error (p = 0.005) items than those without formal thought disorder. With defining the mentioned item scores as covariates, binary logistic regression model predicted that discourse failure (adjusted odds ratio [aOR] = 5.88, p < 0.0001) and pragmatics disorder (aOR = 2.17, p = 0.04) were distinctive correlates of formal thought disorder in patients with schizophrenia. Conclusions This study conducted Clinician Rated Dimensions of Psychosis Symptom Severity (CRDPSS) and CLANG scales on 166 hospitalized schizophrenia patients to explore the sub-items of the CLANG scale independently related to formal thought disorders in schizophrenia patients. Discourse failure and pragmatics disorder might be used as the distinctive indexes for formal thought disorder in patients with schizophrenia.

Objective: The purpose of this study was to analyze the current situation concerning professionalism among emergency physicians in South Korea by conducting a survey regarding their perceptions and experiences of unprofessional behavior. Methods: In October 2018, the authors evaluated the responses to a questionnaire administered to 548 emergency physicians at 28 university hospitals. The participants described their perceptions and experiences concerning 45 unprofessional behaviors classified into the following five categories: patient care, communication with colleagues, professionalism at work, research, and violent behavior and abusive language. Furthermore, the responses were analyzed by position (resident vs. faculty). Descriptive statistics were generated on the general characteristics of the study participants. To compare differences in responses by position and sex, the chi-square and Fisher exact tests were performed. Results: Of the 548 individuals invited to participate in this study, 253 responded (response rate, 46.2%). In 34 out of 45 questionnaires, more than half of participants reported having experienced unprofessional behavior despite their negative perceptions. Eleven perception questions and 38 experience questions for unprofessional behavior showed differences by position. Conclusion Most emergency physicians were well aware of what constituted unprofessional behavior; nevertheless, many had engaged in or observed such behavior.

PURPOSE: Clinical performance examination(CPX) using standardized patients(SPs) is an acceptable method of testing medical professionals, but there has been some concerns about security. The objective of this work is to examine whether the day of the examination influences the scores of examinees of different medical schools at different times throughout the examination period. METHODS: Six medical schools, which had participated in the Seoul-Gyeonggi CPX Consortium 2005, were enrolled. Each station, controlled by the same regulations, included 12 minutes of SP encounter and 5 minutes of writing a short essay. We compared the mean scores using ANOVA and linear trends with multiple regression analyses and SPSS version 11.0. RESULTS: The mean score of examinees from all 6 medical schools was 63.2+/-.9. There was no difference in total mean scores among the medical schools according to the period when CPX was conducted. Classified by their examination day, there was no difference among the mean scores of the 1st, 2nd, and 3rd day, but in one school where the examination was performed for 5days, the mean scores of the 4th day was higher than the others(p<0.05). There were trends of linear increases over the five days for the 'physical examination'question, but not for 'physician-patient interaction'and 'patient education'. CONCLUSION: The changes in scores according to the examination day in this study did not show consistent results. However, the variable results seen according to school, test question, and examination day need further analysis for test security issues.
Clinical Competence ; Humans ; Schools, Medical* ; Social Control, Formal ; Writing