• 제목/요약/키워드: significance testing

검색결과 411건 처리시간 0.036초

특정 수강집단 학생들과 아건강 설문지 응답과의 통계적 분석 (Statistical analysis on a specific student group and their responses to sub-health questionnaire)

  • 신재경
    • Journal of the Korean Data and Information Science Society
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    • 제26권4호
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    • pp.895-906
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    • 2015
  • 현대인들은 건강과 삶의 질에 많은 관심을 가지고 있다. 건강 관련 TV 프로그램을 통해 어떤 질병에 대해 치료 효과가 있다는 음식들이 여러 전문가들의 입에서 소개가 되고 있다. 또한, 이런 음식들이나 의학과 관련한 연구들이 많이 발표되고 있는 실정이다. 이에 본 연구에서는 우리들의 일상생활 속에서 어떤 질병의 예후를 미리 알 수 있다면 병으로 고통 받지 않고 더 좋은 삶을 즐길 수 있을 것으로 생각이 되어 특정 수강 집단 학생들을 대상으로 이와 관련된 아건강 설문지를 통해 그 결과를 통계적으로 분석해보았다. 그 결과 성별과 10개의 진단지표의 동일성 검정 결과는 호흡기만 제외하고 나머지 9개의 진단지표는 유의수준 5%에서 유의한 차이가 있는 것으로 나타났다. 또한, 연령과 10개의 진단지표의 동일성 검정 결과는 10개의 모든 진단지표는 유의수준 5%에서 유의한 차이가 없는 것으로 나타났다. 이는 대학이라는 특정 집단의 수강 학생들을 대상으로 조사하였기 때문에 연령대를 2개의 범주로 나누었지만 20대라는 하나의 범주로도 생각할 수 있기 때문으로 판단된다.

Study on The Customer Service of Hospitals and Clinics According to Franchised Form or Not

  • Lee, Kyung-Soo;Nam, Seok-Woo;Choi, Young-Soo
    • 한국임상보건과학회지
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    • 제2권2호
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    • pp.148-157
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    • 2014
  • Purpose. This study compares and analyzes customer service on customer satisfaction and customer royalty on customer satisfaction targeting the customers visiting a hospital or a clinic which is franchised or not. And it aims at helping business rationalization for a medical institution. Methods. This paper conducts a survey and selects a sample of 670 customers except the missing value targeting the customers of 4 primary health care institutions and 4 bigger health care institutions in Seoul and Gyeonggi province. It conducts frequency analysis for the purpose of investigating the respondents' generic characteristic and factor of their medical institution selection, and factor analysis, reliability analysis and regression analysis for the hypothesis testing. Results. The first hypothesis testing result is significant in level of significance of 0.01. The second one is the same as the first one, but the dummy variable shows a negative regression coefficient(-0.479). The third one is significant in level of significance of 0.01, but the forth one is not significant. And the respondents prioritize website(Home page) and convenience in use of a hospital procedure for selecting a hospital or a clinic. Conclusions. The additional analysis finds that the franchised group has more satisfaction than none franchised group. But in case of their royalty, the average of franchised and none franchised groups are not significantly different. Therefore, the results of this paper reveal to support the results of the advanced researches.

쑥뜸치료가 암환자의 심박변이도에 미치는 영향 (The Effects of Moxibustion on Heart Rate Variability in Cancer Patients)

  • 김옥희;최정은;윤정원;유화승
    • 대한암한의학회지
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    • 제16권1호
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    • pp.15-31
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    • 2011
  • Objective : The study aims to investigate the effect of moxibustion treatments on autonomic nervous system function of cancer patients through the evaluation of heart rate variability (HRV) biofeedback testing. Materials and Methods : Six cancer patients from inpatient care unit of Dunsan Oriental Hospital, Daejeon University were given three moxibustion treatment sessions every other day over one week period on five Oriental Medicine meridian points CV4, CV6, CV12, KD1, and PC8. HRV biofeedback was conducted before and after each treatment sessions. Three areas of analyses were done from the test conducted; Time Domain Analysis, Frequency Domain Analysis and Autonomic Nervous System (ANS) balance analysis. Results : Time Domain Analysis has shown increased Standard Deviation of all Normal R-R Intervals (SDNN), and decreased Mean Heart Rate and Physical Stress Index (PSI) levels, with statistical significance (P<0.05). In Frequency Domain Analysis, series of moxa treatments have increased Total Power (TP), Very Low Frequency Oscillation Power (VLF), High Frequency Oscillation Power (HF), normalized HF values while decreasing Low Frequency Oscillation Power (LF), normalized LF and LF/HF ratio with statistical significance (P<0.05). The values of ANS activity, ANS balance, Stress resistance, Stress index, have also shown significant changes. For cardiac stability stroke volume power (SP) and Blood Vessel Tension (BVT) were followed, which were both increased after treatment. All changes were statistically significant (P<0.05). Conclusion : The results have shown a positive correlation between the moxibustion treatments and autonomic nervous system responses on cancer patients through the HRV biofeedback testing. This study suggests possible application of moxibustion treatments for managing ANS functions of cancer patients, although additional studies with larger population are necessary to confirm the data.

소변검사의 재검 시 세포원심분리법과 액상세포검사 $ThinPrep^{(R)}$의 효율성에 관한 비교 (Comparision of Effectiveness between the $ThinPrep^{(R)}$ and the Cytospin Preparations of the Repeated Urine Cytology)

  • 김현경;표주연;이윤희;정우희;김세훈;홍순원
    • 대한세포병리학회지
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    • 제18권1호
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    • pp.55-61
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    • 2007
  • Once diagnosed as "cell paucity"or "atypia" by the cytospin (CS) preparation, this CS preparation does not secure a precise diagnosis by repeated testing alone. Although the ThinPrep (TP) preparation is acknowledged to show increased cellularity, performing the screening tests for the cases that have enough cellularity, according to CS, raises issues for the cost-effectiveness. To obtain a more precise diagnosis through increasing the cellularity by performing TP, we selected the cases that were diagnosed as "cell paucity" or "atypia" by CS, but they required a more precise diagnosis, and the samples were processed via both CS and TP to compare the results. 11 patients diagnosed as "cell paucity" and 22 patients diagnosed as "atypia" by CS participated in this study. When the detection rate of atypical cells in both preparations with repeated urine cytology was compared, the overall detection rate of TP (16cases, 48.5%) was superior than that of CS (11cases, 33.3%), with statistical significance. The cellularity of both preparations was compared on repeated urine cytology; the general cellularity of TP (29cases, 87.9%) was higher than that of CS (20cases, 60.6%), but there was no statistical significance. Particularly, we repeated the TP for the 1 case that was diagnosed as "atypia" and we performed polyoma virus immunohistochemical staining, which confirmed polyoma virus. In conclusion, we can avoid obtaining negative diagnosis from cases with uncertain "atypia" or "cell paucity" by performing repeated TP testing.

지식.정보화시대에 요구되는 국가기술자격 검정방법 도입을 위한 연구 - 기능장, 기사, 산업기사, 기능사를 중심으로 - (Introduction to Improve for Testing Method of National Technology Qualification to Meet Demands From the era of Knowledge & Information)

  • 조정윤;박종성;김덕기;김현수
    • 공학교육연구
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    • 제4권1호
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    • pp.57-78
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    • 2001
  • 이 연구는 지식 정보화 시대에 인적자원을 효과적으로 개발 선도하도록 국가기술자격제도에 있어서 검정방법을 개선하는데 목적이 있다. 이 연구의 목적을 달성하기 위해 국가기술자격 검정방법의 변천내용과 방향의 적합성에 대해서 살펴보았으며, 주요국의 검정방법과 국내 외 컴퓨터화된 검정방법의 적용실태를 분석하였다. 아울러 현재 국가기술자격 기능장, 기사, 산업기사, 기능사 검정방법의 문제점과 검정인프라의 문제점을 알아보았다. 이를 바탕으로 검정방법의 개선 방안과 이를 위한 검정 인프라 구축 방안을 제시하였다. 연구방법으로 관련자료의 수집 및 분석, 4차에 걸친 전문가 협의회 개최, 국가기술자격 검정방법 실태 및 요구분석을 위하여 기능장, 기사, 산업기사, 기능사 자격취득자를 대상으로 2,500명을 대상으로 설문 조사를 실시하여 의견을 수렴하였다. 이상의 연구를 통해 기능장, 기사 산업기사 기능사 검정방법의 개선 방안, 제도적인 면과 운영적인 측면에서의 검정 인프라 구축 방안에 대해서 살펴보았다.

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폐결핵 진단 시 중합효소연쇄반응검사 반복 시행의 의의 (Significance of Repeated Polymerase Chain Reaction (PCR) Testing for Diagnosis of Pulmonary Tuberculosis)

  • 김수옥;김윤희;지수영;반희정;오인재;권용수;김규식;김유일;임성철;김영철
    • Tuberculosis and Respiratory Diseases
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    • 제68권6호
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    • pp.345-349
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    • 2010
  • Background: The polymerase chain reaction (PCR) test is important for the confirmatory diagnosis of tuberculosis (TB) caused by Mycobacterium tuberculosis. The aim of this study was to analyze the yield of repeated PCR testing in patients with confirmed pulmonary TB. Methods: The medical records of 130 patients, who had more than two consecutive PCR tests and a M. tuberculosis-positive sputum culture from August, 2006 to December, 2007, were retrospectively reviewed for the purposes of this study. A positive TB-PCR test was defined as at least one positive test result. Results: The cumulative positive PCR test rate was 80% (104/130), with gradually increasing rates of positive findings upon the first, second and third TB-PCR tests with 52.3%, 68.5% and 75.4%, respectively. However, further testing did not increase the positive rate further. Conclusion: Repeated PCR testing at least three times for M. tuberculosis is helpful for diagnosis of pulmonary TB.

트윗 데이터를 이용한 황사 관련 질병 유의성 분석 (Significance Analysis of Yellow Dust Related Disease Using Tweet Data)

  • 정용한;서민송;유환희
    • 지적과 국토정보
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    • 제47권1호
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    • pp.267-276
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    • 2017
  • 우리나라는 황사로 인해 농업 및 산업분야, 시민건강 등 다양한 분야에 걸쳐 피해가 발생되고 있으며 이에 대한 대책 마련이 시급한 실정이다. 이에 본 연구에서는 2009년 이후 최대 황사가 나타났던 2015년 2월 23일을 기준으로 전후 11일간의 황사 관련 트윗 데이터를 수집하고, 이슈어 분석, 건강과 관련된 트윗 데이터 그룹 재구성, 질병과의 연관규칙 분석 등을 걸쳐 황사발생과 관련 질병의 유의성을 검정한 결과 다음과 같은 결론을 얻었다. 황사관련 트윗 데이터로부터 도출된 질병과 건강보험심사평가원에서 취득한 환자실태 자료를 종합하여 비염, 천식, 결막염 환자에 대한 유의성 검정을 실시한 결과, 유의확률 5%에서 결막염은 16개 시 도 중 13개 지역에서 유의하게 나타났으며, 비염은 6개 지역에서, 천식은 3개 지역에서 질병 발생에 유의한 것으로 나타났다. 이상과 같이 트윗 데이터와 같은 SNS데이터로 부터 시민들의 건강에 대한 정보를 취득할 수 있었으며, 이를 활용한 시민건강 관리 대책을 수립하는데 유용한 정보를 제공해 줄 수 있을 것으로 판단된다.

주의력결핍과잉활동 장애의 평가 (ASSESSMENT OF CHILDREN WITH ATTENTION DEFICIT HYPERACTIVITY DISORDER)

  • 오경자
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • 제1권1호
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    • pp.65-76
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    • 1990
  • 주의력결핍-과잉활동장애(ADHH)는 그 행동적 특징이 정상아동들간에도 흔히 나타날 수 있는 것으로 정상적 발달과정에서 나타나는 현상과의 구별이 어려운 경우가 있어 증상의 심각도를 양적수치로 평가하는것과 아울러 함께 각 연령별 규준에 비추어 판단하는 객관적 평가방법이 필요하다. 또한 ADHD의 증상은 상황에 따라, 그리고 사회적 맥락에 따라 나타나는 양상이 크게 다를수도 있어 가능한한 다양한 상황에서의 행동을 여러 평가자로부터 평가받아 이를 통합하는 과정이 필요하다. 구체적으로 부모 및 환아와의 면담, 각종 행동평가 척도, 행동의 관찰, 그리고 심리검사등 ADHD를 평가할 때 사용할 수 있는 방법 및 척도들이 논의되었으며, 평가의 목적에 따라 적절한 도구를 선택하여 활용하는 체계적이고 종합적인 평가의 중요함이 강조되었다.

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공공사업 경쟁입찰에서 낙찰자 결정방법분석 및 국방획득사업의 합리적인 사업자결정 방안 (Contract Awarding Process and its Reasonable Improvement for Defense Acquisition)

  • 어하준;김성철
    • 한국IT서비스학회지
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    • 제14권2호
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    • pp.69-86
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    • 2015
  • The current contract awarding process regulated by laws and ordinances is analyzed and more reasonable processes are suggested. To this end, the principle of economic analysis is described with emphasis on the cost-effectiveness analysis, and the laws and ordinances regulating the process are thoroughly examined. The current contract awarding rule is based on the weighted sum of effectiveness score and cost score. This may not conform to the framework of economic analysis where effectiveness is supposed to be measured as an output and cost measured as an input. An improvement is attempted to the defense acquisition system and it is recognized that the economic analysis and policy consideration should be performed separately. Concept of statistical testing is introduced to see if the results of the cost effectiveness analyses show the significant difference between the alternatives. It is suggested that the contract awarding process can be improved by performing significance test followed by the aggregation of the two analyses. A minor improvement is also suggested on the application of current rules.

PREDICTION OF THE DETECTION LIMIT IN A NEW COUNTING EXPERIMENT

  • Seon, Kwang-Il
    • 천문학회지
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    • 제41권4호
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    • pp.99-107
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    • 2008
  • When a new counting experiment is proposed, it is crucial to predict whether the desired source signal will be detected, or how much observation time is required in order to detect the signal at a certain significance level. The concept of the a priori prediction of the detection limit in a newly proposed experiment should be distinguished from the a posteriori claim or decision whether a source signal was detected in an experiment already performed, and the calculation of statistical significance of a measured source signal. We formulate precise definitions of these concepts based on the statistical theory of hypothesis testing, and derive an approximate formula to estimate quickly the a priori detection limit of expected Poissonian source signals. A more accurate algorithm for calculating the detection limits in a counting experiment is also proposed. The formula and the proposed algorithm may be used for the estimation of required integration or observation time in proposals of new experiments. Applications include the calculation of integration time required for the detection of faint emission lines in a newly proposed spectroscopic observation, and the detection of faint sources in a new imaging observation. We apply the results to the calculation of observation time required to claim the detection of the surface thermal emission from neutron stars with two virtual instruments.