• The Journal of Korean Physical Therapy
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• 제14권1호
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• pp.55-62
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• 2002

The purpose of this study was to determine the effects of the ultrasound on treatment of chronic sinusitis. 24 persons of men and women with chronic sinusitis divided into three groups of each 8 persons randomly and when were they were treated with the medication, the ultrasound(1MHz continuous wave, 1W/$cm^2$ intensity, three times per a week and once of three minutes circular stroke method) and the medication+ultrasound for 2, 4, 6 and 8 weeks. The results of this study were ad follows. 1. There was not statistical significant differences between the effects of treatment until two weeks(P>.05). 2. There was statistical difference between the effects of treatment after 4 weeks, 6 weeks and 8 weeks(P<.05). There was statistical significant difference between the group with ultrasound treatment and the group with ultrasound+medication treatment and there was statistical significant difference between the group with medication treatment and the group with ultrasound+medication treatment but there was not statistical significant between the group with ultrasound treatment and the group with medication treatment. 3. After 4 weeks, the highest effect for chronic sinusitis was group

• Communications for Statistical Applications and Methods
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• 제10권2호
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• pp.353-359
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• 2003

This paper deals with the problem of testing mean change with one change-point with the normal random variables. We propose a test with the mean difference for change in a location parameter. A power comparison study of various change-point test statistics is performed via Monte Carlo simulation with S-plus software.

• Journal of the Korean Statistical Society
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• 제36권3호
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• pp.397-410
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• 2007

For the two groups data from multivariate binomial distribution, we consider a bootstrap approach to inferring the simultaneous confidence level and its standard error of a collection of the dependent confidence intervals for the difference of proportions with an experimentwise error rate at the a level are presented. The bootstrap method is used to estimate the simultaneous confidence probability for the difference of proportions.

• Communications for Statistical Applications and Methods
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• 제7권1호
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• pp.297-312
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• 2000

A three stage sampling procedure designed to estimate the difference betweentwo normal means is proposed and evaluated within a unified decision-theoretic framework. Both point and fixed-width confidence interval estimation are combined in a single decision rule to make full use of the available data. Adjustments to previous solutions focusing on only one of the latter objectives are indicated. The sensitivity of the confidence interval for detecting shifts in true mean difference is also investigated Numerical and simulation studies are presented to supplement the theoretical results.

• Communications for Statistical Applications and Methods
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• 제11권3호
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• pp.447-454
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• 2004

In this paper, we consider the bootstrap method to the interval estimation of the difference of quantiles of right censored data. We showed the validity of bootstrap method and compare with others with real data example. In simulation various resampling schemes for right censored data are also considered.

• 보건교육건강증진학회지
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• 제20권3호
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• pp.19-35
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• 2003

The purpose of this study is to examine the effectiveness of video-and discussion-based smoking cessation intervention for adolescents. And this study is intended to provide a basic database for the development of health education, to serve health promotion for adolescent. The subjects were 472 high school students in K yungkido. The data was collected from September 23th to October 31 st, 2002. The data was collected by the measurement of knowledge, attitude, and intention toward smoking. Pre-research was conducted before smoking cessation education and post-research was performed twice, immediately after the education and 4 weeks later. Collected data was analyzed by using the SPSS 10.0 which is a computational statistical program. The results of this study are as follows： 1. Total knowledge points in smoking cessation program-based group are higher than any other groups and the statistical difference is significant. 2. The students' attitude points in experimental groups are higher than that of the control group and the statistical difference is significant. However, the meaningful statistical difference disappeared after 4 weeks. 3. The non-smoking students' intention points do not show any significant difference. And the smoking students' intention points in experimental groups are higher than that of the control group but the statistical difference is insignificant. 4. There are correlations among knowledge, attitude and intention toward smoking： knowledge and attitude are negatively correlated, knowledge and intention are positively correlated for non-smoking students, and for smoking students, attitude and intention have a negative correlation.

• East Asian mathematical journal
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• 제31권4호
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• pp.547-568
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• 2015

The purpose of this study is to analyze whether statistics and statistical education of intensive courses at the teachers college can improve elementary pre-service teacher' statistical attitudes. Findings on this study are as follows: First, there was meaningful difference in the elementary pre-service teacher' attitudes with significant level of 0.05. This proved that statistics and statistical education of intensive courses at the teachers college was effective on improving elementary pre-service teacher' attitudes. Second, there was meaningful difference in the pre-service math teacher' conception in the 2009 reformed curriculum for elementary mathematics.

• 대한물리치료과학회지
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• 제16권4호
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• pp.75-81
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• 2009

Background: The purpose of this study was to confirm whether surface FES was effective in the function of chronic stroke patients' affected shoulder and whether FES influenced their functional abilities in ADL, as well. Method: the subjects were inpatients at a general hospital in Gyeonggi-Do, Korea and had been diagnosed as a sub-luxation in their affected shoulder. They were 26 and were separated to an experimental group and a control group, in equal number. Both groups had gotten an exercise treatment for 6 weeks. The control group didn't get any FES as opposed to the experimental group. Result: in the experimental group there was no statistical significant difference in the vertical space and the joint space, even though the space was reduced. In the control group, there was no statistical significant difference, either. Moreover, each space of their shoulders was increased. In the range of motion of each group, there was no statistical significant difference. In functional independent ability, there was a significant difference in an experimental group. In contrast, there was no difference in a control group. Conclusion: this result suggests that FES should be effective in the sub-luxation of the patients' affected shoulder and the range of motion of their shoulders. On the other hand, compared to the previous items, FES was quite effective in the functional improvement.

• 한국도로학회논문집
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• 제17권4호
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• pp.135-141
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• 2015

PURPOSES: This study has been conducted to determine a homogeneous segment and integration to improve the efficiency of short-term traffic count. We have also attempted to reduce the traffic monitoring budget. METHODS: Based on the statistical approach, a homogeneous segment in the same road section is determined. Statistical analysis using t-test, mean difference, and correlation coefficient are carried out for 10-year-long (2004-2013) short-term count traffic data and the MAPE of fresh data (2014) are evaluated. The correlation coefficient represents a trend in traffic count, while the mean difference and t-score represent an average traffic count. RESULTS : The statistical analysis suggests that the number of target segments varies with the criteria. The correlation coefficient of more than 30% of the adjacent segment is higher than 0.8. A mean difference of 36.2% and t-score of 19.5% for adjacent segments are below 20% and 2.8, respectively. According to the effectiveness analysis, the integration criteria of the mean difference have a higher effect as compared to the t-score criteria. Thus, the mean difference represents a traffic volume similarity. CONCLUSIONS : The integration of 47 road segments from 882 adjacent road segments indicate 8.87% of MAPE, which is within an acceptable range. It can reduce the traffic monitoring budget and increase the count to improve an accuracy of traffic volume estimation.

• 한국한의학연구원논문집
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• 제18권2호
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• pp.55-64
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• 2012

Objectives: This study was performed to review the use of statistical analysis methods for the Traditional Korean Medicine studies listed on the Korea Citation Index from 1999 to 2008. Methods: A total of 4217 studies published on four journals of Traditional Korean Medicine were screened and 2682 articles using statistical methods were selected for the review. The selected studies were analysed according to their published year, statistical method and statistical package for use. Results: Statistical methods were used steadily in 64.6% of the articles after 2001, the most used statistical methods(57%) were mean difference comparison between 2 groups. The number of statistical methods mostly used in one article was identified as one in 1931 articles (72.0%). Duncan (36.8%) and Tukey (26.5%) were used for the ANOVA post hoc analysis. SPSS was most frequently used 68% out of Statistical package programs.(the number of mean difference comparison among more than 3 groups was continuously increasing and that makes post hoc being used. skills of statistical methods need to be diversified.) Conclusion: The interest on the proper use of statistical analysis in the research is increasing. This study will contribute to the Evidence-based Teaching on research methodology in Traditional Korean Medicine.