• 제목/요약/키워드: Coefficient of Concordance

검색결과 46건 처리시간 0.023초

사상체질 전문가의 진단 우선순위 일치도 검증 (The Verification of Concordance Coefficient in Sasang Constitutional Factors by Expert)

  • 장은수;김호석;유종향;김상혁;백영화;이시우
    • 사상체질의학회지
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    • 제21권2호
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    • pp.79-86
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    • 2009
  • 1. Objective : This study aimed to know the concordance coefficient and diagnostic trend of 6 Sasang constitution diagnosis factors among experts, which are important to diagnose Sasang constitution. 2. Methods : We suggested each 100 cases containing body shape, face, temperament, physiological and pathological symptom and constitutional drug response to 2 groups experts, and researched expert opinions. We analyzed concordance coefficient with Kendall's coefficient of concordance W. 3. Results : 1) Experts agreed with 167(82.5%) diagnosis results of cases, but there were 33 cases(17.5%), with which even one expert disagreed 2) The concordance of priority order of Sasang constitutional factors was significantly associated within expert. 3) Experts put the priority concordance to drug response and Face, body shape, voice and Pathological and physiological symptoms in order. 4) In case by case, concordance coefficient was 47(55.9%) in group 1, 9(10.8%) in group 2, 56 (33.5%) in total. 4. Conclusions : Experts made much account of drug responses and faces in diagnosing Sasang constitution. but there were different opinions in concordance coefficient. So Sasang Constitution Diagnosis Guideline is necessary to integrate experts opinions.

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빅데이터 분석을 통한 보유비용모형에 근거한 주가지수선물의 가격괴리에 대한 분석 (The Existence of Mispriced Futures Contracts in the Korean Financial Market)

  • 김현경;남승오
    • Journal of Information Technology Applications and Management
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    • 제21권4호
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    • pp.97-125
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    • 2014
  • This study investigates the relationship between stock index and its associated nearby futures markets based on the cost-of-carry model. The purpose of this study is to explore the existence of mispriced futures contracts, and to test whether traders can earn trading profits in real financial market using the information about the mispriced futures contracts. This study suggests the concordance correlation coefficient to investigate the existence of mispriced futures contracts. The concordance correlation coefficient gives a desirable result for trading profits that results from a comparative analysis among profits from trading at the time to indicate trading opportunities determined by the degree of the difference between the observed market price and the theoretical price of a futures contract. In addition, this study also explains that the concordance correlation coefficient developed from the mean square error (MSE) has a statistically theoretical meaning. In conclusion, this study shows that the concordance correlation coefficient is appropriate for analyzing the relationship between the observed stock index futures market price and the theoretical stock index futures price derived from the cost-of-carry model.

의마 가공된 견직물의 효율적인 주관적 감성평가 방법 (An effective evaluation method for the subjective sensibility of linen-like silk)

  • 유지호;이정순
    • 한국생활과학회지
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    • 제15권3호
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    • pp.439-447
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    • 2006
  • The purpose of this study is to explore the accuracy and reliability of subjective evaluation instruments in evaluating sensibility of similar fabrics, Kendall's coefficient of concordance W (agreement among subjects) and Spearman rank correlation coefficient (reproducibility after 1 week) were used to evaluate which one is more efficient. Eight kinds of linen-like silk fabrics finished with polyurethane resin were used, Subjective evaluation instruments such as rating scale method, contrasting method against a control, rank ordering method, paired comparison and Quad analysis were used, 'Stiffness and Pliability' and 'Preference of summer fabric' were estimated, From the result of subjective stiffness and pliability, which are effective on objective properties of fabric, the rating scale method in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient were given the highest score, From the result of subjective preference of summer fabric, which are effective on individual sensibility, contrasting method against a control in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient revealed the highest score, Regarding the accuracy, reliability and efficiency, Quad analysis was an efficient method for subjective evaluation of linen-like silk fabrics.

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한방 의료기관의 체질진단 항목 우선도에 관한 연구 (A Study on the Priority Order of Sasang Constitutional Factors in Oriental Medical Clinics)

  • 장은수;이시우;유종향;이혜정;황지호;주종천
    • 사상체질의학회지
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    • 제20권3호
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    • pp.133-141
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    • 2008
  • l. Objectives This study aims to know the coefficient of five Sasang constitution diagnosis factors' concordance in and among Oriental Medical Clinics, which are important to diagnose Sasang constitution, 2. Methods We collected 701 subjects in Oriental Medical Clinics, who were diagnosed by experts, and they marked the priority order of Sasang constitutional factors in paper. 3. Results 1) The concordance of priority order about Sasang constitutional factors was significantly associated within Oriental Medical Clinics. 2) The concordance of priority order of Sasang constitutional factors was not significantly associated among 12 Oriental Medical Clinics, so we find out that each medical clinics has a different point of view of deciding the rank of diagnosis factors. 3) We show that the factor of Sasang constitutional drug response was the most important one to confirm Sasang constitution and factors have a different order according to clinic type and qualification of experts 4. Conclusions Sasang constitution expect has their own view in diagnosis priority order and that was different among them.

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가정학 연구에서 활용되는 관능검사에 대한 신뢰도 평가방법에 관한 연구 (Improvement of Reliability in the Sensory Evaluation for Home Economics Research)

  • 위은하;박정수
    • 한국가정과학회지
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    • 제3권2호
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    • pp.90-100
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    • 2000
  • Statistical reliability in the sensory evaluation measures the agreement of judgements for several observers. Kendall's coefficient of concordance for multiple rankings. and coefficient of consistence and coefficient of agreement for paired comparisons are frequently used as the standard reliability measures. The main idea and the computational formula of these coefficients in various situations are explained in detail with some real (cloth designing) examples. Moreover a user-friendly computer program called as MultPair is introduced. We expect that this expository paper and the computer program give a practical help to the researchers who use the sensory evaluation techniques.

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Audio and Video Bimodal Emotion Recognition in Social Networks Based on Improved AlexNet Network and Attention Mechanism

  • Liu, Min;Tang, Jun
    • Journal of Information Processing Systems
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    • 제17권4호
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    • pp.754-771
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    • 2021
  • In the task of continuous dimension emotion recognition, the parts that highlight the emotional expression are not the same in each mode, and the influences of different modes on the emotional state is also different. Therefore, this paper studies the fusion of the two most important modes in emotional recognition (voice and visual expression), and proposes a two-mode dual-modal emotion recognition method combined with the attention mechanism of the improved AlexNet network. After a simple preprocessing of the audio signal and the video signal, respectively, the first step is to use the prior knowledge to realize the extraction of audio characteristics. Then, facial expression features are extracted by the improved AlexNet network. Finally, the multimodal attention mechanism is used to fuse facial expression features and audio features, and the improved loss function is used to optimize the modal missing problem, so as to improve the robustness of the model and the performance of emotion recognition. The experimental results show that the concordance coefficient of the proposed model in the two dimensions of arousal and valence (concordance correlation coefficient) were 0.729 and 0.718, respectively, which are superior to several comparative algorithms.

연변 거주 중국인 대상자를 통해 살펴본 체질 진단툴(Sasang Constitutional Analysis Tool)의 해외 적용 가능성 탐색 연구 (The Preliminary Study on the Possibility of Applying Sasang Constitutional Analysis Tool to Foreign Site based on Yanbian Chinese)

  • 유종향;김윤영;도준형;박기현;장은수
    • 사상체질의학회지
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    • 제24권3호
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    • pp.42-49
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    • 2012
  • Objectives This study aimed to assessing the performance of Sasang constitutional analysis Tool (SCAT) for Chinese as one of method to diagnose Sasang Constitution and evaluating the possibility of applying SCAT to foreign people. Methods This cross-sectional study was approved by IRB (Independent Review Board) at J Hospital in Yanbian. Informed consent to take part in the study was obtained from each of the participants. The performance of SCAT was assessed through Kappa coefficient and the concordance rate between SCAT and expert diagnosis. Results The concordance rate between SCAT and expert was 61.1% in total and the Kappa was 0.408. When the constitutional probability increased, the concordance rate and Kappa showed a increasing tendency. The concordance rate of Chosun race was 62.1% and others 60.7%. Conclusions SCAT, as Sasang constitutional diagnostic supporting system, may help the expert to diagnose Sasang constitution in Yanbian region.

외상 환자와 비외상 환자에서 삼투압차와 에탄올 농도의 상관관계 및 추정 에탄올 농도의 정확도 (Correlation Between the Osmolar Gap and Serum Ethanol Level and the Accuracy of Estimated Ethanol Level in Trauma Patients and Non-Trauma Patients)

  • 장형우;심민섭;한상국;송형곤
    • Journal of Trauma and Injury
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    • 제22권2호
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    • pp.148-153
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    • 2009
  • Purpose: The osmolar gap increases in proportion to the ethanol level. Some previous studies have shown that the correlation between the osmolar gap and the ethanol level is weak in trauma patient by using an indirect comparison with other patients. We conducted a direct comparison of the correlation of the osmolar gap to the ethanol level between trauma patients and non-trauma patients. We also analyzed the accuracy of the estimated ethanol level between the two groups. Methods: The research candidates were adult patients who had visited the emergency department of our hospital from December 2003 to November 2008. By using a retrospective chart review, we classified them into three subgroups: non-trauma without shock, trauma without shock, and trauma with shock. In each group, we compared the correlation between the osmolar gap and the measured ethanol level, and we analyzed the accuracy of the estimated ethanol level by using Lin's concordance correlation coefficient. Results: Four hundred forty-seven patients were enrolled in this study. For correlation of the osmolar gap and the measured ethanol level, Pearson's correlation coefficient was 0.916 in all patients, 0.939 in non-trauma without shock patients, 0.917 in trauma without shock patients, and 0.844 in trauma with shock patients. In the analysis of the accuracy of the estimated ethanol level by using Lin's concordance correlation coefficient, the accuracy in trauma with shock patients was lower than that in non-trauma without shock patients. Conclusion: We found that the correlation between the osmolar gap and the measured ethanol level in the patient group with trauma was lower than it was in the patient group without trauma. Moreover trauma patients with shock had a lower accuracy of the estimated ethanol level than non-trauma patients.

Comparison of three types of analyzers for urine protein-to-creatinine ratios in dogs

  • Ji, Sumin;Yang, Yeseul;Jeong, Yeji;Hwang, Sung-Hyun;Kim, Myung-Chul;Kim, Yongbaek
    • Journal of Veterinary Science
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    • 제22권1호
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    • pp.14.1-14.11
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    • 2021
  • Background: Quantitation of urine protein is important in dogs with chronic kidney disease. Various analyzers are used to measure urine protein-to-creatinine ratios (UPCR). Objectives: This study aimed to compare the UPCR obtained by three types of analyzers (automated wet chemistry analyzer, in-house dry chemistry analyzer, and dipstick reading device) and investigate whether the differences could affect clinical decision process. Methods: Urine samples were collected from 115 dogs. UPCR values were obtained using three analyzers. Bland-Altman and Passing Bablok tests were used to analyze agreement between the UPCR values. Urine samples were classified as normal or proteinuria based on the UPCR values obtained by each analyzer and concordance in the classification evaluated with Cohen's kappa coefficient. Results: Passing and Bablok regression showed that there were proportional as well as constant difference between UPCR values obtained by a dipstick reading device and those obtained by the other analyzers. The concordance in the classification of proteinuria was very high (κ = 0.82) between the automated wet chemistry analyzer and in-house dry chemistry analyzer, while the dipstick reading device showed moderate concordance with the automated wet chemistry analyzer (κ = 0.52) and in-house dry chemistry analyzer (κ = 0.53). Conclusions: Although the urine dipstick test is simple and a widely used point-of-care test, our results indicate that UPCR values obtained by the dipstick test are not appropriate for clinical use. Inter-instrumental variability may affect clinical decision process based on UPCR values and should be emphasized in veterinary practice.

Concordance Rate Between the Ratings of Clinician and Self Ratings of Worker on a Functional Capacity Evaluation

  • Choi, Bong-sam
    • 한국전문물리치료학회지
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    • 제23권4호
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    • pp.71-80
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    • 2016
  • Background: Functional capacity evaluations (FCEs) are designed to systematically assess the capacity to perform work-related tasks and to determine worker's ability to return to the previous job following work-related injuries. These evaluations may be rated either by clinician or worker. There has been a lack of consensus between the two scoring methods. Objects: This study aimed: 1) to confirm if the data are fit to the Rasch rating scale model and 2) to investigate the item-level concordance rate between the ratings of clinician and injured worker of the FCE. Methods: A cross-sectional study was conducted with a sample (n=124) of a rehabilitation program with the Occupational Rehabilitation Data Base for workers with low back pain. The functional capacity evaluation at admission and discharge was administered to clinicians and workers. The data were analyzed using both classical test theory-based Pearson's r and intra-class coefficient followed by item-level analysis with Rasch rating scale model. Results: All items of the FCE, except sitting items rated by clinician at admission and handling items rated by both clinician and worker throughout admission and discharge, were acceptable fit statistics with minor out of ranges for a misfit criterion. This may indicate that the items of the FCE overall fit to the Rasch rating scale model. Few problematic items responding differently to clinician and worker both at admission and discharge were detected with the differential item functioning analysis despite the excellent concordance rate using the two conventional statistics-sitting and handling items at admission and handling item at discharge. Conclusion: The item-level speculations using Rasch analysis of the FCE demonstrate that the ratings of clinician and self ratings of worker were psychometrically acceptable though there was an apparent discrepancy between the raters both at admission and discharge.