• Title/Summary/Keyword: Mann-Whitney U test

검색결과 827건 처리시간 0.03초

중등도 이하 소아 근시에서 안경과 각막굴절교정렌즈 착용이 안축장 성장에 미치는 영향 비교 (Comparative Effect of Spectacles and Orthokeratology Lenses on Axial Elongation in Children with Mild-to-Moderate Myopia)

  • 김태희;김명훈;곽주영;최진석;박규홍;이경욱;박태성;정성근;현주
    • 대한안과학회지
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    • 제59권11호
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    • pp.1009-1016
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    • 2018
  • 목적: 중등도 이하 소아 근시에서 안경과 각막굴절교정렌즈(orthokeratology lens, OK) 착용이 안축장 성장에 미치는 영향 및 관련인자를 알아보고자 하였다. 대상과 방법: 2013년부터 2015년까지 내원한 6세에서 13세 사이 -4.50디옵터 이하의 구면렌즈대응치를 가진 소아 100명을 대상으로 후향적으로 OK군(75안)과 안경군(64안) 간에 안축장 변화와 안축장과 관계된 인자들을 분석하였다. 결과: 안축장 변화는 1년째에 OK군이 $0.24{\pm}0.29mm$의 증가를, 안경군이 $0.42{\pm}0.20mm$의 증가를 보였으며, OK군에서 안경군에 비해 유의하게 안축장 성장이 억제되는 양상을 보였다(Mann-Whitney U test, p<0.05). OK군에서 처음 착용한 나이만이 안축장 변화와 음의 상관관계가 있는 것으로 나타났다(Pearson's correlation, r=-0.481, p<0.05). 안경군에서는 처음 착용한 나이가 안축장 변화와 음의 상관관계(Pearson's correlation, r=-0.462, p<0.05)를, 그 외에 현성굴절검사의 초기 구면렌즈대응치 및 초기 구면렌즈값, 난시값은 안축장 변화와 양의 상관관계를 보였다. 안축장 변화를 비교해 보았을 때 OK를 착용한 경우 6세 이상 9세 미만군(28안)에 비해 9세 이상 13세 이하군(47안)에서 유의하게 안축장 성장이 더 억제되는 양상을 보였다(Mann-Whitney U test, p<0.05). 결론: OK 착용은 안경 착용에 비해 효과적으로 안축장의 성장을 억제할 수 있으며, 9세 이상 13세 이하의 소아에서도 효과적인 안축장 성장 억제가 가능하다.

지역사회 노인 대상 한의약 치매예방 프로그램의 효과 평가† (The Evaluation of the effect to the Program for Preventing Dementia on Korean Medicine for Elderly in Community)

  • 정헌영;박금숙;김영희
    • 대한예방한의학회지
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    • 제21권1호
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    • pp.31-39
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    • 2017
  • Objectives : This study was conducted to identify the effects of the program for preventing dementia on Korean medicine on the Knowledge of dementia, Preventive behavior, Depression and Hwa-Byung for elderly. Methods : A non-equivalent control group pretest-posttest design was used with 41 elderly who were assigned to the experimental and control group. Study outcomes were measured by structured questionnaires from August to November 2016. For data analysis, the Chi-square test, the Fisher's exact probability test, t-test, the Mann-Whitney U test, were performed using SPSS version 20.0. Results : There were significant differences in Knowledge of dementia(U=112.500, p <.010), Preventive behavior (U=124.000, p =<.024), and Hwa-Byung (U=129.000, p =<.034) between the two groups in pretest and posttest. Conclusions : The findings have confirmed that the program for preventing dementia on Korean medicine is effective to improve Knowledge of dementia, Preventive behavior, and Hwa-Byung of community elderly. It can be recommended as a public health program for the elderly in communities.

에어로빅 운동 프로그램이 노인의 신체적 기능에 미치는 효과 (The Effects of Aerobic Exercise Therapy on Physical Functions in the Elderly)

  • 정숙희;정경희
    • 지역사회간호학회지
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    • 제21권2호
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    • pp.252-262
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    • 2010
  • Purpose: Designed to examine the effects of aerobic exercise therapy on elders' physical functions. Methods: Selected from an elderly welfare center in an agricultural district located in N City. Thirty seven elders were selected in the experimental group and 38 in the control group, and all the subjects aged over 65. Collected data were statistically analyzed by SPSS/PC 12.0 Win. Detailed data analysis methods were Chi-square, Fisher's exact test, Kolmogorov-Smirnov test, t-test, Mann-Whitney u-test, paired t-test, and Wilcoxon's rank sum test. Results: The first hypothesis "The experimental group who had the aerobic exercise therapy will have greater development in lower leg muscular strength compared to the control group" was supported (t=8.95, p<.001). The second hypothesis "Aerobic exercise therapy participants will show greater development in lower leg endurance" was supported (t=6.12, p<.001). The third hypothesis "Aerobic exercise therapy participants will show greater development in flexibility" was supported (U=49.00, p<.001). The forth hypothesis "Aerobic exercise therapy participants will show greater development in balance" was supported (U=322.00, p<.001). Conclusion: The aerobic exercise therapy showed positive effects on physical functions of the elderly in a rural area.

변형된 페이스 마스크의 치아 및 골격적 효과 (Effects of conventional and modified facemask therapies on dentofacial structures)

  • Yagci, Ahmet;Uysal, Tancan
    • 대한치과교정학회지
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    • 제40권6호
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    • pp.432-443
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    • 2010
  • 이번 연구의 목적은 기존의 페이스 마스크와 변형된 페이스 마스크의 치아 및 골격적 효과를 평가하고자 III급 부정교합환에서 치료군과 비치료군을 비교하였다. 24명의 환자(여자: 13명, 남자: 11)로 구성된 기존의 페이스 마스크 그룹(Group 1, mean age, $9.2{\pm}1.4$ years)과 24명의 환자(여자: 12명, 남자: 12명)로 구성된 변형된 페이스 마스크(Group 2, mean age, $9.3{\pm}1.6$ years); 그리고 21 명(여자: 11 명, 남자: 10명)으로 구성된 대조군 그룹(Group 3, mean age, $9.8{\pm}1.9$ years)으로 분류하였다. 그룹 내 그룹 간에 치료군과 대조군을 통계학적으로 분석하였다. 그룹 내 비교는 비모수적인 방법의 Wilcoxon's test으로 그룹 간의 변화는 Kruskal-Wallis test를 이용하여 분석하였다. 이후 그룹 간의 통계적인 유효성 검증을 위하여 Mann-Whitney test와 Bonferroni's correction 을 시행하였다 (p < 0.016). Group 1에서 SNB 변화가 대조군보다 적었다. SNA, ANB, SN-MP, A to N perp과 Upper lip to E plane이 증가하였다. Group 2에서는 SNB, U1-NA (mm) U1-NA ($^{\circ}$) and Pog to N perp (mm) 변화는 대조군보다 적었다. SNA, ANB, SN-MP, A to N perp과 Upper lip to E plane이 증가하였다. 변형된 페이스 마스크는 상악 열성장이 있는 III급 부정교합 환자에게 효과적으로 사용될 수 있다. 상악궁 확장을 동반한 페이스 마스크를 통하여 상악은 회전을 야기시키지 않고 전방으로 이동하였으며 모든 치료군에서 하악은 후하방으로 이동하였다.

컴퓨터 인지 훈련 프로그램이 경도 치매노인의 인지, 우울, 생활만족도 및 일상생활활동에 미치는 효과 (Effects of a Computerized Cognitive Training on Cognitive, Depression, Life Satisfaction and Activity of Daily Living in Older Adults with Mild Dementia)

  • 김세연;최유임
    • 한국산학기술학회논문지
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    • 제20권4호
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    • pp.311-319
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    • 2019
  • 본 연구는 경도치매노인을 대상으로 컴퓨터 인지훈련 프로그램이 인지기능, 우울, 생활만족도와 일상생활활동에 미치는 효과를 알아보기 위해 시행되었다. 연구대상자는 요양병원에 거주하는 경도치매노인 32명으로, 무작위 대조군 전후설계를 사용하여 실험군과 대조군으로 16명씩 무작위 할당하고 실험군에는 8주 동안 주 1회, 총 8회 컴퓨터 인지훈련프로그램을 적용하였다. 컴퓨터 인지훈련 프로그램은 CoTras-G를 사용하였으며, 컴퓨터 인지훈련 프로그램의 효과를 알아보기 위해 실험군과 대조군에 사전, 사후 동일하게 MMSE-K, SGDS-K, ELS, BI를 실시하였다. 컴퓨터 인지훈련 프로그램이 미치는 효과에 대한 전 후간 차이 검증은 paired t-test, 중재 후 실험군과 대조군간의 변화량 차이 검증은 Mann-Whitney U 검정을 실시하였다. 그 결과 실험군이 대조군에 비해 중재 후 인지기능(t=-4.39, p=0.001), 우울(t=4.11, p=0.001), 생활만족도(t=-8.53, p=0.000)와 일상생활활동(t=-3.10, p=0.007)에서 유의미한 향상을 보였으며, 실험군과 대조군의 사후 비교결과 인지기능(U=54.00, p=0.005), 우울(U=76.50, p=0.045), 생활만족도(U=56.00, p=0.007)와 일상생활활동(U=59.50, p=0.008)에서 유의미한 차이를 보였다. 따라서 본 연구는 컴퓨터 인지훈련 프로그램이 경도 치매노인의 인지기능, 우울, 생활만족도와 일상생활활동을 향상시키기 위해 활용 가능한 효과적인 프로그램임을 제시한다.

고등학생의 수학 자기조절 학습 요인에 대한 집단별 수준 차이 비교 (Comparison of Differences in Levels per Group on Math Self-Regulated Learning Factors of High School Students)

  • 유기종
    • 한국수학사학회지
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    • 제34권1호
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    • pp.21-37
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    • 2021
  • The purpose of the present study is to compare the differences in levels per group of high school students regarding the self-regulated learning factors for mathematics. For this purpose, a self-regulated learning measurement tool was developed and surveys were conducted. And the statistical analysis was completed using the frequency analysis, Kolmogorov-Smirnov normality test, Mann-Whitney U test and the Kruskal-Wallis H test. As a result, it is found that self-efficacy is of statistically significant differences in self-regulated learning levels regardless of the group classifications but test anxiety does not show statistically significant differences in self-regulated learning levels regardless of the group classifications.

이압요법이 재가 뇌졸중 환자의 상지기능, 지각된 건강상태 및 일상생활동작에 미치는 효과 (Effects of Auricular Acupressure Therapy on the Upper Extremity Function, Perceived Health Status and Activities of Daily Living among Stroke Patients at Home)

  • 차남현;김윤경
    • 재활간호학회지
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    • 제18권2호
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    • pp.67-74
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    • 2015
  • Purpose: The purpose of this study was to identify the effects of auricular acupressure therapy on the upper extremity function, perceived health status and Activities of Daily Living for rehabilitation among stroke patients at home. Methods: As a quasi-experimental study, non-equivalent control group pretest-posttest design was used. Data were collected from August 1st to September 31st, 2012. Participants were 28 (Experimental 17, Control 11) stroke patients at home. Using the SPSS/WIN 12.0 program, data were analysed by the $x^2$-test, Fisher's exact test, Mann-Whitney U test and Wilcoxon signed rank test. Results: Upper extremity function (U=28.00, p=.001) and activities of daily living (U=47.50, p=.029) were significantly higher in the experimental group compared to the control group. However, perceived health status was not significantly different between the two group. Conclusion: This study proved that auricular acupressure therapy was effective for upper extremity function and activities of daily living among stroke patients at home.

중극(中極), 신궐(神厥) 뜸요법이 여성의 요실금과 삶의 질에 미치는 효과 (Effect of Moxibustion at Junggeuk(CV3), Singwol(CV8) on Women's Urinary Incontinence and Quality of Life)

  • 이은숙;김이순;이정원;오미정;김경철
    • Korean Journal of Acupuncture
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    • 제30권3호
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    • pp.193-200
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    • 2013
  • Objectives : This study is to examine the effects of moxibustion at Junggeuk(CV3), Singwol(CV8) on women's urinary incontinence and quality of life. The study is a research based on the non-equivalent control group pretest-posttest design. Methods : The subjects of the study were 45 women who were using either of 2 health clinics located in Ulsan. They were sampled in accordance with predetermined standards and then divided into the experimental and control groups, respectively consisting of 22 and 23 members. In treating those women through moxibustion, this researcher applied 2 sheets of 'shingigu' to each of the women on 40 min, per time basis. This experiment was conducted 6 times in total for 2 weeks on every two day basis. Data from all of the measurements were statistically processed and analyzed using SPSS/WIN 12.0. Demographic characteristics of the subjects were examined and indicated in frequency and percentage. The homogeneity test of the two groups was conducted using $x^2$-test, Fisher's exact test, t-test and Mann-Whitney U Test. Hypotheses set for the study were verified through t-test and Mann-Whitney U Test. Results : The experimental group who take moxibustion will be lower in the severeness of urinary incontinence than the control group who do not was supported(p<0.001). 2. The experimental group who take moxibustion will be higher in score for life quality than the control group who do not was supported(U=42.00, p<0.001). Conclusions : These findings suggest that moxibustion can be an effective intervention for women having urinary incontinence because it treats the symptom with no adverse effect and it is non-invasive and easily applicable.

통계적 방법에 의한 지점강우의 권역화 연구 (A Study on the Regionalization of Point Rainfall by Statistical Methods)

  • 이정식;신창동;김영욱
    • 한국방재학회:학술대회논문집
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    • 한국방재학회 2007년도 정기총회 및 학술발표대회
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    • pp.575-578
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    • 2007
  • The objective of this study is to analyze the regionalization of point rainfall by statistical methods for regional frequency analysis of the rainfall. The rainfall data used in this study are annual maximum rainfall at 57 stations during the period of more than 30 years for 12 durations(10min, 1, 2, 3, 4, 5, 6, 8, 10, 12, 18, 24hr) in Korea. The Mann-Whitney U test, Kruskal-Wallis one-way analysis of variance of nonparametric test the principal component and the cluster analysis have been performed to analyze the regionalization of rainfall. The results of this study are as follows; (1) The region which hydrological homogeneous is accepted does not exist for whole duration in Korea. (2) The result of nonpametric test shows that hydrological homogeneous regions of point rainfall are divided by 5 regions. (3) In case of cluster analysis hydrological homogeneous regions of point rainfall are divided by 6 regions and 4 other areas.

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청심연자탕가미방의 효과에 대한 증례군 보고 - 9명의 두통 환자를 중심으로 - (Case Report on the Effectiveness of Chengsimyeonjatang-gamibang, focusing on nine patients with headache)

  • 선승호
    • 대한한방내과학회지
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    • 제30권3호
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    • pp.624-631
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    • 2009
  • Objectives : The purpose of this case series was to investigate the effectiveness of Chengsimyeonjatang-gamibang for headache. Methods : The case subjects were nine patients who were diagnosed as Taeumin from the Department of Sasang Constitutional Medicine. They were selected among outpatients who visited Sangji Oriental Medical Hospital with complaint of headache from October 2007 to January 2008 through chart reviews. They were treated with Chengsimyeonjatang-gamibang without other treatments. Relative seriousness of headache was determined by Headache Impact $Test^{TM}$(HIT-$6^{TM}$) questionnaire. Results of before and after therapy were evaluated and scored using Visual Analogue Scale (VAS). The results were analyzed using statistical methods. such as Friedman test, Wilcoxon signed-rank test, and Mann-Whitney U Test. Results : The study showed that the VAS score significantly decreased after treatment (P<0.05). Conclusions : In summary, this case report suggests that Chengsimyeonjatang-gamibang appears to be effective in the treatment of headache.

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