• Title/Summary/Keyword: ${\chi}^2$-test

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The Effects of the Tai Chi Exercise on Metabolic Syndrome and Health-related Quality of Life in Middle-aged Women (타이치 운동이 중년여성의 대사증후군 위험인자 및 건강관련 삶의 질에 미치는 영향)

  • Eom, Ae-Yong
    • Journal of muscle and joint health
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    • v.19 no.2
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    • pp.152-160
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    • 2012
  • Purpose: The purpose of this study was to test the effects of the Tai Chi exercise on metabolic syndrome and health-related quality of life in middle-aged women. Methods: A quasi-experimental design was used. Subjects were sixty middle-aged women with metabolic syndrome. All of the subjects were met the criteria of the National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATP III). The subjects were divided into the experiment group (n=33) trained the Tai Chi for 12 weeks and the control group (n=27). Metabolic syndrome risk factors including blood pressure, waist circumference, glucose, triglyceride (TG), and high density lipoprotein cholesterol (HDL-C) were measured before and after the 12-week period. Euro Quality of Life Questionnaire 5-Dimensional Classification (EQ-5D) was used to evaluate the health-related quality of life. Results: The experiment group showed significant decreases in diastolic blood pressure, waist circumference, glucose, and TG; and increase in HDL-C compared to the control group. For the health-related quality of life evaluation, the experiment group showed significant improvement more than the control group. Conclusion: The Tai Chi exercise may be effective intervention in preventing cardiovascular disease caused by metabolic syndrome in middle-aged women.

The Impact of Consumer Ethnocentrism on Purchase Intention: An Empirical Study from Vietnam

  • NGUYEN, Thanh Ngoc Dan;DANG, Phuong Nhu;TRAN, Phu Hoang;NGUYEN, Trang Thi Thuy
    • The Journal of Asian Finance, Economics and Business
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    • v.9 no.2
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    • pp.427-436
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    • 2022
  • Ethnocentrism in users plays an important role in predicting user behavior when deciding between imported and domestic goods. The purpose of this study is to look into the influence of ethnocentrism in customer behavior on brand image, perceived value, perceived quality, brand trust, and brand buy intention. Vietnamese customers prefer homegrown brands. The moderate role of consumer ethnocentrism in the conceptual framework emphasizes the country origin of the product is the most important factor. It also demonstrates how the intention of Vietnamese consumers to buy domestic brands is substantially influenced. To test the hypothesis, this article used a quantitative technique utilizing PLS-SEM software. With 917 samples, the study used the quota sampling approach to collect data from students at 10 universities in Ho Chi Minh City. The data suggest that all players have a positive association and that consumer ethnocentrism has a moderate impact in the Vietnamese brand context. Following that, suggestions are made to help Vietnamese firms create and retain their brands in the face of severe competition from global brands in the domestic market. To increase consumer intent in purchasing behavior, the Vietnamese local company needs to establish a strong brand.

Empirical Comparisons of Disparity Measures for Three Dimensional Log-Linear Models

  • Park, Y.S.;Hong, C.S.;Jeong, D.B.
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.2
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    • pp.543-557
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    • 2006
  • This paper is concerned with the applicability of the chi-square approximation to the six disparity statistics: the Pearson chi-square, the generalized likelihood ratio, the power divergence, the blended weight chi-square, the blended weight Hellinger distance, and the negative exponential disparity statistic. Three dimensional contingency tables of small and moderate sample sizes are generated to be fitted to all possible hierarchical log-linear models: the completely independent model, the conditionally independent model, the partial association models, and the model with one variable independent of the other two. For models with direct solutions of expected cell counts, point estimates and confidence intervals of the 90 and 95 percentage points of six statistics are explored. For model without direct solutions, the empirical significant levels and the empirical powers of six statistics to test the significance of the three factor interaction are computed and compared.

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The Effect of the Taeguk Gi-Gong Exercise on Insulin Resistance and Blood Glucose in Patients with Type II Diabetes Mellitus (태극건강기공이 제 2형 당뇨인의 인슐린저항성 및 혈당에 미치는 효과)

  • Jeong, Ihn-Sook;Lee, Hwa-Ja;Kim, Myung-Hee
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.14 no.1
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    • pp.44-52
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    • 2007
  • Purpose: This study was done to investigate the effect of Tai Chi Qigong exercise program on insulin resistance and blood glucose in patients with type 2 diabetes. Method: This was a quasi-experimental study used a non-equivalent control group pretest-posttest design. Participants included 39 patients with type 2 diabetes mellitus patients (ages between 40-70)(experimental group, 19, control group, 20). The Tai Chi Qigong exercise program consisted of 5 minute warming up, 30-minute main exercise, and 5 minute cooling down, and was conducted twice a week for 10 weeks. The outcome variables were insulin resistance (proinsulin, C-peptide, insulin, insulin sensitivity index) and blood glucose (fasting, post prandial 2hr, HbA1c). Data was analyzed using ANCOVA, with pre-test values as covariates, to examine difference between pre and post measures between the two groups. Results: The Tai Chi Qigong was effective in lowering postprandial 2hr blood glucose. Conclusion: Twice a week 10 week-Tai Chi Qigong exercise seems to be too short to improve insulin excretion or resistance, and fasting blood sugar and HbA1C in patients with type 2 DM. A Tai Chi Qigong program at least 3 times per week or longer is recommended.

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Characteristics of Work-related Musculoskeletal Disorders Compensated by the Industrial Accident Compensation Insurance in Shipbuilding Industry (조선업에서 산업재해로 인정된 근골격계질환의 특성)

  • Kim, Sang Woo;Shin, Yong Chul;Kang, Dongmug
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.15 no.2
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    • pp.114-123
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    • 2005
  • We analyzed the demographic and job features of 197 shipyard workers with work-related musculoskeletal disorders(WMSDs) compensated by the Industrial Accident Compensation Insurance Act, and the features of the disorders, the causes of operation and the induced behaviors. The three shipbuilding companies surveyed were located in Busan Metropolitan city and Gyungsangnam-do. The results were as follows. 1. The ages of WMSDs patients in shipyard were $43.6{\pm}8.6$ and the job tenure was $14.3{\pm}5.6$. The 40's of them was 40.1%, and the 30's was 29.4%. Patients less than 5 year-work duration were 85.3%, and ones more than 16 year-work duration 6.6%. In occupations, welders were 32.5%, pre-welders 17.3%, and setting engineers 6.6%. 2. The causes of WMSDs in shipyard were works(95.4%) and outer crash or accident shock (3.6%). Based on the standard of the NIOSH induced behaviors, the causes were awkward posture (62.9%), excessive movement(19.3%) and repetitive movement(13.7%). 3. The compensated WMSDs by body part was the highest, 36%, in the spines, 32.0% in both the upper limbs and the spines, and 14% in the upper limbs. The number of cases of WMSDs in body were 96 in the cervical, 79 in the lumbar and 72 in the shoulders. 4. As a result of chi-square test(${\chi}^2$) between diagnosis and operation in body, welding and spot welding had the most diagnoses in all parts of the body among other occupations. Chi-square test(${\chi}^2$) between diagnosis and induced behavior in body showed that awkward postures recorded the highest rate and repetitive movements was the second. 5. The most hazardous occupation was the welding(incidence rate=9.7) and the most hazardous behavior was the awkward posture.

Study of Effect on Interpersonal Communication Competence, Self-Efficacy, Social Skill from Nursing Students' Part Time Work Experiences (간호대학생의 아르바이트 경험이 의사소통능력, 자기 효능감, 사회적 기술에 미치는 효과 연구)

  • Sim, In-Ok;Song, Geon-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.7
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    • pp.123-133
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    • 2016
  • The purpose of this study was to examine the part-time work experience of nursing students and its effects on their interpersonal communication competence, self-efficacy and social skills. The study subjects were 362 nursing students in areas S, B, G and G. The relationship between the nursing students' part time work. experience and their general characteristics was analyzed by the Chi-square (${\chi}^2$) test and Fisher's exact test. The interpersonal communication competence originating from the general characteristics, self-efficacy, and difference in the social skills standard among groups were analyzed by the t-test, and analysis of variance (ANOVA). Among the 326 participants, 91.7% had part-time experience and 8.3% had no part-time experience. There was a significant relation between the part-time experience and economic level. Those having a low economic level were more likely to have part time work experience. The interpersonal communication and social skills of the students who had part time work experience when they were middle school students were lower than those who had such experience after high school. Further research is needed to identify precisely the advantages afforded by the part-time work experience of the nursing students.

The Effects of Job Crafting on Work Engagement and Work Performance: A Study of Vietnamese Commercial Banks

  • NGUYEN, Ha Minh;NGUYEN, Cuong;NGO, Trung Thanh;NGUYEN, Luan Vinh
    • The Journal of Asian Finance, Economics and Business
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    • v.6 no.2
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    • pp.189-201
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    • 2019
  • The purpose of this study is to identify elements of job crafting impacts on work engagement and individual work performance in Vietnamese commercial banks. The research data, collected from 226 bank officers, uses the quantitative research tools as: Cronbach's Alpha Analysis, Explanatory Factor Analysis, Confirmatory Factor Analysis as well as Structural Equation Modeling. The results of the hypothesis test show that only two hypotheses (H2, H3) are accepted: the impact of cognitive crafting on work engagement of bank officers (H2) and the impact of work engagement on individual work performance (H3). However, three remaining relationships (H1, H4, H5) are not accepted in the study: the impact of relational crafting on work engagement of bank officers (H1), the impact of relational crafting on individual work performance of bank officers (H4) and the impact of cognitive crafting on individual work performance of bank officers (H5). The study results indicate that cognition on job crafting leaves positive impacts on work engagement, leading to individual work performance enhancement. On the other hand, the relational crafting element implies contribution on neither collective nor individual working performances. Furthermore, no direct effect of cognition on job crafting to individual performance has been identified.

Changes in Pain, Fatigue, Perceived Health Status, Joint Stiffness, Disability in ADL, and Depression after Tai Chi for Arthritis Program (관절염 환자를 위한 타이치 프로그램 적용 후 통증, 피로, 인지된 건강상태, 관절뻣뻣함, 일상활동장애, 우울의 변화)

  • Lee, Kyung-Sook;So, Ae-Young;Choi, Jung-Sook;Lee, Eun-Hee;Yoo, Bo-BI
    • Journal of muscle and joint health
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    • v.15 no.1
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    • pp.53-61
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    • 2008
  • Purpose: The purpose of this study was to observe the changes of the pain, fatigue, perceived health status, disability in ADL, and depression after Tai Chi for arthritis. Method: The subjects were 19 osteoarthritis women enrolled at one primary health care post. They have agreed to participate in this study, and participated in the 12-week Tai Chi program from Dec. 2006 to Mar. 2007, and all the measurement processes in right after, 2 months later, and 4 months later after Tai Chi program. The measurement tools of this study were all self-reported questionnaires such as Numerical Rating Scale (0-100) for pain, fatigue, and perceived health status, Korean-WOMAC (Western Ontario and McMaster University Osteoarthritis) Index for joint stiffness, Korean Health Assessment Questionnaire, and CES-Depression scale. Results: The repeated measure ANOVA revealed the significant differences on pain among the right after, 2 months later, and 4 months later the program. Especially 2 months later after program, pain was significantly increased than right after by t-test. There were no significant differences on fatigue, perceived health status, disability in ADL, and depression. Conclusion: Pain was increased after Tai Chi for arthritis program, but fatigue, perceived health status, disability in ADL, and depression were not changed until 4 months after Tai Chi program.

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Analysis of Bird Community by Habitat Type in Nak-dong Jeongmaek (낙동정맥의서식지유형별조류군집분석)

  • Han, Seung-Woo;Kang, Te-han;Park, Chi-Young;Shin, Yong-Un;Im, Eun-Hong;Lee, Joon-Woo
    • Korean Journal of Environment and Ecology
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    • v.30 no.3
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    • pp.335-343
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    • 2016
  • Of the Nak-dong Jeongmaek, five mountains, viz. Mt. Baek-byeong, Mt. Chil-bo, Mt. Baek-am, Mt. Un-ju, Mt. Go-heon, which are considered to well represent the natural environmental characteristics of Nak-dong Jeongmaek as well as its various terrain, were selected for this study. Two fixed plots were selected as sample study areas of each type of bird habitats and surveyed from May to October in 2015. According to the results of the survey conducted in the five mountains of Nak-dong Jeongmaek, a total of 47 species with 1,163 individuals birds was identified. The largest variety of species occupying a particular habitat type was found in the forest road and the ridge with 31 species. Also, the number of individuals was highest in the valley with 471 individuals. According to the results of nesting guild analysis of the vein (Pearson Chi-Square test, ${\chi}^2=13.377$, p = 0.037) by each Nak-dong Jeongmaek habitat type, the communities that belong to the canopy nesting guild showed a high frequency in development land and the valley while the communities that belong to the hole nesting guild showed a high frequency on the forest road and ridge. The results of Pearson Chi-Square test (${\chi}^2=15.555$, p=0.004) showed that the communities that belong to Bush foraging guild were most frequent in the development area and the community that belong to canopy foraging guild were most frequent inthe valley, the forest road and the ridge. These findings show that different habitat types of Nak-dong Jeongmaek support a great variety of birdlife by providing diverse and excellent resources.

Effects of Team Based Learning on Academic Achievement, Problem Solving Skill and Communication Ability in High Risk Pregnant Nursing (고위험 임부간호교육에 적용한 팀 기반 학습이 학업성취도, 문제해결능력 및 의사소통능력에 미치는 효과)

  • Kim, Su-Mi
    • The Journal of the Korea Contents Association
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    • v.19 no.8
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    • pp.556-564
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    • 2019
  • The purpose of this study is to examine the effects of team based learning on academic achievement, problem solving skill, and communication ability in high risk pregnant nursing. This experimental study is designed for a equivalent control group. The program was put into practice 1 times a week for 8 weeks. The number of subjects in this research consists of 120, where 60 of the experimental group participated in team based learning program and 60 of the control group didn't do. The data was analyzed by ${\chi}^2-test$, Fisher's exact test, independent t-test, and paired t-test. The effects of team based learning approaches on learning outcomes in high risk pregnant nursing are as follows: The problem solving skill of the experimental group has been significantly more elevated than that of the control group. The experimental group has made increase in communication ability. This study has significance in that it identified the availability of the team based learning program and that it would be useful teaching and learning method to achieve learning outcomes.