• Title/Summary/Keyword: T-test analysis

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Characteristics of Muscle Strength and Posture among Automobile Parts Manufacturing Workers and the Necessity of the Musculoskeletal Injury Prevention Program (근골격계질환 예방프로그램의 필요성과 자동차 부품 제조업 근로자들의 근력과 자세의 특성 연구)

  • Kwon, Il-Ho;Shin, Won-Seob
    • Journal of the Korean Society of Physical Medicine
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    • v.14 no.4
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    • pp.173-181
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    • 2019
  • PURPOSE: This study examined the necessity of a musculoskeletal injury-prevention program for automobile parts manufacturing workers by assessing the body composition, muscle strength, and posture according to sex and age. METHODS: Two hundred eighty-two workers (men, 218; women, 64; mean age, 38.97 years; and mean work tenure, 10.29 years) participated in this study. They completed a questionnaire on their general characteristics, excluding personal identification codes. The participants were evaluated for body composition, muscle strength, and posture using InBody, a hand dynamometer, and the Image J program through photography, respectively. An independent t-test and one-way analysis of the variance were used for the comparisons according to sex and age, respectively. RESULTS: Significant sex-related differences in muscle strength and grip force were observed (p<.05). In addition, the left-side pelvic inclination was significantly higher in the female participants than in the male participants (p<.05). Significant age-related differences in the skeletal muscle mass and muscle strength were observed around 40 years (p<.05). Significant correlations were observed among the body composition (skeletal muscle and body fat masses), muscle strength, and posture (pelvic inclination; p<.01). CONCLUSION: Significant differences in pelvic inclination by sex and muscle strength by age were found, even in healthy workers. Additional posture and muscle strength measurements will be needed for workers who participate in the musculoskeletal injury prevention program because they are exposed to an incorrect posture for many hours or in many repetitive tasks.

The Basic Study for Building the Depression Prescription Guideline of Gamiguibi-Tang - The Evaluation of Reliability and Validity of the Depression Pattern-Identification Questionnaire - (가미귀비탕(加味歸脾湯)의 우울증 투약지침 개발을 위한 기초연구 - 우울증 변증 설문지의 신뢰도 타당도 평가 -)

  • Koo, Byung-Soo;Lee, Sang-Jae;Han, Chang-Ho;Kim, Ho-Jun;Park, Se-Hwan
    • Journal of Oriental Neuropsychiatry
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    • v.20 no.4
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    • pp.1-13
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    • 2009
  • Objectives : As depression falls into the category of Wuljeung, Gamiguibi-Tang(Jiaweiguipitang) is the standard prescription to cure Wuljeung. This study develops a questionnaire for building the guidelines to administer Gamiguibi-Tang to depression and evaluates reliability and validity of questionnaire. Methods : With extracting the text related to depression and Gamiguibi-Tang through total 9 Korean medicine books and consulting the experts, the study selected 80 items and converted them into a questionnaire. It surveyed the neuropsychiatry professors and the medical specialists three times by Delphi method, and lastly selected 21 final items of a questionnaire. On the basis of the questionnaire, it collected total 216 samples and tested their reliability and validity. Results : 21 items all didn't reduce total Cronbach alpha coefficient and satisfied test-retest reliability. As a result of factor analysis, totally 5 factors were extracted such as mental state, sleep, accompaniment, fatigue and weakness. Finally, in comparing a depression group with a normal control group, two groups all showed meaningful difference in each 21 items' point, the sum of factor 1 to 5 items' points, and the sum of 21 items' points. Conclusions : The questionnaire on the updated depression prescription guideline of Gamiguibi-Tang satisfied both of reliability and validity. Later it can help objectifying to apply Gamiguibi-Tang to depression cure.

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The Effects of Emotional Intelligence of Adolescents on Their Aggressiveness and Interpersonal Relationships (청소년의 정서지능이 공격성과 대인관계에 미치는 영향)

  • Lee, Jae-Moon;Jo, Yeong-Gu;Lee, Eun-Mo
    • The Journal of Korean Society for School & Community Health Education
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    • v.15 no.2
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    • pp.77-89
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    • 2014
  • Objectives: This study examined the effects of middle school students emotional intelligence on their aggressiveness and interpersonal relationships. Methods: Data were collected by questionnaires from 316 middle school students in Daegu city. To analyze the sample survey data, descriptive statistics, t-test, ANOVA, pearson correlation coefficient and simple regression analysis were performed with SPSS/PC 18.0 program. Results: First, among the general characteristic differences, academic achievement and economic status yielded a significant difference in emotional intelligence. Gender, economic status, and educational background produced a significant difference in aggressiveness, while gender, academic achievement, and economic status showed a significant difference in interpersonal relationships. Second, an examination of the correlation among emotional intelligence, aggressiveness, and interpersonal relationships found that the higher the emotional intelligence, the lower the aggressive, and the higher the interpersonal relationships. Third, general characters and emotional intelligence explain 22% of agressiveness. Gender, age, economic status, and emotional intelligence have a significant influence on agressiveness. Fourth, the general characters and emontional intelligence explain 45,5% of interpersonal relationships. The economic status and emotional intelligence have a significant influence on the interpersonal relationship. Conclusion: Based on the results, the study is of great importance, in that it provides the basis for future studies, which can be used to help school teachers and students' parents understand the importance of adolescents emotional intelligence and promote the students' quality school life.

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Differences in Sexual Attitudes, Sexual Permissiveness and Sexual Behaviors among Female High School Students According to Mass Media Consumption (여자고등학생의 대중매체 소비에 따른 성태도, 성허용성, 성행동의 차이)

  • Jung, Seungmin;Kim, Hye-Jin
    • Journal of the Korean Society of School Health
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    • v.33 no.1
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    • pp.1-9
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    • 2020
  • Purpose: sexual permissiveness, sexual behaviors and the consumption of mass media in female high school students. Methods: 306 students, from three different girls' high schools in Seoul, who understood the purpose of the study, participated as subjects in the research. The research tools were the mass-media consumption scale, the sexual attitudes survey, the sexual permissiveness survey, and the sexual behaviors scale. The data were analyzed using descriptive analysis, t-test, ANOVA with SPSS/WIN. 18.0 program. Results: The subjects' daily mass media consumption was 143.7 minutes of TV watching on weekdays, while 253.9 minutes on weekends, 88.5 minutes of Internet surfing, 57.8 minutes of listening to pop music. Watching TV music programs was 68.3 minutes a week. Watching TV 'alone' was 30.7% and Internet surfing in one's 'own room' was the highest at 39.9%. The average score of sexual attitudes, sexual permissiveness, and sexual behaviors was 25.7/55, 35.4/64 and 0.7/10, respectively. Sexual attitudes and sexual permissiveness varied according to how much time they spent surfing the Internet, with whom they watched TV, and how much time they spent listening to popular music; and sexual behavior differed according to the time spent on the Internet. Conclusion: Educational programs need to be developed to help young people control their media consumption behaviors. In addition, political attention and a proper system are needed to promote a healthier and sounder pop culture through a public review system.

Analysis of Travel Modal Choice and the Temporal Transferability for Workers (취업자의 1일 통행수단선택 분석 및 모형의 시간이전성 검토)

  • 김대웅;배영석;이명미
    • Journal of Korean Society of Transportation
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    • v.17 no.5
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    • pp.19-32
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    • 1999
  • In this study, the trip characteristics of workers in the city are systematically analyzed. The trip behaviors and socioeconomic characteristics of workers are analyzed using Person Trip Survey Data of 1988 and 1992 in Taegu Metropolitan area. With the results of behavioral analyses, the daily travel pattern of workers is shown as one tour contained two trips and it is relatively simple and stable. Also the rate using the same mode in a day is Presented as high ratio. So, it can be explained that the choice of worker\`s first trip is fixed his/her travel mode for his/her daily travel mode. Based on these analyses, the mode choice model for workers is developed by applying the Multi-nominal Logit Model with the choice set of bus, taxi, and car. The explanatory variables of this model include sex, age, auto, travel time, and cost. Empirical tests of the model show encouraging results. After that, the temporal transferability of the model is examined by the Pairwise t-test and five indexes far the model of 1988 and 1992. The results of examination are satisfied with each significance level of the explanatory variables and five indexes. Therefore. it can be concluded that the temporal transferability of this model developed in this study is resonable.

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The Significance of Serum Carcinoembryonic Antigen in Lung Adenocarcinoma

  • Kim, Jae Jun;Hyun, Kwanyong;Park, Jae Kil;Moon, Seok Whan
    • Journal of Chest Surgery
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    • v.48 no.5
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    • pp.335-344
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    • 2015
  • Background: A raised carcinoembryonic antigen (CEA) may be associated with significant pathology during the postoperative follow-up of lung adenocarcinoma. Methods: We reviewed the medical records of 305 patients who underwent surgical resections for primary lung adenocarcinoma at a single institution between April 2006 and February 2013. Results: Preoperative CEA levels were significantly associated with age, smoking history, pathologic stage including pT (pathologic tumor stge), pN (pathologic nodal stage) and overall pathological stage, tumor size and differentiation, pathologically positive total lymph node, N1 and N2 lymph node, N2 nodal station (0/1/2=1.83/2.94/7.21 ng/mL, p=0.019), and 5-year disease-free survival (0.591 in group with normal preoperative CEA levels vs. 0.40 in group with high preoperative CEA levels, p=0.001). Preoperative CEA levels were significantly higher than postoperative CEA levels (p<0.001, Wilcoxon signed-rank test). Postoperative CEA level was also significantly associated with disease-free survival (p<0.001). A follow-up serum CEA value of >2.57 ng/mL was found to be the appropriate cutoff value for the prediction of cancer recurrence with sensitivity and specificity of 71.4% and 72.3%, respectively. Twenty percent of patients who had recurrence of disease had a CEA level elevated above this cutoff value prior to radiographic evidence of recurrence. Postoperative CEA, pathologic stage, differentiation, vascular invasion, and neoadjuvant therapy were identified as independent predictors of 5-year disease-free survival in a multivariate analysis. Conclusion: The follow-up CEA level can be a useful tool for detecting early recurrence undetected by postoperative imaging studies. The perioperative follow-up CEA levels may be helpful for providing personalized evaluation of lung adenocarcinoma.

A study on the Relationship between Intelligence-Socio-economic status, Physical Constitution and Clothing Behaviors of Middle School Girls (의복행동과 지능$\cdot$사회경제적 지위 및 체격과의 관계 연구 -대구시 여자중학생을 중심으로-)

  • Lim Sook Ja;Kwon Young Nam
    • Journal of the Korean Society of Clothing and Textiles
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    • v.10 no.2
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    • pp.37-50
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    • 1986
  • The purpose of this study is to compare and to analyse the difference of middle school girls clothing behaviors and their preference for clothing styles according to their intelligence, socio-economic status, and physical constitution. For the study, data were collected from 378 middle school girls resided in Taegu: one half from high intelligence group over I.Q. 113, others from low intelligence group under I.Q. 87 using the questionaire method. For the measurement of the relationship clothing behavior, socio-economic status. Rohrer index, preference style of clothing were examined. The analysis of the data was managed by computer; frequency, percentage, mean, standard deviation, t-test, and ANOVA. The results of the study are as follows; 1. The significant difference in clothing behavior according to intelligence was verified in four: modesty, comfort, management, and psychological dependence. 2. The significant difference in clothing behavior according to socio-economic status was verified in all of eight clothing behavior variables. 3. There was no significant difference according to physical constitution in all clothing behavior variables. 4. There was no significant difference in the preference styles of clothing according to intelligence, but high intelligence group took more interest in detailed factors; design, style, total combination, color, print, and comfort. 5. The upper and middle class preferred slacks and lower class preferred skirts. The upper class took interest in design-style, total combination, and comfort, the middle class in total combination. and comfort, and the lower class in total combination. 6. Thin group preferred skirt, the average group preferred slacks, fatty group preferred slacks and shirts-blouse. Thin group took interest in design-style, and color-print, the average group in total combination, and fatty group in total combination, color-print, and design-style.

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Effects on the school dental clinic operation for children's oral health (학교구강보건실 운영이 아동의 구강건강에 미치는 영향)

  • Min, Hee-Hong;Min, Se-Hong
    • Journal of Korean society of Dental Hygiene
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    • v.10 no.3
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    • pp.495-502
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    • 2010
  • Objetives : It tries to grasp whether the knowledge and attitude about the oral health of the school dental clinic operation school and non-operation school with 6 grade children in Daejeon Metropolitan City and the school dental clinic operation reaches any influence to the oral health of the child or not. Methods : The self-administered survey was performed for the school dental clinic operation group (201 people) and non-operation group (207 people) child 408 people from October 5th in 2009 until October 31st. By using the spss statistical program(VER 15.0), the statistical analysis performed the chi-square verification and t-test. Results : 1. The knowledge degree about the oral health according to the oral health education is the health education experienced group $22.34{\pm}3.36$ and non-experienced group $20.32{\pm}3.49$ (p=0.000), and the attitude showed the health education experienced group $15.06{\pm}2.99$ and non-experienced group $13.30{\pm}3.20$, oral health education experienced group significantly higher in the knowledge and the attitude, there was statistically significant difference(p=0.000). 2. The knowledge degree about the oral health according to the school dental clinic operation is school dental clinic group $22.84{\pm}2.92$ and non-school dental clinic group $20.83{\pm}3.73$ (p=0.000), and attitude showed high the school dental clinic group as the school dental clinic group $15.48{\pm}2.75$ and non-school dental clinic group $13.76{\pm}3.26$, there was statistically significant difference (p=0.000). Conclusions : The knowledge degree and attitude about the oral health showed high in oral health education experience group and the school dental clinic group when looking at the result described in the above. It thinks that the school dental clinic group has to be expanded for the oral health promotion of the children.

Effects of school incremental dental care program (학교구강보건실 운영 효과에 관한 조사)

  • Lee, Jung-Hwa;Kim, Jin-Bom;Cho, Gab-Suk
    • Journal of Korean society of Dental Hygiene
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    • v.10 no.3
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    • pp.465-471
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    • 2010
  • Objectives : This study was conducted to purpose the fundamental data for further developments of the school dental clinic program(SDCP) through comparing results of oral health promotion program for 4 years relating to compare oral health status of children who had experienced and had not experienced the program. Methods : The subjects were 66 children of elementary school in Busan Metropolitan City who had benefited school dental clinic program(SDCP) from 2004 to 2007 and control group was 98 children of elementary school who had not benefited school dental clinic program(SDCP). Data analysis were done with SPSS program (ver 13.0) through basic statistical data, t-test. Results : The DMF rate of elementary school students who had benefited program was 41.5% and it was lower than that of control group(52.5%), however it was not significant statistically. The DMT index of elementary school students who had benefited program was 1.81 and it was lower than that of control group(2.44)(p<0.05). The DMFT rate of elementary school students who had benefited program was 4.44% and it was lower than that of control group(7.45%)(p<0.05). Conclusions : In oder to promote oral health of children, school dental clinic in elementary school should be extended to more elementary schools as possible and the operating system should be changed to improve the efficiency. Oral health educational materials should be developed and utilized to improve educational effect.

A study on the oral health of some disabled people with mental retardation (일부 정신지체 장애인의 구강건강에 관한 연구)

  • Park, Il-Soon
    • Journal of Korean society of Dental Hygiene
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    • v.9 no.1
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    • pp.27-43
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    • 2009
  • Purpose : The purpose of this study was to examine the oral health state of disabled people with mental retardation in an attempt to pave the way for oral health care planning geared toward the disabled. Subjects and Method : The subjects in this study were 46 mentally retarded people who attended rehabilitation centers for the disabled in the city of Wonju, Gangwon Province. After a survey was conducted, the collected data were analyzed with SPSS 13.0 program, and frequency analysis, percentage, ANOVA and t-test were utilized. Results : The findings of the study were as follows: 1. The simplified oral hygiene index of the mentally retarded people was 1.32, which was on the average. 2. The decayed teeth index and decayed teeth rate of the mentally retarded people were respectively 13.48 and 48.13 percent, which were above the average. 3. The decayed surface index and decayed surface rate of the mentally retarded people were respectively 27.17 and 17.39 percent. 4. The simplified debris index of the mentally retarded people significantly varied with gender(p<.01), and missing teeth index(p<.05) and missing surface index differed significantly with age. Filled surface index was significantly different according to the region. Conclusion : The findings of the study illustrated that their indexes related dental caries experience were high. In order to promote the oral health of the disabled with mental retardation, prolonged research should be implemented, and a dental checkup should be carried out on a regular basis by specialists. Preventive care and early treatment should be provided, and the development of customized oral health education programs tailored to different sorts of disabilities and oral health control methods is required.

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