• Title/Summary/Keyword: independent t-test

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Convergence study of Comparison of prognosis between Adult and Elderly patients with Traumatic Acute Subdural Hematoma: Retrospective survey research (성인과 노인에서 외상성 급성 경막하 혈종의 예후 비교에 대한 융합적 연구: 후향적 조사 연구)

  • Lee, Seung-Woo;Woo, Sang-Jun;Kim, Eun-A
    • Journal of the Korea Convergence Society
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    • v.11 no.6
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    • pp.411-422
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    • 2020
  • Purpose: The purpose of this study is to compare the prognosis of traumatic acute subdural hematoma between adults and the elderly to provide appropriate nursing according to age. Methods: A retrospective medical records research study was conducted on 239 patients(adults 104, elderly 135) at Gwangju C university hospital. For data analysis, χ2 test, independent sample t-test, one-way ANOVA were used. Results: There was no difference between GCS at discharge(t=-0.03, p=.978) and GOS at discharge(t=0.17, p=.863). But there were differences in gender(χ2=4.19, p=.041), history(χ2=20.78, p<.001), GCS at admission(t=-2.22, p=.028), pupil reflection at admission(t=8.04, p=.005), pH(t=-3.30, p=.001), serum blood glucose(t=-0.85, p=.040), complications(χ2=6.450, p=.011) between adults and elderly. Conculsion: When nursing patients with traumatic acute subdural hematoma, it is thought that patients assessment and nursing care considering the clinical characteristics according to age can be provided. Future research needs to develop educational materials for medical staff.

Is the t-test insensitive than the bootstrap method in the P300-based concealed information test? (P300 숨긴정보검사에서 t 검증이 부트스트랩 방법보다 덜 민감한가?)

  • Eom, Jin-sup;Sohn, Jin-Hun;Park, Mi-Sook
    • Korean Journal of Forensic Psychology
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    • v.11 no.1
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    • pp.21-36
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    • 2020
  • In P300-based concealed information test (P300 CIT), it evaluates whether the P300 amplitude for the probe is significantly greater than that of the irrelevant to determine if the suspect is telling a lie. An independent sample t-test or a bootstrap method can be used as a statistical test to make that decision. Rosenfeld et al. (2004) used the bootstrap method, claiming that "t tests on single sweeps are too insensitive to use to compare mean probe and irrelevant P300s within individuals" and their method has been accepted to date. The purpose of the study is to evaluate whether the power of t-test is lower than that of the bootstrap method in the P300 CIT. The Monte Carlo study was conducted by using EEG collected from 39 participants. The results showed that the type I error rates of the t-test and the percentile bootstrap method were similar and the power of the percentile bootstrap method was slightly higher than that of the t-test. The type I error rates of the t-test and the percentile bootstrap method were slightly lower than the significance level and the powers of the two tests were also slightly lower than that of the theoretical t-test. On the other hand, the type I error rate and power of the standard error Bootstrap method were the same as those of the theoretical t-test and its power was .012 ~ .081 higher than that of t-test depending on experimental conditions.

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A comparative study on Self-esteem, Organizational commitment, Transformational leadership of ROTC Cadets: focus on a non-smoker and smoker (학군사관후보생의 자아존중감, 조직몰입, 변혁적 리더십 비교 -비흡연자와 흡연자 중심으로)

  • Yoon, Hong-Gyu;Do, En-Su
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.12
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    • pp.164-172
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    • 2017
  • This study was conducted to compare physical fitness, self-esteem, organizational commitment and transformational leadership among non-smoker and smoker ROTC cadets. This study used 425 questionnaires from male grade 3 and 4 ROTC cadets of 12 universities located in P city and G-do. Data were collected from May 1 to June 23, 2017. The data were analyzed by SPSS/WIN 23.0 using a ${\chi}^2-test$, independent t-test, and Pearson's correlation coefficient. Running 3km (t=3.26, p=0.046), self-esteem (t=1.06, p=0.003), organizational commitment (t=2.57, p<0.001) and transformational leadership (t=3.98, p<0.001) were significantly lower in the smoking group than the non-smoking group. There was a positive correlation between self-esteem, organizational commitment, and transformational leadership in both non-smokers and smokers. Therefore, to practice smoking cessation for the health promotion of ROTC cadets smokers, it is necessary to develop an effective education and intervention program that can enhance self-esteem, organizational commitment and transformational leadership.

The Effectiveness of a Spiritual Education for Spiritual Care Competence Reinforcement of Nursing Students (간호대학생의 영적간호역량 강화를 위한 영성교육의 효과)

  • Lim, Hyeon-Jeong;Park, Kyungsook
    • Journal of Digital Convergence
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    • v.19 no.1
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    • pp.261-274
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    • 2021
  • The purpose of this study is to examine the effects of spiritual education for spiritual care competence reinforcement of nursing students. 83 subjects of nursing students were participated in two universities located in J city(from February 27 to May 19, 2017) and composed of 42 in the experimental group and 41 in the control group. The spiritual education was composed of three sections; self-awareness, spirituality, and spiritual dimension in nursing. This program was then implemented on the subjects for a total of 10 sessions with each session lasting 120 minutes and given 2 times a week for 5 weeks. The data collected were analyzed for descriptive statistics, χ2-test, Independent t-test and Repeated ANOVA. This spiritual education increased the spirituality, ego-identity, spiritual well-being, satisfaction with life, and spiritual care competence of the nursing students. The effectiveness of the spiritual education also maintained in five weeks after intervention. It is therefore proposed that this education be utilized for the nursing students as basic standardization process of a spiritual nursing care.

BAYESIAN HIERARCHICAL MODEL WITH SKEWED ELLIPTICAL DISTRIBUTION

  • Chung, Youn-Shik;Dipak K. Dey;Yang, Tae-Young;Jang, Jung-Hoon
    • Journal of the Korean Statistical Society
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    • v.32 no.4
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    • pp.425-448
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    • 2003
  • Meta-analysis refers to quantitative methods for combining results from independent studies in order to draw overall conclusions. We consider hierarchical models including selection models under a skewed heavy tailed error distribution proposed originally by Chen et al. (1999) and Branco and Dey (2001). These rich classes of models combine the information of independent studies, allowing investigation of variability both between and within studies, and incorporate weight function. Here, the testing for the skewness parameter is discussed. The score test statistic for such a test can be shown to be expressed as the posterior expectations. Also, we consider the detail computational scheme under skewed normal and skewed Student-t distribution using MCMC method. Finally, we introduce one example from Johnson (1993)'s real data and apply our proposed methodology. We investigate sensitivity of our results under different skewed errors and under different prior distributions.

Effects of self-care intervention using a mobile instant messenger on hemodialysis patient's knowledge, self-efficacy, self-care behavior and physiological index

  • Yu Kyung Shin;Mi Young Kim
    • Journal of Korean Biological Nursing Science
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    • v.26 no.2
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    • pp.123-135
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    • 2024
  • Purpose: The purpose of this study was to examine the effects of self-care intervention using a mobile instant messenger on hemodialysis patient's knowledge, self-efficacy, self-care behavior and physiological indices. Methods: A non-equivalent control group pretest-posttest design was used. The participants consisted of 38 patients who had a regular hemodialysis of Seoul National University Hospital. They were assigned to one of two groups; an experimental group (n = 19) that had self-care intervention for 8 weeks and a control groups (n = 19) that had routine hemodialysis treatment. The data collection was conducted from September 5, 2022 to October 29, 2022. The date were analyzed by Chi-square test, Independent t-test, and Fisher's exact test using SPSS Win 29 program. Results: There was a significant difference in self-efficacy (t = 3.42, p = .002) between experimental and control groups. There was no significant differences between the two groups in knowledge (t = 0.80, p = .428), self-care behavior (t = 0.09, p = .929), potassium (t = -0.82 p = .416), phosphorus (t = -0.03, p = .974), weight gain (t = 0.16, p = .867). Conclusion: Based on above results, it was verified that self-care intervention in this study was an effective indicator in improving the self-efficacy. There is a requirement to formulate comprehensive interventions capable of enhancing various indicators.

The Effect of Burns' Cognitive-Behavioral Group Counseling on depression and anxiety of Industrial High School Students (전문계고 학생들의 우울과 불안 감소를위한 Burns의 인지-행동 집단상담의 효과)

  • Lee, Hee-Young;Kang, Sin-Hoon;Cha, Ta-Soon
    • Journal of Fisheries and Marine Sciences Education
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    • v.22 no.1
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    • pp.99-112
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    • 2010
  • This study was conducted to test the effect of Burns' cognitive-behavioral group counseling on depression and anxiety of industrial high school students. For this purpose, an experimental group and comparative group which was composed of 15 students respectively were assigned. The independent sample t-test between experimental group and comparative group about the degree of pre-test and after-test and the opposition sample t-test within each experimental group and comparative group were conducted. Analysis of Covariance was also applied. Results of the analyses showed that Burns' cognitive-behavioral group counseling program was effective in decreasing depression and anxiety. Implications of these results on student guidance and counseling were discussed. Suggestions for future research were presented and limitations were indicated.

The change of muscle dysmorphia through bodybuilding for 12 weeks : Korean college students

  • Kim, Deokjin
    • International Journal of Advanced Culture Technology
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    • v.7 no.2
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    • pp.1-6
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    • 2019
  • The central purpose of the current research is to identify how 12-week bodybuilding exercise affects muscle dysmorphia. The research subjects consisted of an experimental group and a control group, each with 16 freshmen at college. MDI(muscle dysmorphic inventory), developed by Schlundt, Woodford, Brownlee(2000) was utilized to collect relevant data, which was analyzed by PASW 18.0. An independent two sample t-test was conducted to see whether there exists any significant difference between the two groups in the pre- and the post-tests. A paired t-test, in turn, was performed to identify whether there is any difference between the two tests for each group. The statistical significance level was set at p<.05. It was found that the experimental group marked a higher level of muscle dysmorphia than the control group in the pre-test. It was also found that muscle dysmorphia of the experimental group increased in the post-test, while no significant difference was manifested in the control group in the post-test.

Factors influencing the ambulatory status in Hemiplegia with Intracerebral Hemorrhage after rehabilitation (뇌출혈으로 인한 편마비 환자의 재활치료 후 보행능력에 영향을 주는 요인)

  • Kim, Chan-Kyu;Kim, Kweon-Young
    • Journal of Korean Physical Therapy Science
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    • v.6 no.2
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    • pp.1007-1017
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    • 1999
  • The purpose of this study was to evaluate the factors influencing the ambulatory status in hemiplegia with intracerebral hemorrhage after rehabilitation. Thirty patients with stroke who was admitted in the Chosun University Hospital, between from January 1st' 1998 and December 31st' 1998, were included in this study. The following variables as a potential predictors for ambulation were evaluated at treatment of the stroke onset; 1) general characteristics including age and sex, and 2) clinical characteristics including frequency and onset time of the stroke, affected side, duration of the treatment, time interval between onset and rehabilitation, manual muscle test of paretic limb, sitting and standing balance, proprioception, perception, cognitive function. We compared and analyzed the these variables to the two type of ambulatory status at the time of the discharge by Modified Barthel Index, independent, dependent. The data were analyzed by student t-test, Fisher-exact test, Mann Whitney-U test, $X^{2}$-test, correlation analysis(spearman's). The results were as follows; 1. Were no significantly inflenced independent ambulatory status among general characteristics. 2. Frequency of the stroke and proprioception (p<0.05), muscle strength of the lower limb, cognitive function and standing balance (p<0.01), perception and sitting balance (p<0.001) were significantly inflenced independent ambulatory status among clinical characteristics. 3. Independent Variable correlated with the ambulatory status were muscle strength of the lower limb, proprioception and sitting balance (p<0.05), standing balance, frequency of the stroke, perception and cognitive function (p<0.01). Therefore the muscle strength of the lower limb, proprioception, sitting balance, standing balance, frequency of the stroke, perception, cognitive function were the most significant influencing factors of ambulatory status after rehabilitation.

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The Effects of the Industrial Nursing Practical Education Program Applying Online Collaborative Learning (온라인 협력학습을 적용한 산업간호 실습교육 프로그램의 효과)

  • Ha, Young-Sun;Park, Yong-Kyung;Kim, Kyeng-Jin
    • Journal of the Korea Convergence Society
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    • v.12 no.5
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    • pp.393-403
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    • 2021
  • This study examined the effect of the industrial nursing practical education program applying online collaborative learning on perceived motivation, problem-solving ability, and communication ability of nursing students in COVID-19 period. The study was carried out according a non-equivalent control group pretest-posttest design. The study subjects were 35 nursing college students from K City. Data collection was from October 19 to November 12, 2020. Collected data were analyzed using IBM SPSS 22.0 with the 𝑥2 test, Fisher's exact test, independent t-test, Mann-Whitney U test. The experimental group had significantly different perceived motivation, and problem-solving ability in comparison to the control group. This suggests that the industrial nursing practical education program applying online collaborative learning in the COVID-19 period can be applied as a way to increase nursing students' perceived motivation, and problem-solving ability.