• 제목/요약/키워드: $\chi$$^2$-statistical test

검색결과 574건 처리시간 0.026초

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

  • 민희홍;민세홍
    • 한국치위생학회지
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    • 제10권3호
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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.

직접 부착법과 간접 부착법이 열순환 후 부착강도와 미세누출에 미치는 영향에 대한 연구 (Effects of direct and indirect bonding techniques on bond strength and microleakage after thermocycling)

  • Ozturk, Firat;Babacan, Hasan;Nalcaci, Ruhi;Kustarci, Alper
    • 대한치과교정학회지
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    • 제39권6호
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    • pp.393-401
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    • 2009
  • 본 연구는 직접 또는 간접 부착법으로 부착한 교정용 브라켓을 열순환 처리 후에 전단 결합 강도(shear bond strength, SBS)와 치아-접착제-브라켓 복합체의 미세 누출을 비교하기 위하여 시행하였다. 50개의 치아우식증이 없는 사람 소구치를 구하여 동등한 2개의 군으로 나누었다. 직접 부착군에서는 광중합 접착제 및 primer (Transbond XT)를 사용하였고 간접 부착군에서는 광중합 접착제와(Transbond XT) 화학중합 primer (Sondhi Rapid Set)를 사용하였다. 중합 후에 치아는 24시간 동안 증류수에 보관하였고 이후 500회 열순환 처리를 하였다. 미세누출의 평가를 위해 각 군에서 10개의 치아에 nail varnish로 추가 봉연을 실시하고 0.5% basic fuchsin에 24시간 동안 염색한 후 입체현미경으로 검경하였다. 만능시험기를 이용하여 각 군의 치아 15개로 SBS를 계측하였고 adhesive remnant index (ARI)를 평가하였다. 결과 자료는 Mann-Whitney U test, Chi-square test, Fisher's exact test로 통계 분석하였다. 직접 부착군과 간접 부착군 사이에 SBS 및 미세누출의 통계적으로 유의한 차이는 보이지 않았으며 간접 부착군에서 통계적으로 유의하게 ARI 점수가 낮았다. 브라켓의 탈락은 법랑질-레진 계면에서 발생하였다. 이상의 결과로 보아 부착법의 차이는 미세누출의 양과 SBS에 유의한 영향을 미치지 않는다.

부산·경남 지역 성인의 담낭용종 위험인자 및 초음파 영상의 형태학적 분석 (Analysis of Risk factors & Morphological Ultrasound Image for Gallbladder Polyp in Adults Living in Busan and Gyeongnam Provinces)

  • 안현;황철환;고성진;김창수
    • 대한방사선기술학회지:방사선기술과학
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    • 제39권3호
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    • pp.353-359
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    • 2016
  • 본 연구는 부산 경남지역에서 담낭용종의 위험인자 및 초음파영상의 형태학적 분포를 알아보고자 하였다. 실험 대상은 2016년 1월~5월까지 부산 P병원 내원환자의 복부초음파 영상을 대상으로 하였다. 그 중 복부초음파와 혈청학적 검사를 동시에 실시한 399명을 대상으로 위험인자를 분석하였다. 담낭용종 위험인자들의 통계분석은 독립표본 t검정(independent t-test)과 카이제곱 검정(chi-square test)을 시행하였다. 차이검정 결과를 고려하여 독립변수에 대한 상대 위험비(odds ratio, OR) 산출을 위해 다중 로지스틱 회귀분석(multiple logistic regression analysis)을 시행하여 변수들로부터 예측모형을 산정하여 타당성을 검정하였다. 그 결과 담낭용종 위험인자로 남성, HBsAg 양성, 중성지방이 관련이 있음을 알 수 있었다. 담낭용종의 위험인자로 확인된 남성, HBsAg 양성, 중성지방으로 예측모형 및 예측 확률값을 산정하였다. 예측확률의 민감도 61.0%, 특이도 76.8%를 보였으며, ROC 곡선의 AUC 결과는 0.735를 보여 예측모형의 타당성을 확인할 수 있었다. 복부 초음파검사 상 관찰되는 담낭용종의 형태학적 분석 결과는 고 에코, 유경, 균질한 형태가 가장 많은 분포(27.5%)를 나타내었으며, 용종 개수는 2개(38%), 크기는 5~10 mm (53%)로 가장 많았다. 담낭용종과 관련된 간질환으로는 mild fatty liver (23%), diffuse hepatopathy (21%)로 나타났다.

모델 스틸하우스 방문자의 주거가치관 분석 (A Study on Housing Value Orientation of Model Steel House Visitors)

  • 홍형옥
    • 대한가정학회지
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    • 제36권11호
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    • pp.119-128
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    • 1998
  • This study was designed to find tendencies of housing value orientation of the model steel house visitors. Questionnaires were collected in June, 1997, 1,550 in total, 508 cases from Seoul, 456 cases from Pohang, and 486 cases from Kwangyang. Data were analyzed in terms of housing value orientation, using statistical methods including frequencies, mean, percentages, chi-square test and multiple regression. The major findings are as follows; 1. The subjects were highly educated(64% of them were college graduates) with the monthly income over 2,000,000won(approximately $1,540). The average monthy income of the subjects in Seoul, about 4,000,000won($3,070), was much higher than that of other areas. Most of the subjects were condominium owners(72%), who preferred single detatched houses or town houses located in suburban areas. 2. Differences in general tendencies among the three regional groups were statistically significant. Most significantly, subjects living in Pohang regarded the reputation of the building construction company most importnat. Subjects of all three regional areas, especially in Pohang, emphasized investment value. The price of the steel house was regarded as very important by all the groups tested. The housing value orientation was analyzed in 3 aspects; (1) Facility.Plumbing.Structure(FPS), (2) Interior space formation.Design(ID) and (3) Developmental complex.Near Environment(DN). Interior environment level, stability of house structure, and finighing state of interiors were identified as the important factors in the area of FPS(p<.05). The Interior plan organization was the most important factor among ID. As for DN, rated importantly were educational facilities, green areas, convenience of commercial facilities within the developmental complex were rated importantly.

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일부 지역 노인 족부 건강 문제와 영향 요인 (Geriatric Foot Problems and Related Factors in Two Provinces of Korea)

  • 김신미;안재홍;최숙희;이윤정
    • 대한간호학회지
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    • 제40권2호
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    • pp.161-171
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    • 2010
  • Purpose: The purpose of the study was to identify the prevalence, risk factors and clinical meanings of geriatric foot problems and to suggest implications for the future. Methods: One hundred eighty nine elderly aged 60 and over from institution as well as community were investigated for their foot conditions by means of a questionnaire including general characteristics, self care capacity, risk factors, foot problem checklist, X-ray, podoscopy and foot scan. Descriptive statistics and $\chi^2$-test was performed as appropriate utilizing SPSS version 14. Less than .05 of p-value was adopted as statistical significance level. Results: All subjects had at least one kind of foot problem and the most prevalent ones were nail problems, foot deformities in order. Prevalence of foot pain and edema was relatively low. Conclusion: Foot problem in elderly is prevalent and geriatric foot is expected to emerge as one of the most important problems in the geriatric field. Therefore strategies to deal with geriatric foot should be developed and practiced for better quality of life in later life.

근무형태와 기능성 소화장애 및 월경이상 관련성 연구 (A Study on the Severity of Dysmenorrhea, Digestive Power according to the Shift Rotation)

  • 양나래;조정훈;이진무;이창훈;장준복;이경섭
    • 대한한방부인과학회지
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    • 제23권2호
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    • pp.95-105
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    • 2010
  • Purpose: The purpose of this study was to find out the correlation among Shift Rotation, dysmenorrhea and digestion function. Methods: We conducted a questionnaire survey of 161 nurses about their menstruation and digestion function from several hospitals from Oct to Nov in 2009. Using chi-square test and pearson correlation, statistical analysis was made by SPSS 12.0. We significance level p-value was determined as 0.05. Results: 1. There was no significant correlation between Shift Rotation and the severity of dysmenorrhea. 2. There was statistically mild correlation between Shift Rotation and digestion power. 3. There was statistically mild correlation between dyspepsia and the severity of menstruation. Conclusion: From above results, we could conclude that Shift Rotation, dyspepsia had mild relation to menstruation.

부모의 권위에 대한 아동의 지각 연구 (Children's Perception of Parental Authority)

  • 김경희
    • 아동학회지
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    • 제8권2호
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    • pp.45-60
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    • 1987
  • This research examined children's perception of parental authority within three different types of rules : moral, social-conventional, and personal issue. Specifically, two major aspects of parental authority-legitimacy and obedience-were explored. The subjects of this study were 120 children from an elementary school in Kwangju. There were 40 subjects (20 males and 20 females) in each of three age groups: 7-, 9-, and 11- year-olds. The subjects were administered an interview individually. Based on Tisak (1986) open-ended questions concerning three family rules (moral rule, social-conventional rule, personal issue) were administered. Responses to the assessment questions were coded as positive or negative. Responses to the judgment conception questions were coded into 7 categories : Other's Walfare, Social Coordination, Personal choice, Deservedness of Punishment for Wrongdoing, Existence of Authority, Conflicting Personal Interest and Authority, and Personal Development. Statistical analysis of obtained data was by percentage and ${\chi}_2$ test using log linear procedure. The results were as follows : (1) There was a significant main effect of type of rule on the children's assessment regarding legitimacy and obedience of parental authority. The children (average 96%) stated that it was all right for parents to make rules prohiliting an act when it pertained to moral and social conventions. However, the majority of the children (average 40%) stated that it was not right for parents to regulate personal issues. (2) There was a significant interaction effect between type of rule and age. (3) There was a significant main effect of rules on the children's judgment conception of parental authority. (4) There was a significant interaction effect between rules and ages on children's judgment conception of parental authority.

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洗濯관리에 영향을 미치는 가족환경변화에 관한 연구 (A Study on the Analysis of Family environmental Variables Affecting Laundering Management.)

  • 이정우;최동숙
    • 가정과삶의질연구
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    • 제2권1호
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    • pp.1-11
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    • 1984
  • The purpose of the study is to inquire how the family environmental variables are to influence on the behavior, time of laundering and laundering facilities in the urban households. Independent variables are limited to the number of family members, the are of the youngest child, the age of the home maker, and her educational level, family income , and the type of housing in which the family lives. The total of 222 samples were thus selected. The data was analyzed on the basis of statistical method such as percentage, mean ,standard deviation, chi-square, and F-test. The major findings are as follows; 1) Hypothesis 1 is rejected, because the behavior of laundering management is not influenced by six family environmental variables. 2) The facilities for laundering management are affected by the home maker's age(p<.05), her educational level(p<.001), family income (p<.001), the housing of the family (p<.01) among six family environmental variables ; there fore, Hypothesis 2 is partially proved; 3) the time for laundering management is affected by the number of family members(p<.01), the age of the youngest child(p<.05), the home maker's educational level(p<.001) among six family environmental variables; therefore, Hypothesis 3 is partially proved.

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Do Long Term Savings Motives Foster Household Participation and Contribution to Savings Mechanisms in Rural Vietnam?

  • HA, Van Dung
    • The Journal of Asian Finance, Economics and Business
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    • 제6권2호
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    • pp.75-82
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    • 2019
  • The paper aims to investigate the impacts of long-term savings motives on fostering household participation and contribution to savings mechanisms in rural Vietnam. The paper is organized in five parts: introduction, data description, methodology, empirical results, and conclusion. The quantitative methodology is employed and three simultaneous estimation methods, including instrumental variable model, two-step model, and Heckman model are used to test these impacts as well as the robustness of results. In each model, the paper examines the impacts of independent factors on both household participation and household contribution to savings mechanisms. Two sets of independent variables: long-term savings motives (profit-making investment, accumulation for big expenditure, providing for old age, and cost of educations) and control variables (dependency rate, number of people in household, and household wealth) are in each model. A set of dataset of 2,314 households for analysis is obtained from household survey in rural Vietnam. Robust statistical findings indicate that profit-making investment emerged to be the strongest motive fostering household participation to savings mechanisms while other long-term savings motives have little or no impact on fostering household participation to savings mechanisms. In addition, education investment encourages household contribution to savings mechanisms in rural Vietnam.

A study on the perception of the metaverse and luxury fashion brands

  • Hosun Lim
    • 복식문화연구
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    • 제32권2호
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    • pp.125-147
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    • 2024
  • This study aims to analyze consumer perceptions of the metaverse platform and luxury fashion brands in relation to consumer lifestyles, thereby providing foundational data for future marketing strategies of fashion brands using the metaverse. A survey on the lifestyle and perceptions of the metaverse, as well as on luxury fashion brands, was conducted among 300 men and women between their 20s and 40s. Statistical analyses included frequency analysis, cross-tabulation, chi-square (χ2) analysis, factor analysis, cluster analysis, one-way ANOVA, and Duncan's post-hoc test. Factor analysis of the participants' lifestyles revealed five distinct types: "Indifferent," "Social, individual, and leisure-oriented," "Trend-leading and brand-oriented," "Appearance and fashion-oriented," and "Self-improvement-focused and individualistic" types. The analysis of luxury fashion brand perceptions based on lifestyle types showed that the "Trend-leading and brand-oriented" type had higher awareness and preference for brands such as Gucci, Burberry, and Balenciaga, while the "Indifferent" type showed lower levels of awareness and preference. Regarding brand perception related to luxury fashion brand content experiences within the metaverse, Gucci, Burberry, and Balenciaga showed consistent results across all types. Specifically individuals classified under the "Trend-leading and brand-oriented" category exhibited higher awareness and preference for these brands within metaverse experiences, while those categorized as "Indifferent" displayed comparatively lower levels. Therefore, digital marketing strategies targeting consumers under the "Trend-leading and brand-oriented" category are expected to be highly effective for luxury fashion brands. This study is poised to contribute to the expansion of the marketing landscape within the metaverse virtual world for fashion.