• Title/Summary/Keyword: two sample t-test

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The Effect of Chain Exercise Types on the Exercise Performance Improvement in Lower Limb Exercise for the Life-Carement (라이프케어먼트를 위한 신체운동수행능력 향상에 사슬운동형태가 미치는 효과 연구)

  • Yang, Seung-Hoon
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.8
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    • pp.391-396
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    • 2020
  • This study was to examined the effect of chain types exercise of lower limbs on the motor performance differences for the life-carement. For this, twenty normal adult women participated and they were examined the differences of exercise effects about abdominal muscle activity and balance ability by applying two types of chain exercise. In order to identify the differences we let them conduct exercise for 4 weeks with each type of exercise. And we used paired t-test and Independent sample t-test for comparing the differences in the group and inter groups. There was a significant difference in the value of 0.05 to verify statistical significance. As a result of this research, it was found that closed chain exercise is more effective than open chain exercise in muscle activity and balance function. Therefore, in the clinical therapeutic environment, if you apply chain exercise for patient to improve lower limb motor performance, we would recommend the close kinematic chain exercise.

Comparison of Treatment Outcome Assessment for Class I Malocclusion Patients: Peer Assessment Rating versus American Board of Orthodontics-Objective Grading System

  • Hong, Mihee;Kook, Yoon-Ah;Baek, Seung-Hak;Kim, Myeng-Ki
    • Journal of Korean Dental Science
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    • v.7 no.1
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    • pp.6-15
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    • 2014
  • Purpose: The purpose of this retrospective study is to investigate the degree of coincidence between the peer assessment rating (PAR) index and American Board of Orthodontics objective grading system (ABO-OGS) in the assessment of orthodontic treatment outcomes of Class I malocclusion cases. Materials and Methods: The sample consisted of 26 Class I patients. The PAR index was used for evaluation of pre-(T0) and posttreatment (T1) casts, and the ABO-OGS for assessment of T1 casts. If there was a reduction in PAR scores from T0 to T1 of more than 30%, the label 'PAR+' was given to the case, and if not, it was labeled 'PAR-'. If the ABO-OGS was less than 27, the label 'OGS+' was given to the case and if not, it was labeled 'OGS-'. 'A PAR-only qualified group' (PAR+), 'ABO-OGS-only qualified group' (OGS+), 'both indices qualified group' (PAR+/OGS+), and 'both indices disqualified group' (PAR-/OGS-) were compared with a Wilcoxon rank-sum test, sensitivity/specifi city test and Spearman's correlation test. Result: PAR scores for T0, T1, and percentage reduction were 21.1, 6.4, and 65.9%, respectively, and 35.4 for ABOOGS. The distribution of the 'PAR+/OGS+', 'PAR+', and 'PAR-/OGS-' group was 19.3%, 76.9%, and 3.8%, respectively. The T0-PAR, T1-PAR and PAR point reductions for the 'PAR+' group were significantly higher than those of 'PAR+/OGS+' groups (23.1 vs. 15.6; 6.7 vs. 4.6; and 16.5 vs. 11.0; all P<0.05). However, the PAR-percentage reduction and treatment duration between the two groups were not statistically different (70.0% vs. 67.0%, P=0.4325; 24.1 months vs. 25.0 months, P=0.4057). The T1-ABO-OGS score for 'PAR+' group was significantly higher than that of the 'PAR+/OGS+' groups (38.2 vs. 24.0, P<0.001). Conclusion: Since the fraction of the 'PAR+/OGS+' group was less than 20% and there was no significant correlation between PAR-percentage reduction and T1-ABO-OGS, development of a new index system for the accurate evaluation of treatment outcome is needed.

Difference of Product Interest and Relation to Innate Innovativeness, and Perceptive Construct of Products according to Consumers' Gender (소비자 성별에 따른 상품 유형별 관심도 차이, 내재적 혁신성과의 상관관계 및 상품 지각 구조 분석)

  • Chung, Ihn Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.39 no.4
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    • pp.505-516
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    • 2015
  • This study investigated difference of product interest and its relation to consumers' innate innovativeness according to gender as well as compared the perceptive construct of products between male and female consumers. A survey involving male and female college students was conducted in the Daegu and Gyeongbuk areas in December 2013. Subsequently, 400 responses were analyzed using descriptive statistics, correlations, independent sample t-test, reliability analysis, ANCOVA, and multidimensional scaling. Among 45 products, male respondents showed a significantly high degree of interest over 12 categories such as watches, desktop computers, cars, sports products, and video games compared to females. The female sample showed a significantly high degree of interest for 29 product categories such as clothing, movies, skin care shops, cosmetics, eating-out, teeth whitening, coffee, cameras, and performances compared to males. Innovative male consumers were interested in traveling, movies, clothing, eating-out, running shoes, and wallets; however, female consumers' innovativeness was significantly related to previously determined items of interest. Two dimensions explaining the male consumers' products perception construct were 'hard versus soft' and 'usual versus special'. Instead, female consumers' were 'special versus usual' and 'expressive versus functional'.

The Comparative Financial Performance of Outsourcing and Vertically Integrated Corporations

  • Khudadad, Shamima;Tahir, Muhammad;Jan, Ghulam
    • Asian Journal of Business Environment
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    • v.8 no.3
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    • pp.23-31
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    • 2018
  • Purpose - The purpose of this study is to analyze the comparative financial performance of outsourcing and vertically integrated corporations from Footwear and Apparel industry. Research design, data, and methodology - Secondary data is collected from the published audited annual reports of the footwear and apparel corporations listed on stock exchanges globally. In the current study, 40 footwear firms have been opted that include 20 vertically integrated and 20 outsourcing firms. The sample is distributed into two groups based on threshold up-to 50 percent respectively outsourcing and vertically integrated companies. Sample independent t-test is applied to compare the financial performance of outsourcing and vertically integrated firms. Results - Based on the investigation of 10 years' data of financial ratio, the results of the study show that there is significant difference between outsourcing and vertical integration strategy on return on assets, return on equity while insignificant difference has found with profit margin. Conclusions - The findings of the current study indicates that there is significant difference between the financial performance of outsourcing and vertically integrated firms in terms of return on asset, return on equity and insignificant difference in terms of profit margin.

Testing Differences of Leisure Satisfaction by Demogrpahic Characteristics of MTB participants

  • MOON, Bo Ra;LEE, Hwan Yeol;SEO, Won Jae
    • Journal of Sport and Applied Science
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    • v.3 no.1
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    • pp.27-34
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    • 2019
  • Purpose: Mountain biking as a sport and recreational activity has grown rapidly over the previous two decades. The purpose of this study is to analyze differences of leisure satisfaction by demographic characteristics of mountain bike participants. Research design, data, and methodology: To accomplish the purpose, the study employed purposive sample method among nonprobability sampling and collected data from 300 participants. Of collected data, 288 responses were analyzed excepted for uncompleted responses. To analyze data, study utilized statistical techniques including descriptive statistics, reliability analysis, independent-sample t-test, and one-way ANOVA, and to verify difference between individual groups in relation to significant results, Duncan's multiple range was conducted. Results: Findings indicated no differences of leisure satisfaction by gender. Similarly, education level and occupations have not influence leisure satisfaction. Yet, differences of leisure satisfaction by participation frequencies were observed. Of participation frequencies, participants riding 5 times a week were more satisfied with MTB participation than the other groups participating less 3 times a week. Conclusions: The findings provide a couple of insights in terms of promoting MTB participation. In specific, results indicated that MTB would be attractive sports that is able to appeal huge populations regardless of their education and occupation. Furthermore, consistent participation is judged an effective way to increase psychological, educational, and social satisfaction. In this sense, regional MTB clubs could play a salient role in motivating riders to more participate in MTB. Hence, establishing strategies for encouraging club activities are needed.

Type of tooth movement during en masse retraction of the maxillary anterior teeth using labial versus lingual biocreative therapy in adults: A randomized clinical trial

  • Sadek, Mais M.;Sabet, Noha E.;Hassan, Islam T.
    • The korean journal of orthodontics
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    • v.49 no.6
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    • pp.381-392
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    • 2019
  • Objective: The objective of this two-arm parallel trial was to compare the type of tooth movement during en masse retraction of the maxillary anterior teeth using labial versus lingual biocreative therapy. Methods: Twenty-eight subjects were randomized in a 1 : 1 ratio to either the labial or lingual group. En masse anterior retraction was performed using labial biocreative therapy in group A and lingual biocreative therapy in group B. Cone beam computed tomography scans were taken before and after retraction and the primary outcome was the type of tooth movement during anterior retraction. Data were analyzed using paired t-tests for comparisons within each group and independent-sample t-test for comparison of the mean treatment changes between the two groups. Results: Significant differences were found between the two groups in relation to the type of tooth movement (labiolingual inclination of the central incisor; mean difference, $5.85{\pm}1.85^{\circ}$). The canine showed significant distal tipping in the lingual group (mean difference, $6.98{\pm}1.25^{\circ}$). The canine was significantly more intruded in the lingual group (mean difference, $1.67{\pm}0.49mm$). Good anchorage control and significant soft tissue changes occurred in both groups. No serious adverse effects were detected. Conclusions: With a 10-mm retraction hook, the labial biocreative technique with the reverse curve overlay provided anterior retraction with good torque control, while in the lingual group, anterior retraction occurred with controlled tipping movement with significant distal tipping and intrusion of the canine (trial registration: The trial was registered at ClinicalTrials.gov [NCT03239275]).

Effects of a Facial Muscle Exercise Program including Facial Massage for Patients with Facial Palsy (안면마비 환자를 위한 안면근육 운동 프로그램의 효과)

  • Choi, Hyoung Ju;Shin, Sung Hee
    • Journal of Korean Academy of Nursing
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    • v.46 no.4
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    • pp.542-551
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    • 2016
  • Purpose: The purpose of this study was to examine the effects of a facial muscle exercise program including facial massage on the facial muscle function, subjective symptoms related to paralysis and depression in patients with facial palsy. Methods: This study was a quasi-experimental research with a non-equivalent control group non-synchronized design. Participants were 70 patients with facial palsy (experimental group 35, control group 35). For the experimental group, the facial muscular exercise program including facial massage was performed 20 minutes a day, 3 times a week for two weeks. Data were analyzed using descriptive statistics, ${\chi}^2$-test, Fisher's exact test and independent sample t-test with the SPSS 18.0 program. Results: Facial muscular function of the experimental group improved significantly compared to the control group. There was no significant difference in symptoms related to paralysis between the experimental group and control group. The level of depression in the experimental group was significantly lower than the control group. Conclusion: Results suggest that a facial muscle exercise program including facial massage is an effective nursing intervention to improve facial muscle function and decrease depression in patients with facial palsy.

Effects of Hand Massage with Aroma Oil on Stress Responses and Serum Immunity of Registered Nurse during the Night Duty (아로마 손 마사지가 밤 근무 간호사의 스트레스 반응 및 IgA에 미치는 효과)

  • Lee, Hea-Sook;Hwang, Hea-Sook;Kim, Young-Ah
    • The Journal of Korean Academic Society of Nursing Education
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    • v.13 no.2
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    • pp.169-176
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    • 2007
  • Purpose: The purpose of this study was to verify the effect of aromatherapy hand massage on stress responses and serum Immunity of RN's before the night duty. Method: The data were collected during the period from Oct. 10 to Nov. 15, 2005 at S-Hospital in Seoul. There were forty-eight subjects, 24 for the experimental and 24 for the control group. A Pre & post test were conducted to measure pulse rate, perceived stress(level and score) and a blood sample for cortisol and IgA. In the experimental group, lavender and geranium were used. Data were analyzed by descriptive statistics, $x^2$-test and t-test with SPSS program. Result: The pulse rate was reduced but there were no significant differences between the two groups. Scores of subjective stress(VAS) decreased significantly after aromatherapy hand massage and the level of serum Cortisol was reduced significantly. The level of serum IgA was elevated significantly. Conclusion: Aromatherapy hand massage could be a useful intervention to reduce stress and elevate the immunity of nurses during the night duty.

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The Effect of Elderly Nursing Care Education Programs on Nurses' Knowledge, Attitudes and Nursing Performance Toward the Elderly (노인간호 교육프로그램이 간호사의 노인에 대한 지식, 태도 및 간호수행도에 미치는 효과)

  • Choi, Keum Bong
    • The Journal of Korean Academic Society of Nursing Education
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    • v.18 no.3
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    • pp.522-532
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    • 2012
  • Purpose: The purposes of this study were to develop an elderly care nursing education program and evaluate its effect on knowledge, attitudes and nursing performance of nurses toward older adults. Methods: A quasi-experimental study with a non-equivalent control group pretest-posttest design was used. Participants were recruited from two geriatric hospitals. The sample consisted of an intervention group (n=29) that participated in the educational program and a control group (n=30). The data were collected prior to and 6 weeks after the intervention using self-administered questionnaires. Data analyses utilized $x^2$-test, Fisher's exact probability test, and t-test. Results: After the intervention, knowledge and nursing performance about the elderly care increased significantly in the experimental group compared to the control group. However, there was no statistically significant difference between the groups in their attitudes toward the elderly. Conclusion: Findings indicate that to provide better nursing care to the elderly, nurses need to be able to practically apply the knowledge they have acquired from the elder-care nursing education programs in hands-on situations. To achieve this, nurses should work to change their personal attitudes about the elderly. Also, evidence-based guidelines for elderly nursing care, administrative support of institutions, and multidisciplinary approaches are required.

Comparison of Perceived Health Status, Health Promoting Behaviors and Depression between Korean and Foreign Students at a Women's University (일개 여자대학교 한국 학생고 외국 학생의 건강상태지각, 건강증진행위 및 우울 비교)

  • Do, Eun-Young;Cho, In-Sook
    • Research in Community and Public Health Nursing
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    • v.20 no.2
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    • pp.161-168
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    • 2009
  • Purpose: This research was conducted to investigate perceived health status, health promoting behaviors and depression level in Korean and foreign students at women's university. Methods: The sample group of this study consists of 100 Korean students at a women's university and 98 foreign students from China and Vietnam who were enrolled at the same university in G City. The research results were analyzed using the SAS program (Version 8.2) with Chi-square test, Fisher's exact test and t-test. Results: 1) The Korean students showed a significantly higher score in drinking and smoking than foreign students. Also, age, religion, part time job, stress and allowance were significantly different between the two groups. 2) The foreign students showed a significantly higher score in perceived health status and health promoting behavior than the Korean students. 3) The foreign students showed a significantly higher score in depression than the Korean students. Conclusion: In the development of health programs for foreign students, it is necessary to focus on reducing depression and to consider the traditions of their own countries. It is desired to conduct further study about health promoting behavior and factors affecting health with respect to the countries where the foreign students originated.

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