• Restorative Dentistry and Endodontics
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• 제49권2호
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• pp.21.1-21.8
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• 2024

Objectives: This paper aims to serve as a useful guide for sample size determination for various correlation analyses that are based on effect sizes and confidence interval width. Materials and Methods: Sample size determinations are calculated for Pearson's correlation, Spearman's rank correlation, and Kendall's Tau-b correlation. Examples of sample size statements and their justification are also included. Results: Using the same effect sizes, there are differences between the sample size determination of the 3 statistical tests. Based on an empirical calculation, a minimum sample size of 149 is usually adequate for performing both parametric and non-parametric correlation analysis to determine at least a moderate to an excellent degree of correlation with acceptable confidence interval width. Conclusions: Determining data assumption(s) is one of the challenges to offering a valid technique to estimate the required sample size for correlation analyses. Sample size tables are provided and these will help researchers to estimate a minimum sample size requirement based on correlation analyses.

• 대한물리의학회지
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• 제9권3호
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• pp.263-270
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• 2014

PURPOSE: The purpose of this study was to examine the immediate changes in the weight-bearing ankle dorsiflexion range of motion (ROM) and the dynamic balance in asymptomatic subjects using the modified Star Excursion Balance Test (SEBT) after ankle balance taping (ABT) and placebo ABT with kinesiology tape METHODS: A total of 23 active participants (11 men, 12 women) volunteered for this study. Ankle flexibility was assessed using the weight-bearing lunge test, and dynamic balance was assessed using the modified SEBT. Participants were asked to respond to questions regarding their perception of stability, reassurance, and confidence when performing modified SEBT. RESULTS: The weight-bearing ankle dorsiflexion ROM did not show a significant decrease after real ABT or placebo ABT compared to the ROM prior to ABT. The anterior, posterolateral, and posteromedial reach distances of SEBT did not increase significantly after real ABT or placebo ABT compared to the distances prior to ABT. However, the participants' perception of stability, reassurance, and confidence, when performing SEBT with real ABT, was increased compared to that during the control trial. CONCLUSION: This study showed that although real ABT did not immediately improve the reach distances in the 3 directions during modified SEBT, it improved the participants' perception of stability, reassurance, and confidence without decreasing weight-bearing ankle dorsiflexion ROM.

• Child Health Nursing Research
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• 제9권2호
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• pp.206-220
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• 2003

Purpose: this study was intended to search the relationship between perception of the infant temperament in mother of infant at the age of 1～12 months and maternal confidence and satisfaction in performing maternal role, and to submit a basic data to establish a nursing intervention program which is helpful for determination of infant development and performing maternal role promotion by identify variables associated with infant temperament. Method: The subjects of this study were 300 mothers of infant at the age of 1～12 months who visited well baby clinic in 4 hospitals in Busan city and Kyoung-Nam province. Final analysis was performed in 293 cases. Seven cases was excluded in this study because of its inappropriate data collection. The data was collected from 1st July to 15th August 2002. The questionaries which were fill-up by mother were collected. Infant temperament was measured by using the tool of 'what my baby is like'(WBL) which was developed by Priham et. al.(1994) and translated by Bang(1999). The scale of postpartum self evaluation which was developed by Lederman et al(1981) and translated by Lee(1992) was used for the confidence and satisfaction of maternal role. All statistical analyses were performed using SPSS-PC for window, version 10.0: frequency, percentage, minimum, maximum, mean, SD, t-test, ANOVA, Post-hoc test(Scheffe's test), Pearson Correlation Coefficients. Result: The mean score of maternal perception of the infant temperament was 6.17±1.04, and mother recognized her infant as positive. The mean score of confidence of maternal role was 2.89± .41 and this revealed in an average level. The mean score of satisfaction of maternal role was 3.29± .51 and this revealed in a higher level. There was a weak significant positive correlation between the score of maternal perception of infant temperament and confidence of maternal role(r=0.176, P= .003), but there was no significant correlation between satisfaction of maternal role(P> .05). It revealed the more maternal perception of the infant temperament as positive, the higher confidence of maternal role. There was a moderate significant positive correlation between confidence of maternal role and satisfaction of maternal role(r=0.410, P= .000). It revealed the more confidence of maternal role, the higher satisfaction of maternal role. The variables related with the score of maternal perception of infant temperament were the type of delivery (t=-2.600, P= .010), experience of learning baby care(t=2.382, P= .018), maternal perception on baby's health status(F=3.467, P= .033), maternal perception on her health status(F=3.467, P= .027), baby's age(F=3.080, P= .028). Conclusion: Our result showed the confidence of maternal role was increased as the maternal perception of infant temperament was positive, and conformed that the confidence of maternal role was also related with satisfaction of maternal role. Prenatal education, type of delivery, baby's age were also related with the maternal perception of infant temperament. So, nursing intervention program of developmental stage maybe necessary in order to help maternal perception of infant temperament as positive, and it will be increased the confidence of maternal role and satisfaction of performing maternal role which was considered as real indicate of achievement of maternal role.

• 한국시스템다이내믹스연구
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• 제5권2호
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• pp.175-197
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• 2004

The research studies the classic beer game simulation model from a new perspective. It does so by providing each agent with two ordering policies, and creating a set of rules that allow an agent to change its policy. Such a change is triggered based on an agent's confidence in their own performance, and on the relative confidence of their nearest neighbour. The overall effect is that policy diffusion can occur, where, under certain circumstances, an agent will mimic the behaviour of its neighbour, if it believes that its neighbour is performing better. The motivation behind this research is to provide an experimental base upon which the decision making strategies of business agent can be studied.

• 응용통계연구
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• 제19권2호
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• pp.339-347
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• 2006

혼합물실험에서 제한된 영역 때문에 공선성문제가 발생하면 회귀계수에 대한 추정값이 매우 불안정하게 되므로 이를 해결하기 위하여 우리는 주로 능형추정량을 사용한다. 이 때 붓스트랩 기법을 사용하면 능형추정량에 대한 붓스트랩 신뢰구간을 구할 수 있다. 본 논문에서는 제한된 영역을 갖는 혼합물실험의 한 예를 통하여 붓스트랩 잔차 방법과 붓스트랩 쌍 방법 각각에 대하여 능형회귀추정량에 대한 붓스트랩 신뢰구간을 구하고 서로 비교하였다.

• 한국간호교육학회지
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• 제16권2호
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• pp.339-346
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• 2010

Purpose: Bystander cardiopulmonary resuscitation (CPR) improves survival. However, there have been few studies on the performance of bystander CPR in Korea. This study was done to identify the reasons for being unwilling to perform CPR, and to investigate the factors associated with performing CPR on a stranger in an emergency situation. Method: The participants in this study were 444 local residents. Data were collected by using self-reported questionnaires from May 1 to June 30, 2010. For data analysis, descriptive statistics and multiple logistic regression were performed using SAS version 9.1. Result: Only 32.2% of respondents reported being willing to perform CPR on a stranger. The major reason for not being willing to perform CPR on a stranger was "have no confidence to perform CPR well". From multiple logistic regression analysis, statistically significant predictors of CPR performance on a stranger were found to be a higher educational level (OR=6.11, 95% CI 1.46-25.52), neighbors with angina pectoris or myocardial infarction (OR=6.65, 95% CI 3.93-11.24), and having confidence of performing CPR (OR=3.02, 95% CI1.78-5.14). Conclusion: CPR education (including automatic external defibrillator) should be offered to family members and neighbors. In addition, the Good Samaritan Law must be given wider publicity at the national level.

• 한국간호교육학회지
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• 제11권2호
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• pp.278-286
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• 2005

Purpose: The purpose of this study was to find out the effectiveness of the CPR training for non-healthcare providers by checking the performing ability of the subjects before and after the teaching class. Method: This study was a single primary experimental study designed with pre and post test. Study subjects were 37 office staffs who participated in all test from March, 10th, 2005 to April, 18th, 2005. The tools of this study were CPR performing evaluation sheet and CPR teaching computer program. Data analyzed by descriptive statistics, t-test, repeated ANOVA and Bonferroni with SPSS 12.0 program. Result: The CPR practice performing ability statistically significant increased by the step of test. The CPR practice performing ability of learning experience group had significantly high score than non experience group. The self-confidence about CPR practice when faced emergency situation was increased after practice training. Conclusion: One to one CPR practice teaching method using simulation by CPR teaching specialists was turned out to be very effective in improving the ability of CPR practice of non-healthcare providers in a tertiary hospital than self-study.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.229-237
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• 2021

This study aimed to help build a quality control program to improve cardiac arrest treatment via analysis of medical records in a local tertiary general hospital to evaluate factors that influence clinical outcomes of in-hospital cardiac arrest. At first, the medical records of in-hospital cardiac arrest were analyzed, and targeted surveys about functional and structural factors associated with cardiopulmonary resuscitation (CPR) were conducted amongst the workforce in charge of cardiac arrest treatment. From January 2012 through June 2013, a total of 486 adult cases of in-hospital cardiac arrests, except for those occurring in the emergency room, were enrolled in this study. Among the patients, those of recovery of spontaneous circulation were 57.8%; 13.8% of patients were discharged alive; 8.9% of patients were discharged without significant neurologic sequela. Despite CPR is usually successful when administered as quickly as possible, in this analysis showed that prompt reaction after initial recognition was significantly lower in nurses compared with doctors. Analysis of survey results showed that confidence in performing CPR was significantly associated with the experience of CPR in doctors, while in nurses educational experience showed a correlation. In order to improve quality of in-hospital CPR system maintaining and increasing confidence of CPR performance is the most important factor. Therefore it can be helpful to develop and apply a phased, customized education program using training simulators as well as personalizing them to increase the personnel's confidence in CPR performance.

• 디지털융복합연구
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• 제16권6호
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• pp.241-250
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• 2018

본 연구는 간호대학생의 기본간호술 중요성 인식, 자기주도적 학습능력, 기본간호술 수행자신감 간의 관계 및 기본 간호술 수행자신감의 영향요인을 파악하기 위해 시도되었다. 자료수집은 2017년 12월 18일부터 22일까지 G군 소재 간호대학생 171명을 대상으로 하였다. 자료분석방법은 t-test, ANOVA, Pearson 상관관계, 단계적 다중회귀분석을 사용하였다. 분석결과 기본간호술 수행자신감은 기본간호술 중요성 인식과 자기주도적 학습능력과 유의한 정적 상관관계를 나타냈다. 기본간호술 수행자신감에 대한 영향요인은 자기주도적 학습능력, 실습태도, 기본간호술 중요성 인식, 직전 학기 성적으로 총 변화량의 32%를 설명하였다. 본 연구를 통해 간호대학생의 기본간호술 수행자신감을 높이기 위해서 자기주도적 학습능력, 실습태도, 기본간호술 중요성 인식을 향상시킬 수 있는 다양한 교육 전략이 필요하다.

• 한국엔터테인먼트산업학회논문지
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• 제13권8호
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• pp.391-400
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• 2019

본 연구는 건강한 삶을 위하여 중학생 대상으로 한 심폐소생술 교육 전·후 수행자신감에 관한 연구이다. 본 연구에서 도출된 주요 연구결과를 중심으로 결론을 제시하면 다음과 같다. 성별에 따른 중학생의 심폐소생술 교육 전·후 수행자신감의 차이가 있었다. 교육을 받기 전 남학생과 여학생의 자신감에는 통계적으로 유의미한 차이를 발견하지 못했다. 그러나, 교육을 받은 후 남, 여 학생 모두 심폐소생술 수행 자신감이 높게 나타났다. 연구에서 심폐소생술 수행 교육과 심폐소생술 수행 자신감 간의 높은 양의 상관성을 보인 결과와 일치하는 것이다. 이 같은 결과는 최소 초등학생 고학년 이상의 연령 이후의 심폐소생술 교육은 심폐소생술 수행에 대한 긍정적인 태도와 자신감 형성에 중요한 요인임을 확인한 것이다. 이는 심폐소생술 수행 교육자 연령이 낮을수록 주위에 심정지 환자가 발생했을 때 망설임 없이 심폐소생술을 시행할 수 있는 자신감 형성과 관계가 있음을 알 수 있다. 이는 심폐소생술 수행 자신감 향상을 위해서는 중학생에게 심폐소생술 교육을 반드시 이수하도록 제도적인 장치를 마련해야함을 시사한다. 또한, 심폐소생술 교육 후의 평가방법 종류에 수행자신감 차이를 확인하기 위한 추가 연구도 수행되어야 할 것으로 생각된다.