• The Korean Journal of Pain
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• 제30권4호
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• pp.243-249
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• 2017

Pain is subjective, while statistics related to pain research are objective. This review was written to help researchers involved in pain research make statistical decisions. The main issues are related with the level of scales that are often used in pain research, the choice of statistical methods between parametric or nonparametric statistics, and problems which arise from repeated measurements. In the field of pain research, parametric statistics used to be applied in an erroneous way. This is closely related with the scales of data and repeated measurements. The level of scales includes nominal, ordinal, interval, and ratio scales. The level of scales affects the choice of statistics between parametric or non-parametric methods. In the field of pain research, the most frequently used pain assessment scale is the ordinal scale, which would include the visual analogue scale (VAS). There used to be another view, however, which considered the VAS to be an interval or ratio scale, so that the usage of parametric statistics would be accepted practically in some cases. Repeated measurements of the same subjects always complicates statistics. It means that measurements inevitably have correlations between each other, and would preclude the application of one-way ANOVA in which independence between the measurements is necessary. Repeated measures of ANOVA (RMANOVA), however, would permit the comparison between the correlated measurements as long as the condition of sphericity assumption is satisfied. Conclusively, parametric statistical methods should be used only when the assumptions of parametric statistics, such as normality and sphericity, are established.

• 한국생활과학회지
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• 제15권4호
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• pp.551-561
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• 2006

The purpose of the study is to examine the influence of children's familiarity with a task and teachers' feedback on their problem solving performances. It was assumed that children's' problem solving performance would be different depending on the children's familiarity with a task and the feedback from teachers. The study also examined whether children's' problem solving competence would be different depending on their gender and age. The experiment was conducted with two experimental tools. The subjects were 58 children who were 5 to 6-year-old, enrolled in kindergartens in Koyang city in Kyunggi province. The collected data were processed with SPSS 11.0 program to get the average and the standard deviations, and with one-way ANOVA and two-way ANOVA with repeated measures. The results of the experiment are as follows; First, children's' problem solving competence was different depending on their age. Older children showed higher performance than younger children, while there's no difference in children's performance depending on their gender. Second, the teachers' feedback didn't influence children's problem solving performance. Third, children showed higher performance when familiar tasks were provided, compared to when typical tasks were provided. Finally, this study found that children's task familiarity has an influence on their problem solving performance.

• 대한치과교정학회지
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• 제42권1호
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• pp.11-16
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• 2012

Objective: This study aimed to evaluate the mean age of menarche, its secular trend in Korean women, and the relationship between malocclusion and the rate of skeletal maturation, as defined by menarcheal age. Methods: We retrospectively collected data on menarcheal age from 931 Korean women born during 1961 - 1997. Subjects were divided by the malocclusion type and birth-year decade into 3 and 4 groups, respectively. The mean menarcheal age for each group was determined, and one-way ANOVA was performed for intergroup comparison (p = 0.05). Two-way ANOVA was also performed to compare all the 12 subgroups (p = 0.05). Results: The mean age of menarche was 12.82 years for Korean women born during 1961 - 1997. A distinct downward secular trend of menarcheal age was noticed (p < 0.05). For the birth-year decade 1961 - 1970, the Class III malocclusion group showed earlier onset of menarche than the other malocclusion groups (p < 0.05), but the other birth-year groups did not show any significant difference in the type of malocclusion (p > 0.05). Conclusions: A positive secular trend towards earlier menarche exists among Korean women. Malocclusion does not show any significant relationship with the rate of skeletal maturation, as defined by menarcheal age.

• 말소리와 음성과학
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• 제2권1호
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• pp.13-21
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• 2010

The purpose of this study was to examine the prosody characteristics of sentence-level utterances which contain homographs with context cues in patients with neurogenic communication disorders. Homographs which may be affected by prosody, especially tonic length features, were used to investigate this matter. The characteristics of tone, duration, pitch, and pitch peak were analyzed to examine the characteristics of prosody in patients with lesions in the left or right hemisphere and normal controls. The whole process was recorded using Praat 4.3.14 and for statistical analyses, three-way ANOVA and multiple comparative analyses, Chi-Square tests, and a one-way ANOVA were carried out using SPSS 12.0 for Windows. The conclusions of this study are as follows. First, the length of syllables and vowels in homographs in Korean was different depending on the meaning and was not significant between groups. Second, it was found that patients with lesions in the right hemisphere had significant difference on pitch. Third, it was found that frequency of pitch peak and tone in 'short' tone syllables were different between groups. The conclusion of this study found that the prosody of homographs between groups absolutely was not differentiated. Accordingly, more detailed studies of acoustic parameters and other parameters which the prosody characteristic between groups could be found are needed in the future.

• 말소리와 음성과학
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• 제3권3호
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• pp.149-155
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• 2011

The purpose of the present study was to identify the differences in GRBAS scales between vocal sample types (sustained vowels and connected speech) for specific laryngeal conditions (vocal nodules, vocal polyps and vocal paralysis) and the relations between GRBAS scale and Shimmer value in each vocal sample type. In this study, the total of 60 voice samples of 30 patients (10 vocal nodules, 10 vocal polyps, 10 vocal paralysis) were examined and MDVP (Multi-dimensional Voice Program) was used to analyze Shimmer value. Three listeners rated two types of samples which were sorted randomly based on GRBAS scale. Three-way ANOVA, one-way ANOVA and paired t-test were used. The outcome of this study was as follow. 1) GRBAS scales varied in vocal sample types. Listeners tended to assess voices as better quality when they listened connected speech rather than sustained vowels. 2) G score of GRBAS and Shimmer were positively correlated with statistical significance. This results show that 1) vocal specialists should consider the sample types in evaluating the severity of voice problem and 2) G score could be a simple and clear method.

• 아동학회지
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• 제15권1호
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• pp.187-203
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• 1994

This study investigated the relation of androgynous parent's child-rearing practices to children's self-perceived competence by comparison of the effectiveness of androgynous people as parents compared with parents who are other-typed in their sex-role identity. The subjects were 362 third and sixth grade children and their parents selected from two elementary schools in Seoul. The instruments were a children's self-perceived competence scale, a perception of maternal warmth and control scale, a perception of paternal warmth and control scale, parent's self-esteem scale, and parent's sex-role identity scale. Frequencies, percentiles, mean, ${\chi}^2$ test, two way-ANOVA, one way-ANOVA, Cronbach's ${\alpha}$ and $Scheff{\acute{e}}$-test were used for data-analysis. The major findings showed that (1) Androgynous and masculine fathers had higher self-esteem than feminine or undifferentiated fathers. Androgynous, masculine, and feminine mothers had higher self-esteem than undifferentiated mothers. (2) There was no difference in children's perception of parental warmth and control as related to parent's sex-role identity. Androgynyous parents were not more likely to be authoritative parents. (3) Sons of androgynous parents had higher self-perceived competence than those of sex-typed parents, while daughters of sex-typed parents had higher self-perceived competence than those of androgynous parents.

• 한국보육지원학회지
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• 제15권1호
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• pp.15-35
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• 2019

Objective: The purpose of this study was to examine how children's creativity varies depending on gender and intelligence. Methods: The participants of this study were 100 five-to-six-year-olds from a kindergarten in city S. Collected data was analyzed using SPSS WIN 21.0 program. I conducted t-tests to examine differences in intelligence and creativity according to gender, and used two-way ANOVA for inspecting the differences according to gender and intelligence. Furthermore, I used additional one-way ANOVA for inspecting the interaction-effect of gender and intelligence concretely. Results: As a result, there are no differences in creativity according to a child's gender, but there are some variations in intelligence according to gender. In addition, the aspect of the relationship between children's creativity and intelligence varies according to gender. Conclusion/Implications: It is meaningful that this study determined that gender and level of intelligence influence an improvement in creativity. This study supplies variables and directions to be considered when an educational activity or program is developed for young children.

• Physical Therapy Rehabilitation Science
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• 제9권4호
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• pp.238-243
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• 2020

Objective: The purpose of this study was to confirm the validity of a respiratory retraining exercise using pressure biofeedback units among individuals with stroke as an effective intervention for improving quality of life. Design: Randomized controlled trial. Methods: Thirty patients with stroke were recruited as subjects. Among them, 15 patients were randomly assigned to an experimental group performing lumbar stabilization exercise and respiratory retraining exercise, and the other 15 patients were randomly assigned to a control group conducting only lumbar stabilization exercises. Exercises were conducted 3 times a week for 6 weeks, and quality of life was evaluated in the pre-test, 3 weeks and 6 weeks periods. The respiratory retraining exercises were performed using a pressure biofeedback unit and the degree of the quality of life was measured using the Stroke- Specific Quality of Life. For data analysis on the study results, a two-way repeated ANOVA was used in order to observe for changes in the measured variables according to time for both groups. If there was a reciprocal action between the groups and the time in the effect test within the entities, a one-way repeated ANOVA was implemented and was statistically processed. Results: There was a significant difference in the main effect test between the 2 populations depending on the duration of the experiment (6 weeks) (p<0.05). Conclusions: The above results showed that respiratory retraining exercises may provide positive effects in the treatment of stroke as the quality of life showed significant differences according to the duration of treatment.

• 대한정형도수물리치료학회지
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• 제29권2호
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• pp.39-48
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• 2023

Background: The position of pitcher requires a lot of repetitive motion, and because of this, it is known that not only professional baseball players, but also middle and high school players are frequently exposed to injuries in baseball. The purpose of this study is to examine the differences in upper extremity muscle activity during repeated pitching and the activity of each muscle during repeated pitching by analyzing middle and high school pitchers, divided into groups by age. Methods: Twenty participants (10 middle school male students and 10 high school male students) were recruited for this research. The outcome measures included neuromuscular motor control, including the upper trapezius (UT), triceps brachii (TB), deltoid (DT), latissimus dorsi (LD), biceps brachii (BB), pectoralis major(PM), extensor carpi radialis(ER), and flexor carpi radialis (FR). Results: The two-way analysis of varaince (ANOVA) was used to compare the muscle activity variables between the middle school and high school students. The one-way ANOVA was used to compare the muscle activity variables within time differences each groups. Conclusion: Our results provided promising clinical evidence that guide for upper extremity muscles to increase pitching efficiency in middle and high school base ball players.

• 대한치과보철학회지
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• 제55권4호
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• pp.394-402
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• 2017

목적: 의치상과 인공치가 밀링과 3차원 프린팅 방식에 의해 일체형으로 제작될 때 각기 인공치의 변위를 평가하고자 한다. 재료 및 방법: 밀링과 3차원 프린팅 방식으로 상하악 각기 12개의 의치를 제작하였다. 프린팅에 의해 제작된 상악의치 군은 Group Up이고, 하악의치군은 Group Lp이다. 밀링에 의해 제작된 상악의치 군은 Group Um이고, 하악의치 군은 Group Lm이다. 대조군 상악의치는 소프트웨어상에서 최종적으로 디자인된 것으로 상악은 Group Uc이고 하악은 Group Lc이다. 상하악 의치의 양중절치 사이(AB, ab), 양견치 사이(CD, cd), 양제1대구치 사이(EF, ef), 중절치와 제1대구치사이(AE, ae) 및 중절치와 설측점사이(AG, ag) 의 거리를 측정하였다. 결과: AG와 ag는 상하악 의치 모두에서 프린트된 의치군과 컨트롤 의치군 사이에서 뿐 만 아니라 밀링 의치군과 컨트롤 의치군 사이에서도 통계학적 유의성을 나타내었다(One-way ANOVA, P < .05). 하악 일체형의치에서는 Group Lp와 Group Lm 사이에 ab, cd, ef 모두 통계학적 유의성을 나타내었다. 결론: 밀링과 3차원 프린팅에 의해 제작된 의치의 인공치 변위는 통계학적 유의성이 나타났으나, 임상적으로 매우 양호한 변위량을 보여주었다.