• 제목/요약/키워드: Latent Factor Model

검색결과 124건 처리시간 0.024초

혈액투석환자의 삶의 질 구조모형 (A Structural Equation Model on Quality of Life in Hemodialysis Patients)

  • 강승자;서남숙
    • 한국산학기술학회논문지
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    • 제20권7호
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    • pp.589-598
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    • 2019
  • 본 연구의 목적은 혈액투석환자의 삶의 질에 영향을 미치는 요인들을 직접 및 간접적으로 유의한 경로를 파악하고자 하는 구조방정식 모형구축 연구이다. 연구방법으로 대상자는 G광역시와 M시 지역에 소재한 혈액투석 전문센터에서 치료를 받고 있는 환자 230명을 선정하였고, 최종적으로 분석에 이용한 대상자 수는 201명이었다. 자료수집 기간은 2014년 2월 1일부터 3월 31일까지였으며, 자가보고식 설문지로 구성된 연구도구를 사용하여 수집하였다. 자료분석은 SPSS WIN 18.0을 이용하여 대상자의 일반적 특성, 변수에 대한 서술적 통계, 상관관계 및 연구도구의 신뢰도를 분석하였고, AMOS 18.0 프로그램을 이용하여 잠재변수의 확인적 요인분석, 가설적 모형의 적합도 및 가설을 검증하였다. 연구결과 수정모형의 적합도는 카이제곱 = 41.32, GFI = .96, AGFI = .92, RMR = .04, NFI = .96, CFI = .91, TLI = .95로 나타나 가설적 모형보다 적합도가 크게 개선되어 설정한 22개의 연구가설 중 12개가 통계적으로 유의하게 지지되었다. 본 연구에서 결론은 자기효능감, 우울, 자가간호행위가 혈액투석환자의 삶의 질에 직접적인 영향을 주었으며, 수면장애, 스트레스, 피로, 가족지지는 간접적으로 영향을 미치는 것으로 나타났다. 이들 변수들의 삶의 질에 대한 설명력은 58.6%였다. 혈액투석환자의 삶의 질을 향상시키기 위해서는 대상자의 우울을 우선적으로 관리하고 자기효능감의 증진을 통해 자가간호행위를 실천할 수 있는 간호중재가 이루어져야 할 것이다.

평생교육에 대한 공유기대가치 연구 (Shared Value Expectation on Lifelong Education)

  • 김철호
    • 디지털융복합연구
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    • 제13권12호
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    • pp.325-336
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    • 2015
  • 본 연구의 목적은 평생교육에 대한 이용자의 공유기대가치 구성 요소를 융복합적 측면에서 접근, 정량적으로 확인하는데 있다. 선행연구 검토와 심층인터뷰 및 설문조사 실시 등, 2차 자료 수집과 1차 자료 수집, 그리고 정량적 정성적 방법론을 동시에 실시한 결과, 평생교육에 대한 이용자의 공유기대가치 구성요소는, 10개 관점, 27개 구성개념, 81개 측정 항목으로 정리되었다. 확인적 요인분석 결과, 잠재적 측정모델은 적합한 것으로 확인되었고, 구성요인에 대한 개념타당성, 수렴타당성, 내적일관성 및 구성 개념 간의 판별타당성 등도 적절한 것으로 나타났다. 연구결과로 정리된, 평생교육에 대한 이용자의 공유기대가치 구성요소는 융복합적 측면을 바탕으로 평생교육에 대한 이용자의 다양한 기대가치를 보여주는 바, 본 연구는 이론의 학제적 구축 측면에서, 다양한 분야로부터 평생교육에 대한 이용자의 공유 기대가치를 체계적으로 파악하는데 기여할 것으로 판단되며, 전략적 측면에서, 평생교육의 기획 관리 운영에서 이용자 욕구의 범주화 된 파악과 이에 상응하는 프로그램의 기획 개발에 기여할 것으로 판단되며, 관리적 측면에서, 평생교육 이용자의 공유기대가치에 대한 효과의 정량적 파악에 현실적인 도움을 줄 것으로 판단된다.

부정적 정서 유통에 따른 대인관계 문제의 영성효과: 트라우마를 중심으로 (Spirituality's Impact on Posttraumatic Interpersonal Relation Regarding the Distribution of Negative Affect)

  • 이은성;최충익
    • 유통과학연구
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    • 제17권5호
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    • pp.103-111
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    • 2019
  • Purpose - This paper aims to examine a spirituality's impact on the posttraumatic interpersonal relationships of family violence with a structural equation model(SEM). This article starts with the research idea that family violence experience bring about negative emotion in terms of interpersonal relationship leading to the distribution of negative affect in social relationship. The research question of this study pinpoints on how family violence experience affects interpersonal relationship problems and how spirituality affects interpersonal relations problems. Based on the idea, we attempts to deal with spirituality's impact as a driving factor of transforming the distribution of negative affect. Research design, data, and methodology - The structural equation modelling(SEM) is employed as a analysis method of this study. SEM provides a chiefly cross-sectional statistical modelling method, and moreover it allows multiple variables to be associated with a latent variable in this analysis. 300 samples from Seoul, Gyeonggy and Gangwon are selected in the survey. We chose available 271 among them. Results - The results verify that trauma have placed an negative impact on personal relations. The study results also shows that the more serious get the degree of family violence trauma, the worse become interpersonal relationship problems. What is more interesting is that the degree of trauma's impact on interpersonal relation problems in male is higher than that of trauma's impact in female. It is mainly attributed to the fact that women are superior to men in terms of empathy ability and interpersonal relationship orientation. It can be noted that the well-managed spirituality will be able to make a great contribution towards reducing the degree of trauma caused by interpersonal relationships. Conclusions - The study results demonstrates that family violence have negative impacts on spirituality, while spirituality have an positive impacts on reduction the problems of interpersonal relationship. It has been found out that family violence trauma may cause negative affectivity in personal relations, which can distribute negative impacts regarding interpersonal relationship in society. This study also supports that spirituality will be able to function well as a helper, which may reduce the distribution of negative affect in society.

1인 가구의 건강한 식생활역량-식사행태와 식생활라이프 스타일을 중심으로 (Healthy Eating Capability of One-person Households-The Effects of Eating Alone, Meal Types, and Dietary Lifestyles)

  • 이성림;최일숙;김정훈
    • Human Ecology Research
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    • 제58권4호
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    • pp.483-496
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    • 2020
  • This study examined the effects of eating alone, meal type, and dietary lifestyles on healthy eating capability of one-person households. We analyzed the mediation effects of weekly frequencies of each meal type taken by one-person households between eating habits such as eating alone and dietary lifestyles of one-person households and healthy eating capability. We also analyzed data from the 2019 Food Consumption Behavior Survey using a sample of 688 one-person households. Factor analysis, latent profile analysis, structural equation model analysis was conducted; direct and indirect effects of independent variables were tested using bootstrap method. The major results were as follows. Frequency of eating alone was about 10 times a week on average; one-person households had home-made meals about 12 times a week, for restaurant meals, 4 times, for delivered/take-out food, 0.39 times, and for other types, 0.44 times. Weekly frequencies of eating alone and meal types taken by one-person households were significantly different among the different socio-demographic groups. Dietary lifestyle was classified into four classes: traditional, health ignorant, food lifestyle ignorant, and balanced. Eating alone and dietary lifestyle had a significant effect on weekly frequency of each meal type. Frequencies of eating alone, balanced dietary lifestyle, and taking home-made meals had a positive direct effect on healthy eating capability, and frequency of taking delivered or take-out food and food consumption ignorant lifestyle had a negative direct effect. Eating alone, balanced and traditional dietary lifestyles had a positive indirect effect through the meal type; however, watching Mug-bang had a negative indirect effect.

고등학생의 건강 불균등 요인별 분해 (Decomposition of Health Inequality in High School Students)

  • 안병철;정효지
    • 한국학교보건학회지
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    • 제20권1호
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    • pp.63-75
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    • 2007
  • Purpose: With economic development and prolonged longevity, the level of health and health disparities have became growing concerns for individual and society as well. Since youth's health status are influenced by households' socioeconomic status and associated with heath status in later stage of life, assessing health inequality in the youth is a significant step toward lessening health disparity and promoting health. We measured health inequality in high school students and decomposed it into health factors. Methods: The subjects included 3,787 high school students of 12th graders from the Korea Education and Employment Panel (KEEP) in 2004. True health status was assumed as a latent variable and estimated by ordered logistic regression model. The predicted health was used as a measure of individual health after rPSraling to [0,1] interval. Total health inequality was then measured by Gini coefficient and was decomposed into health factors. Results: Health inequality in high school students was observed. Of total health inequality, 44% was explained by biological factors such as body mass index (BMI) (32.5%) and gender (13.5%). Behavioral factors such as smoking, drinking, physical activity, hours in bed and hours of computer ussge added to 11.7%. Household income and work experiences explained 5.6% and 8.8%, respectively. School satisfaction explained 14.6%. Other school related factors such as self-assessed achievement and experience of being bullied accounted for 15.5%. Conclusion: Among the health factors, biological factor was the most important contributor in health disparity. Other factors such as health behaviors, socioeconomic factors, school satisfaction and school related factors exhibited somewhat similar magnitude. For policy purposes, it is recommended to look into modifiable factors depending BM, gender and school surroundings.

건강 관련 커뮤니티 시설 특성 유형화 및 거래가격과의 관계 (Health-related Community Facility Characteristics Typification and Relationship to Transaction Prices)

  • 최원준
    • 한국콘텐츠학회논문지
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    • 제22권8호
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    • pp.358-366
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    • 2022
  • 최근 아파트 시장에서 가장 많은 선택 요인으로 부각되고 있는 것이 '아파트 커뮤니티 시설'이며 그 수준이 매우 중요해지고 있다. 이에 본 연구는 국내 주요 아파트 단지 300세대 이상, 126곳을 대상으로 건강 관련 커뮤니티 시설을 중심으로 잠재 프로파일 분석을 통해 각 유형을 도출하였으며, 분석 결과 필라테스 집단, GX 및 요가집단, 골프 및 탁구연습장 집단, 전반적 저집단 총 4집단으로 구분됨을 확인하였다. 4집단 중 필라테스 집단과 GX 및 요가집단은 골프 및 탁구연습장이 많은 단지에 비해 강남, 서초, 송파 등에 속할 가능성이 높음과 동시에 거래가격 역시 가장 높은 것으로 분석되었다. 이러한 분석결과를 통해 커뮤니티 시설을 구성할 때 여가활동 선호의 시대적 변화를 반영해야 한다는 점, 청년주택 등에서의 피트니스 시설에 대한 높은 선호도를 감안하여 주거복지정책에서도 건강 관련 커뮤니티 시설 제공 계획을 깊게 고려해야 한다는 점 등을 제언하였다.

유통서비스 기업의 공급사슬 운영성과 경로에서 파트너 관계자산의 역할 (The Role of Relational Capital in Supply Chain Management for Distribution Service Firms)

  • 조연성
    • 유통과학연구
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    • 제13권11호
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    • pp.111-121
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    • 2015
  • Purpose - This study's purpose is to investigate the impact of supply chain management (SCM) factors among targeted Korean distribution firms. Antecedents are established for supply chain orientation (SCO) for the management and organization of cultural assets. The research sets up SCO corresponding to management cultural assets and to organizational factors in the results. The research model is created to examine the SCO based on a strategic perspective and the operational performance of the SC and SCM. In addition, an integrated model is constructed to analyze the moderating effect by setting partner cooperation as a relational capital factor. The main aim of this study is to analyze the characteristics of the supply chain structure as a source of competitive advantage for distribution service firms participating in the supply chain. In the moderating effects analysis, the role of partner cooperation as relational capital is examined in detail. Research design, data, and methodology - The study examined the existing research related to supply chains, discussing the antecedents of the performance of SCM and SCO. SCM was established with the partner's cooperation as relational capital. Including the moderating effects of the partner cooperation, the research proposed a seven hypotheses path analysis model. The samples were collected from the Korean export enterprises in the distribution service sector, with 185 samples selected for the final analysis. To try and measure the four latent variables presented in the analysis model based on existing studies, 22 measurement items were used. The empirical analysis used the appropriate PLS (partial least squares) method on the path analysis reliability and validity and for common method bias. After testing the seven hypotheses, the research tested the moderating effects to the path analysis. Using PLS as structural equation modeling, the seven hypotheses were tested including the moderating effects of the partner relational capital on the 185 samples. Results - In the results, the SCO had a positive impact on both SCM and the relational capital of partner cooperation. The SCM had a significant impact on the operational performance of the SC. Further, partner cooperation also had a significant impact on SCM and the operational performance of the SC. The moderating effect analysis of the SCM and partner cooperation found a significant impact on the operational performance of the SC. On the other hand, the moderating effect of the SCO and partner cooperation did not affect the SCM. Conclusion - The results of this research show that the existing supply chain-related research can be applied to the operational performance of the SC for a Korean distribution service firm. In view of the fact that SCO is a source of competitive advantage, it should be taken into account when a firm wants to improve the performance of the SCM of the distribution service. This is because it can be assumed that SCO plays a role in supply chain management for the distribution firm.

치과위생사의 커뮤니케이션 기술 측정을 위한 평가 도구의 타당도와 신뢰도 (Validity and Reliability of the Assessment Tool for Measuring Communication Skills of Dental Hygienist)

  • 문학진;이수영;임순연
    • 치위생과학회지
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    • 제14권2호
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    • pp.198-206
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    • 2014
  • 1. 커뮤니케이션 기술 측정도구 38문항을 번역한 후 번역 정확도, 내용분석, 내용타당도 분석을 통하여 14문항을 수정하고, 10문항을 삭제하였으며, 팀 구성원 커뮤니케이션 4문항은 연구목적에 맞지 않아 제외하여 최종 커뮤니케이션 기술 측정도구는 총 24문항으로 구성되었다. 2. 수정 보완된 커뮤니케이션 기술 측정도구의 요인분석 결과 치과위생사의 커뮤니케이션 기술은 배려와 존중, 정보 제공, 불안과 통증 감소를 위한 커뮤니케이션 등 3개의 항목으로 구분되었다. 3. 확인적 요인분석을 통한 모형의 적합도는 대체로 기준을 충족하였으며 ($X^2=899.170$ [df=227, p<0.001], RMR=0.025, RMSEA=0.078, IFI=0.886, TLI=0.872, CFI= 0.886, GFI=0.848, AGFI=0.815, NFI=0.853) 모든 요인의 개념신뢰도, 분산추출지수가 일반적 기준을 충족시켜 집중타당성이 입증되었다. 모든 요인의 평균분산추출값은 각 요인간상관 관계 제곱값보다 크게 나타나 판별타당성도 입증되었다. 4. 내적일관성을 알아보기 위한 Cronbach's ${\alpha}$는 0.8 이상으로 높은 신뢰수준으로 나타났다. 이상의 결과를 종합해 보았을 때, 치과위생사의 커뮤니케이션 측정도구는 타당도와 신뢰도가 높고 적합하다고 검증되었다. 향후 우리나라 치과위생사의 커뮤니케이션 기술의 전문적인 발전과 연구에 활용되어 궁극적으로 환자 구강건강 증진 및 병원 경영에 도움을 줄 수 있을 것으로 생각된다.

프로야구 코치-선수관계 유지 척도 재검증 (Reexamination of Coach-Athlete Relationship Maintenance Scale in Pro Baseball)

  • 허진영;최헌혁
    • 한국체육학회지인문사회과학편
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    • 제55권1호
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    • pp.221-233
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    • 2016
  • 본 연구는 Rhind & Jowett(2012)이 개발한 코치-선수관계 유지 척도(CARM-Q)를 국내 프로 스포츠 상황에서 활용될 수 있도록 프로야구 코치-선수관계 유지 척도를 재검증하는 것이다. 1차 예비조사는 2014년 국내 프로야구 1군에 등록된 프로야구 코치(29명)와 선수(103명) 총 132명을 대상으로 코치-선수관계 유지에 대한 자료를 수집하였다. 수집된 자료는 최대우도추정법을 사용하여 잠재적 기본구조를 확인하였다. 코치-선수관계 유지 척도의 타당도를 검증하기 위해 최종 273명(코치 62명과 선수 211명)을 연구대상자로 선정하였다. SPSS 18.0과 AMOS 16.0 프로그램을 이용하여 탐색적 요인분석(EFA), 확인적 요인분석(CFA), 내적일관성, 검사-재검사 신뢰도 분석 그리고 상관관계 분석을 통해 6요인 25문항 프로야구 코치-선수관계 유지 척도가 완성되었다. 분석결과 6요인으로 구성된 한국형 프로야구 코치-선수관계 유지 척도가 재검증되었다. 전반적으로 본 연구에서 확인된 프로야구 코치-선수관계 유지 척도를 다 집단 분석을 통해 드림과 나눔 팀, 또는 1군과 2군 간 경로의 차이를 비교하여 결과를 제공해 보는 것도 의미가 있을 것이다.

국내 MIS 연구에서 구조방정식모형 활용에 관한 메타분석 (A Meta Analysis of Using Structural Equation Model on the Korean MIS Research)

  • 김종기;전진환
    • Asia pacific journal of information systems
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    • 제19권4호
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    • pp.47-75
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    • 2009
  • Recently, researches on Management Information Systems (MIS) have laid out theoretical foundation and academic paradigms by introducing diverse theories, themes, and methodologies. Especially, academic paradigms of MIS encourage a user-friendly approach by developing the technologies from the users' perspectives, which reflects the existence of strong causal relationships between information systems and user's behavior. As in other areas in social science the use of structural equation modeling (SEM) has rapidly increased in recent years especially in the MIS area. The SEM technique is important because it provides powerful ways to address key IS research problems. It also has a unique ability to simultaneously examine a series of casual relationships while analyzing multiple independent and dependent variables all at the same time. In spite of providing many benefits to the MIS researchers, there are some potential pitfalls with the analytical technique. The research objective of this study is to provide some guidelines for an appropriate use of SEM based on the assessment of current practice of using SEM in the MIS research. This study focuses on several statistical issues related to the use of SEM in the MIS research. Selected articles are assessed in three parts through the meta analysis. The first part is related to the initial specification of theoretical model of interest. The second is about data screening prior to model estimation and testing. And the last part concerns estimation and testing of theoretical models based on empirical data. This study reviewed the use of SEM in 164 empirical research articles published in four major MIS journals in Korea (APJIS, ISR, JIS and JITAM) from 1991 to 2007. APJIS, ISR, JIS and JITAM accounted for 73, 17, 58, and 16 of the total number of applications, respectively. The number of published applications has been increased over time. LISREL was the most frequently used SEM software among MIS researchers (97 studies (59.15%)), followed by AMOS (45 studies (27.44%)). In the first part, regarding issues related to the initial specification of theoretical model of interest, all of the studies have used cross-sectional data. The studies that use cross-sectional data may be able to better explain their structural model as a set of relationships. Most of SEM studies, meanwhile, have employed. confirmatory-type analysis (146 articles (89%)). For the model specification issue about model formulation, 159 (96.9%) of the studies were the full structural equation model. For only 5 researches, SEM was used for the measurement model with a set of observed variables. The average sample size for all models was 365.41, with some models retaining a sample as small as 50 and as large as 500. The second part of the issue is related to data screening prior to model estimation and testing. Data screening is important for researchers particularly in defining how they deal with missing values. Overall, discussion of data screening was reported in 118 (71.95%) of the studies while there was no study discussing evidence of multivariate normality for the models. On the third part, issues related to the estimation and testing of theoretical models on empirical data, assessing model fit is one of most important issues because it provides adequate statistical power for research models. There were multiple fit indices used in the SEM applications. The test was reported in the most of studies (146 (89%)), whereas normed-test was reported less frequently (65 studies (39.64%)). It is important that normed- of 3 or lower is required for adequate model fit. The most popular model fit indices were GFI (109 (66.46%)), AGFI (84 (51.22%)), NFI (44 (47.56%)), RMR (42 (25.61%)), CFI (59 (35.98%)), RMSEA (62 (37.80)), and NNFI (48 (29.27%)). Regarding the test of construct validity, convergent validity has been examined in 109 studies (66.46%) and discriminant validity in 98 (59.76%). 81 studies (49.39%) have reported the average variance extracted (AVE). However, there was little discussion of direct (47 (28.66%)), indirect, and total effect in the SEM models. Based on these findings, we suggest general guidelines for the use of SEM and propose some recommendations on concerning issues of latent variables models, raw data, sample size, data screening, reporting parameter estimated, model fit statistics, multivariate normality, confirmatory factor analysis, reliabilities and the decomposition of effects.