• 제목/요약/키워드: Wilcoxon signed rank test

검색결과 498건 처리시간 0.026초

Changes in the fractal dimension of peri-implant trabecular bone after loading: a retrospective study

  • Mu, Teh-Jing;Lee, Dong-Won;Park, Kwang-Ho;Moon, Ik-Sang
    • Journal of Periodontal and Implant Science
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    • 제43권5호
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    • pp.209-214
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    • 2013
  • Purpose: To assess bony trabecular changes potentially caused by loading stress around dental implants using fractal dimension analysis. Methods: Fractal dimensions were measured in 48 subjects by comparing radiographs taken immediately after prosthesis delivery with those taken 1 year after functional loading. Regions of interest were isolated, and fractal analysis was performed using the box-counting method with Image J 1.42 software. Wilcoxon signed-rank test was used to analyze the difference in fractal dimension before and after implant loading. Results: The mean fractal dimension before loading ($1.4213{\pm}0.0525$) increased significantly to $1.4329{\pm}0.0479$ at 12 months after loading (P<0.05). Conclusions: Fractal dimension analysis might be helpful in detecting changes in peri-implant alveolar trabecular bone patterns in clinical situations.

시뮬레이션을 적용한 임상추론 교과목의 적용효과: 일 대학의 예를 중심으로 (Evaluation of Effects of a Clinical Reasoning Course among Undergraduate Nursing Students)

  • 이주희;최모나
    • 성인간호학회지
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    • 제23권1호
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    • pp.1-9
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    • 2011
  • Purpose: To evaluate undergraduate nursing students' ability in clinical competence, critical thinking, and problem solving following enrollment in a clinical reasoning course. Methods: A clinical reasoning course utilizing a human patient simulator and scenarios was offered to 22 senior students at a College of Nursing in Seoul. Students' clinical competence was measured with a checklist of 15 items by analyzing students' performance recorded on video tapes for eight scenarios. Critical thinking disposition and problem solving were measured by a self-administered questionnaire before and after the course. Data were analyzed using descriptive statistics and Wilcoxon signed-rank test. Results: The high scored items of clinical competence were: 'obtain relevant subjective/objective data', 'interpret vital signs', 'communicate with healthcare providers', and 'utilize standard precautions including handwashing.' Students' critical thinking and problem solving scores following the course were increased with statistical significance. Conclusion: A clinical reasoning course utilizing a human patient simulator creates a realistic clinical environment for nursing students and provides the opportunity to obtain clinical competence, critical thinking, and problem solving skills.

보육현장 아동학대에 대한 근거기반 맞춤형 개입 모델 개발 및 적용: 다학제간 협력적 연계 시스템을 중심으로 (The Application of Customized Evidence-based Counseling for Abused Preschool Children in Day Care Centers: Focusing on the Multidisciplinary Cooperative Linking System)

  • 이경숙;박진아
    • 한국보육지원학회지
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    • 제16권1호
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    • pp.1-20
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    • 2020
  • Objective: The purpose of this study was to explore the application of the multidisciplinary model, which is customized evidence-based counseling for abused preschool children done by a day care center teacher. Methods: The participants were 16 preschool children which were abused by a day care center teacher and their parents. The data were analyzed by using the Wilcoxon Signed-rank test. Results: The multidisciplinary cooperative service model based on customized evidence-based counseling for abused preschool children, their parents, and day care center teachers was developed. Based on this model, customized evidence-based Post-Traumatic Stress Disorder (PTSD) emergency intervention was provided to preschool children abused by a day care teacher in Incheon. The multidisciplinary cooperative emergency intervention service proved to be effective in reducing emotional and behavioral problems of abused preschool children and enhancing the mental health of parents. Conclusion/Implications: The results of this study indicated that the customized evidence-based counseling for abused preschool children done by a day care center teacher using the multidisciplinary cooperative linkage system would be effective, and that child abuse prevention by day care center teachers and intervention services should be provided systematically at the national level.

미주신경 전기자극이 심박변이도와 스트레스호르몬 분비에 미치는 효과 - 파일럿 연구 (Effect of Vagus Nerve Electrical Stimulation to Cortisol Level Control and Heart Rate Variability(HRV) - Pilot Study)

  • 문현주;조성학
    • 대한통합의학회지
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    • 제6권3호
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    • pp.11-16
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    • 2018
  • Purpose: Stress tends to cause sympathetic hyperactivity and increase blood cortisol levels. The vagus nerve is a parasympathetic nerve that is involved in relaxing the body. The purpose of this study was to investigate the effects of electrical stimulation of the vagus nerve on stress hormone (cortisol) levels and heart rate variability (HRV) in humans. Methods: A total of 10 healthy subjects participated in the pilot experiment. All subjects underwent electrical vagus nerve stimulation for 20 minutes in the cymba conchae of the left ear. An electro cardiogram meter was used to measure HRV. Blood samples were collected and analyzed for cortisol levels. The standard deviation of all normal N-N intervals (SDNN), root mean square of successive differences (RMSSD), low frequency, high frequency, and cortisol levels were compared in pre and post mean values after the intervention. Data were analyzed using the Wilcoxon's signed-rank test. Results: Coritsol levels were observed to decrease after vagus nerve electrical stimulation. The mean SDNN and RMSSD values were increased after the intervention, but not significantly. Conclusion: Vagus nerve electrical stimulation has been shown to increase the ability of the parasympathetic nerve to adapt to upward regulation and stress. Vagus nerve electrical stimulation could thus be an effective treatment for modern social psychological stress control.

중년 여성 대상의 지역사회 참여형 비만 중재 프로그램의 효과 (Effects of Community Based Participatory Obesity Intervention Program in Middle-Aged Women)

  • 김현
    • 한국보건간호학회지
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    • 제29권1호
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    • pp.79-89
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    • 2015
  • Purpose: The aim of the study was to determine the effects of a community based participatory program in obese middle-aged women. Methods: One-group pretest-posttest design was used. The subjects were 35 middle-aged women. Data were collected at public health centers in Chungcheongnam-Do from March to May, 2013. To evaluate the effect of the program, physiological indexes(body mass index, skeletal muscle mass, body fat mass, visceral fat area) and health behavior indexes(dietary practice guidelines score, moderate physical activity, drinking frequency) were measured. Analysis was performed using a Wilcoxon Signed Rank Test. Results: After the program, physiological indexes (BMI, BFM, SMM, VFA) and health behavior indexes (dietary guidelines scores, frequency of physical activity, drinking frequency) were significantly improved. Conclusion: The community based participatory obesity program by public health centers is considered to be effective. Therefore, greater effort is needed for better participatory program development of several health promoting fields, and more research is needed in order to examine a continuous effect.

대사증후군 대상자들의 건강코칭프로그램 평가 (The Evaluation of a Health Coaching Program on Metabolic Syndrome Patients)

  • 조희숙;정수미;이혜진
    • 보건교육건강증진학회지
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    • 제29권1호
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    • pp.97-108
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    • 2012
  • Objectives: We assessed the feasibility of health coaching for health coaching program on metabolic syndrome. Methods: We developed a 6 month health coaching program on metabolic Syndrome. We recruited people with metabolic syndrome according to modified NCEP-ATP III. The participants were 9 men over 30 years of age who had taken a health screening at general hospital. We collected data such as demographics, BMI, body fat, blood pressure, HDL-cholesterol blood sugar and triglyceride. The program was analyzed by using Wilcoxon signed rank test. Results: Participants showed significantly decreased BMI, weight, waist circumference, body fat after 6 month program. They talked the awareness about their own behavior. They changed into better for eating habits, physical activities, and self management. Their discipline increased and eating habits became regular. They were satisfied to this program and showed strong confidence about their own change. Conclusions: Coaching did not direct certain behavioral change but guided self awareness and practice. Health coaching program showed long maintained effect to participants. We suggested health coaching as a helpful individual program to intervene risky health behavior especially for metabolic Syndrome.

미소안면침 시술 후 안면부 체온변화에 대한 임상적 고찰 : A case study (The Changes of Facial Temperature by Miso Facial Rejuvenation Acupuncture : A case study)

  • 황덕상;송정화;김용석;이경섭
    • 대한한방체열의학회지
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    • 제6권1호
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    • pp.32-38
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    • 2008
  • Objective: To investigate the changes of facial temperature by Miso Facial Rejuvenation Acupuncture treatment. Methods: One middle-aged women who has no other disease was recruited. The Miso Facial Rejuvenation Acupuncture was performed on only right face. We measured the facial temperature using the Digital Infrared Thermal Imaging (DOREX Inc. Spectrum 9000 MB, USA, D.I.T.I.) before, immediate after and 10 minutes after treatment. And we used the Wilcoxon signed rank test (P<0.05) to compare the difference of facial temperature at each time. Results: Right facial temperature (the area treated by acpuncuture) increased immediately from $30.02{\pm}1.87^{\circ}C$ to $32.24{\pm}1.03^{\circ}C$, the change of temperature is statistically significant. At 10 minutes after treatment, right facial temperature decreased little, but there was no statistical significance. Left facial temperature increased little, but there was no statistical significance. The difference between right and left face increased after Miso facial rejuvenation acupuncture treatment. Conclusion: Miso facial rejuvenation acupuncture could make the facial temperature increase.

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발반사마사지가 여성암환자의 활력징후, 코티졸, 면역반응에 미치는 효과 (Effect of Foot Reflexology on the Vital Signs, Blood Cortisol, Lymphocytes and Natural Killer Cell of Female Cancer Patients)

  • Kim, Keum-Soon;Won, Jong-Soon;Jeong, Ihn-Sook;Choi, Wan-Hee;Kang, Ji-Yeon
    • Journal of Korean Biological Nursing Science
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    • 제6권1호
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    • pp.5-15
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    • 2004
  • 목적 : 이 연구는 항암제를 투여받는 여성암환자에서 발반사마사지가 스트레스반응(활력징후, 코티졸)과 면역반응에 미치는 효과를 평가하기 위함이다. 방법 : 11명의 여성암 환자를 임의로 표출한 후 단일군 전후실험설계로 진행하였다. 종속변수는 스트레스 반응으로 활력징후(수축기 혈압, 이완기 혈압, 맥박수, 호흡수)와 혈중 코티졸, 면역반응으로 림프구 아군(CD3, CD4, CD8, CD19)과 자연살세포(NK cells)이며, 독립변수는 발반사마사지이었다. 중재 전후 종속변수의 변화를 보기 위해 Wilcoxon signed rank test를 실시하였다. 결과 : 중재 전에 비해 중재 후 수축기 혈압, 이완기 혈압, 맥박수, 혈중 코티졸치, CD4와 CD19는 유의한 변화를 보였으나 호흡수, CD3, CD8, 그리고 자연살세포는 유의한 변화를 보이지 않았다. 결론 : 이러한 연구결과는 발반사마사지가 항암화학요법을 받는 여성암 환자의 스트레스 호르몬과 면역관련세포에 영향을 보였지만 표본수가 작고 중재가 1회에 그쳤기 때문에 이러한 단점을 보완한 추후연구를 통해 발반사마사지의 효과를 좀더 잘 규명할 수 있을 것이다.

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미소안면침 시술후 안면부 체온변화에 대한 임상적 고찰;A case study (The Changes of Facial Temperature by Miso Facial Rejuvenation Acupuncture;A case study)

  • 황덕상;송정화;김용석;이경섭
    • Journal of Acupuncture Research
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    • 제25권1호
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    • pp.89-95
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    • 2008
  • Objectives : To investigate changes in facial temperature generated by Miso Facial Rejuvenation Acupuncture treatment. Methods : One middle-aged woman with no diseases was recruited. Miso Facial Rejuvenation Acupuncture was performed on only the right side of her face. We measured her facial temperature using digital infrared thermal imaging(DOREX Inc. Spectrum 9,000MB, USA, D.I.T.I) before, immediately after, and 10 minutes after treatment. We also used the Wilcoxon signed rank test(p<0.05) to compare the differences in facial temperature from one side of the face to the other at each time. Results : Facial temperature on the right side(the area treated by acupuncture) increased immediately from $30.02{\pm}1.87^{\circ}C$ to $32.24{\pm}1.03^{\circ}C$, a statistically significant increase. Ten minutes after treatment, facial temperature on the right side decreased a little bit, but there was no statistical significance. Facial temperature on the left side increased a little, but there was no statistical significance. The difference between the right and left sides of the face increased after the Miso Facial Rejuvenation Acupuncture treatment. Conclusions : Miso Facial Rejuvenation Acupuncture could increase facial temperature.

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측정부 온도 부하에 따른 광용적맥파 파형 요동 특성 분석 (Analysis for the Fluctuation of the Photoplethysmographic Waveform derived by Temperature Stress of Measuring Position)

  • 이충근;신항식
    • 전기학회논문지
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    • 제64권2호
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    • pp.304-309
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    • 2015
  • Applicable range of Photoplethysmography (PPG) becomes wider as a non-invasive physiological measurement technique. However, PPG waveform is easy to be distorted by ambient light or vascular variation from temperature changes. Especially, irregular variation of PPG waveform caused by ambient temperature not only severely distorts the PPG, but also leads miss interpretation in clinical applications. Therefore, the investigation of between temperature and PPG waveform is quite important in using PPG. The purpose of this research is to quantify the PPG waveform characteristic and to investigate the waveform variation following the temperature change on measuring site. To quantify the fluctuation of PPG waveform, we use two techniques; detrended fluctuation analysis (DFA) and AC/DC analysis of PPG. We record PPG under temperature stress, which applied by medical use heat pack ($40^{\circ}C$) and ice pack ($0^{\circ}C$). Ten participants were applied to the experiment, and the result was evaluated to approve the temperature effect with statistical method, Wilcoxon signed rank test. The result shows that the AC component (p<0.05) and perfusion index DFS scale exponent (p<0.01) of PPG have the significance to temperature stress except for a DC component of PPG.