• Title/Summary/Keyword: T-test analysis

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Breast Cancer Clustering in Kanagawa, Japan: A Geographic Analysis

  • Katayama, Kayoko;Yokoyama, Kazuhito;Yako-Suketomo, Hiroko;Okamoto, Naoyuki;Tango, Toshiro;Inaba, Yutaka
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.1
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    • pp.455-460
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    • 2014
  • Background: The purpose of the present study was to determine geographic clustering of breast cancer incidence in Kanagawa Prefecture, using cancer registry data. The study also aimed at examining the association between socio-economic factors and any identified cluster. Materials and Methods: Incidence data were collected for women who were first diagnosed with breast cancer during the period from January to December 2006 in Kanagawa. The data consisted of 2,326 incidence cases extracted from the total of 34,323 Kanagawa Cancer Registration data issued in 2011. To adjust for differences in age distribution, the standardized mortality ratio (SMR) and the standardized incidence ratio (SIR) of breast cancer were calculated for each of 56 municipalities (e.g., city, special ward, town, and village) in Kanagawa by an indirect method using Kanagawa female population data. Spatial scan statistics were used to detect any area of elevated risk as a cluster for breast cancer deaths and/or incidences. The Student t-test was performed to examine differences in socio-economic variables, viz, persons per household, total fertility rate, age at first marriage for women, and marriage rate, between cluster and other regions. Results: There was a statistically significant cluster of breast cancer incidence (p=0.001) composed of 11 municipalities in southeastern area of Kanagawa Prefecture, whose SIR was 35 percent higher than that of the remainder of Kanagawa Prefecture. In this cluster, average value of age at first-marriage for women was significantly higher than in the rest of Kanagawa (p=0.017). No statistically significant clusters of breast cancer deaths were detected (p=0.53). Conclusions: There was a statistically significant cluster of high breast cancer incidence in southeastern area of Kanagawa Prefecture. It was suggested that the cluster region was related to the tendency to marry later. This study methodology will be helpful in the analysis of geographical disparities in cancer deaths and incidence.

A Study in Every Possible Correlation between Daily Food Intake and Growth Rate of Primary School Students (국민학교(國民學校) 아동(兒童)의 영양섭취실태(營養攝取實態)와 성장발육(成長發育)에 관(關)한 연구(硏究))

  • Ryu, Young-Sang;Kim, Sook-He
    • Journal of Nutrition and Health
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    • v.6 no.2
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    • pp.25-33
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    • 1973
  • With the object of the study id every possible correlation between daily food intake and growth rate of primary school students, aged eleven years old, the author distributed prepared questionnaires through 200 children of 5th grade in both sexes in K private primary school, Seoul. Specific object of this study were included following three points: such as daily food intake records for six days. daily food intake records for six days. school records of sample children at the end of 4th grade. physical growth index calculated by means of weight and height of sample children at the first part of the 5th grade. CR. t. F. test as well as percentage calculations were included for statistical analysis. The result of this study were as follows: 1. For the living circumstances a) Average numbers of brother and sister in sampled family were two to three. b) Approximately 50%of the children were brought up by mother's milk at their infants and about 35% of children were weaned at the age of 7 to 12 months. c) Thirty to forty percent of the respondents revealed irregulity in their meal time due to early school time in the morning. d) Monthly average expenditure for daily food reached 20 to 29% out of total income. e) The most favorit foods reflect as follows: The most favorit main dish is boiled rice mixed with other careals and side dish beaf. Fruits and juice are more popular snack among whole children. 2. Nutrition survey a) The calcium and thiamine were the most limited factors out of daily nutrients consumption. b) The total calory intake were composed of carbohydrate 63%, protein 16% and fat 21% respectively. c) The total food intake were composed of 20 to 24% of animal source of foods and 76 to 80% of plant source of foods (vegetables, grains, fruits) d) The total protein intake were composed of 46% of animal protein and 54% of others. e) The grain stuffs consumed in the largest quantity at the level of 50% out whole food groups. f) Twenty four percent of total food intake came from snack between meal time. 3. The result of statistical analysis were as follows: a) The correlation between the calory intake and plysical growth index revealed statistical significancy at the level of p<0.001. b) The correlation between the protein intake and physical growth index revealed statistical significancy at the level of p<0.001. c) The correlation between the meal time and physical growth index revealed statistical significancy at the level of 0.02

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Analysis of impact structure on Business satisfaction and Continuous business intention by the conflict Response and processing of Apartment Reconstruction projects (공동주택 재건축 사업의 갈등대응 및 처리가 사업만족도 및 지속적 사업의사에 미치는 영향구조 분석)

  • Kim, Hyung-Jin;Lee, Joo-Hyung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.3
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    • pp.1699-1706
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    • 2015
  • The purpose of this study is to induce a indicator related to the response, handling and management which are appeared on each step of business enforcement in housing reconstruction projects. Then, it aims to appropriately and reasonably resolve the conflicts of reconstruction business with relevant subjects. These projects physician satisfaction and continual business was going to have the impact that any analysis of the structure in an evaluation. In addition, this study analyzes the impact structure on the business satisfaction and a intention for continuous business through this evaluation. This study sets a operational hypothesis in order to verify the relationship between the variables. then, it creates the structural model by using the Smart PLS 3.0. After analyzing the impact structure by using total 252 samples, this study adopts the final hypothesis which shows (+) path coefficient as set in the hypothesis and test statistic above 1.65. In result, six out of the nine hyphothesis are adopted. then, The 'Response to conflict' which affects the 'Management to conflict(H1)' has a path coefficient of 0.618. In addition, the 'Handling to conflict' which affects the 'Management to conflict(H2)' has a path coefficient of 0.150. The 'Handling to conflict' which affects the satisfaction of 'business' has a path coefficient of 0.101. and the 'management to conflict' which affects the satisfaction of 'business(H7)' has a path coefficient of 0.644. In addition, the 'Intention for continuous business(H8)' shows a path coefficient of 0.258. Finally, The satisfaction of 'business' which affects the 'intention for continuous business(H9)' has a path coefficient of 0.391.

Customers' perception of the attributes of different formats of menu labeling: a comparison between Korea and the U.S.

  • Bosselman, Robert;Choi, Hyung-Min;Lee, Keum Sil;Kim, Eojina;Cha, Jaebin;Jeong, Jin-Yi;Jo, Mina;Ham, Sunny
    • Nutrition Research and Practice
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    • v.14 no.3
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    • pp.286-297
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    • 2020
  • BACKGROUND/OBJECTIVES: This study compared the perception of customers from Korea and the U.S. on the attributes of different formats of menu labeling The specific objectives were 1) to compare the customers' perceived usefulness, ease-of-understanding, clarity, and attractiveness of different formats of menu labeling between Korea and the U.S.; and 2) to compare the customers' use intention to different formats of menu labeling between Korea and the U.S. SUBJECTS/METHODS: A survey was conducted in Korea and the U.S. The participants were allocated randomly to view 1 of the 7 restaurant menus that varied according to the following types of menu labeling formats: (type 1) kcal format, (type 2) traffic-light format, (type 3) percent daily intake (%DI) format, (type 4) kcal + traffic-light format, (type 5) kcal + %DI format, (type 6) traffic-light + %DI format, and (type 7) kcal + traffic-light + %DI format. A total of 279 Koreans and 347 Americans were entered in the analysis. An independent t-test and 1-way analysis of variance were performed. RESULTS: Koreans rated type 4 format (kcal + traffic light) the highest for usefulness and attractiveness. In contrast, Americans rated type 7 (kcal + traffic light + %DI) the highest for usefulness, ease-of-understanding, attractiveness, and clarity. Significant differences were found in the customers' perceived attributes to menu labeling between Korea and the U.S. Americans perceived higher for all the 4 attributes of menu labeling than Koreans. CONCLUSIONS: The study is unique in identifying the differences in the attributes of different formats of menu labeling between Korea and the U.S. Americans rated the most complicated type of menu labeling as the highest perception for the attributes, and showed a higher use intention of menu labeling than Koreans. This study contributes to academia and industry for practicing menu labeling in different countries using different formats.

Analysis of Impact Structure on Business satisfaction and Continuous Business Intention by the Conflict Solution According to the Process of Reconstruction Projects (재건축사업의 추진 단계별 갈등해결이 사업만족도 및 사업지속의사에 미치는 영향구조 분석)

  • Kim, Hyung-Jin;Lee, Joo-Hyung
    • The Journal of the Korea Contents Association
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    • v.15 no.4
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    • pp.500-509
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    • 2015
  • The purpose of this study is to induce a indicator related to the response, handling and management which are appeared on each step of business enforcement in Reconstruction projects. Then, it aims to appropriately and reasonably resolve the conflicts of reconstruction business with relevant subjects. These projects physician satisfaction and continual business was going to have the impact that any analysis of the structure in an evaluation. In addition, this study analyzes the impact structure on the business satisfaction and a intention for continuous business through this evaluation. This study sets a operational hypothesis in order to verify the relationship between the variables. then, it creates the structural model by using the Smart PLS 3.0. After analyzing the impact structure, this study adopts the final Five hypothesis which shows (+) path coefficient as set in the hypothesis and test statistic above 1.65. then, The 'Approval for union establishment(H1)' has a path coefficient of 0.127. In addition, the 'Approval for business enforcement(H2)' has a path coefficient of 0.343. The 'Management and disposition plan(H4)' has a path coefficient of 0.145. and the 'External Factors(H6)' has a path coefficient of 0.124. Finally, The 'satisfaction of business' which affects the 'intention for continuous business(H7)' has a path coefficient of 0.727.

Environmental Consumer Behavior of Junior High School Students - Case Study of Anyang City - (중학생의 환경친화적 소비 행동 - 안양시 지역을 중심으로 -)

  • Ahn, Mi-Young;Park, Tae-Yoon;Nam, Young-Sook
    • Hwankyungkyoyuk
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    • v.18 no.2 s.27
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    • pp.76-89
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    • 2005
  • The objectives of this study are to identify the environmental consumer behavior, to examine the degree of environmental consumer behavior of the junior high school students, and to investigate the educational system of a school which influence the consumer behavior. The data used in this study are 368 male and female students in 9th grade in Anyang City, Kyunggi-do province. Statistics used for data analysis are means, standard deviation, t-test, and Multiple Regression Analysis. The results of the research are summarized as follows : First of all, as a tendency of the environmental consumer behavior of junior high students, the primary factor to the environmental problems was media, and among those, TV and radio was the medium to environmental problems. This implies the fact that the time juveniles interact with mass media is significantly growing, which means that transmitting environmental problems by programs targeted to adolescences through mass media would be effective. Next, the disposal process showed the highest environmental consumer behavior, followed by the consuming and purchasing process. Education on the purchasing process will be necessary to encourage environmental consumer behavior. The route of obtaining environmental knowledge was basically from school and the level of the average environmental knowledge fumed out to be low. This shows the need to produce and distribute media education materials because educating the conclusion of actual experiments will be more effective than that of theoretical studies. The conformity showed general indifference on environmental consumer behavior and the environmental resources were normally collected seperated. Conformity is a cultural bond teenagers think important, therefore education available for students about the same age should be developed. Next, the value intention of the surveyed showed that the ecological intention was highest, followed by economic and convenience intentions. This means the morale of the junior high students to environmental consumer behavior is set sound. Females tended to act more environmentally, while males showed more intention to economic causes. Also, the students of the boys-only or girls-only schools showed higher environmentally sound behavior in disposal processes. Finally, the environmental consumer behavior was influenced most by environmental consumer behavior of the conformity group, followed by ecological morale, frequency of encountering environmental problems, gender, environmental knowledge, whether the school was boys-only or girls-only or not, economical morale, respectively. The largest factor affecting the consumer activity of the purchase, consumption, and disposal process was environmental consumer behavior of the conformity group, along with the ecological morale, and the frequency of encountering environmental problems. This implies that conformity group is a large factor to the juveniles and a plan to entice the environmental consumer behavior of conformity groups are necessary.

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Community Structure and Species Composition of Pinus densiflora for. erecta Forest in Mt. Cheonchuk (천축산 일대 금강소나무림의 군집구조 및 종조성)

  • Byeon, Jun Gi;Park, Byeong Joo;Joo, Sung Hyun;Cheon, KwangIl
    • Korean Journal of Plant Resources
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    • v.33 no.1
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    • pp.1-14
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    • 2020
  • This study was conducted to analyze community structure and species composition of Pinus densiflora for. erecta Stand in Mt. Cheonchuk (653 m). Field survey was carried out from June to September in 2013. 74 plots (20×20 m) were set up, 5 herb layer plots (3×3 m) were constructed for each plot, and there, Diameter at Breast Heigh t(DBH), height, environmental factor, annual growth were measured. Vascular plants were surveyed as following; 66 family, 165 genus, 211 species, 2 sub species, 29 variety, 6 form 248 taxa. Results of cluster analysis for P. densiflora for. erecta forest, 3 communities were divided into; Quercus mongolica (P-1), Quercus variabilis (P-2) and Quercus aliena-Stephanandra incisa (P-3). There were significant environmental factors that organic layer, annual growth, CEC, total total nitrogen, organic matter and pH for each community. As a result of DCA, P-1 and P-2 were distributed large range of environmental factors but relatively limited in P-3. Distributions of herb layer were affected by sand, cation exchange capacity, silt and total nitrogen. Results of MRPP test for herb layer communities, it was significantly analyzed (A=0.003, P<0.008). Species diversity index was highly recorded in P-3 and influenced by cation exchange capacity, total nitrogen, annual growth in consequence of NMS analysis.

The clinical effects of Low Back Pain and Sciatica with Traction treatment (견인요법(牽引療法)을 병용한 요통(腰痛) 및 요각통(腰脚痛) 환자 40례(例)의 임상적 고찰)

  • Lee, Dong-hyun;Park, Eun-ju;Shin, Jung-chul;Na, Gun-ho;Wei, Tung-shuen;Lee, Sam-ro;Lyu, Chung-yeol;Cho, Myung-rae;Chae, Wu-suk;Yoon, Yeo-choong
    • Journal of Acupuncture Research
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    • v.21 no.5
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    • pp.163-177
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    • 2004
  • Objectives : The purpose of this report is to use more Traction treatment clinically by comparing th Improvement of Low Back Pain and Sciatica between Common treatment Group and Common treatment with Traction treatment. Methods : This study was carried out on 40 patients with Low Back Pain and Sciatica who were hospitalized in Dongshin Univ. Oriental Hospital from January, 2003 to May, 2004. Group A of 20 patients were taken both common treatment and Traction treatment. And Group B of 20 patients were only taken common treatment. And at discharge day, we checked and compared VAS(Visual Analogue Scale) and ODI(Oswestry disability index) out of these two groups. SPSS(Statistical Program for Social Science) for Window was used for a statistical analysis and the independent T-test was performed to gauge the improvement of VAS(Visual Analogue Scale) and ODI(Oswestry disability index) out of these two groups, in which case, value of P below 0.05 is considered as useful. Results : The result of the VAS(Visual Analogue Scale) and ODI(Oswestry disability index) of comparison analysis between two groups at discharge day, shows that the improvement of Low Back Pain and Sciatica in cmmon treatment with Traction treatment Group is more effective than that in Common treatment.

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The Difference in the Latitude of Price Acceptance between On- and Off-line transaction in Stock Industry (증권업의 온라인과 오프라인간 가격수용범위 (latitude of price acceptance) 차이에 관한 연구)

  • Hong, Jae-Weon;Kwak, Young-Sik
    • Journal of Global Scholars of Marketing Science
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    • v.13
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    • pp.71-88
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    • 2004
  • Although the factors that affect the width of latitude of price acceptance is well documented, the attempt to develop a practice-oriented methodology to calibrate the region of price insensitivity (i.e., a latitude of price acceptance) for a given individual brand has been relatively rare. The researcher aims to try to full this gap by developing a conjoint analysis-based procedure that can be applied to many industries. Furthermore, we examine the difference in the latitude of price acceptance between on- and off-line transaction in stock industry in Korea. The conjoint analysis-based procedure was applied to measure the disaggregate price response curve for individual stock investment both on- and off line transaction channel. The curves from the samples enable us to estimate the individual choice probabilities corresponding to applied price points. Using t-test the differences in mean choice probabilities between the list price and another price point were tested, through which we can get the latitude of price acceptance for a given brand in stock market. These procedures were tested in on- and off-line stock market in South Korea. The results showed that investors on off-line channel have wider latitudes of price acceptance than the investors on on-line transaction system.

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A Study of Factors Influencing Health Promoting Behavior and Quality of Life in the Elderly (노인의 건강증진 행위 및 삶의 질에 영향을 미치는 요인)

  • 박은숙;김순자;김소인;전영자;이평숙;김행자;한금선
    • Journal of Korean Academy of Nursing
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    • v.28 no.3
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    • pp.638-649
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    • 1998
  • The purpose of this study was to investigate the factors influencing health promoting behavior and quality of life in the elderly, to provide the basic data for health promoting intervention in order to improve quality of life. The subjects of this study were 571 elderly person over the age of 65, living in Seoul, Korea, during the period from November, 1997 to January, 1998. The instruments for this study were the health promoting behavior scale developed by Walker et (1987), the quality of life scale by 노유자(1988), the health concept scale by Laffrey(1986), the perceived health states scale by Lawston et al. (1982), the health value scale by Wallston et al. (1978), the self esteem scale by Rogenberg(1965) and the self efficacy scale by Sherer(1982). The instruments for this study were pretested on the elderly for reliability and validity. The data were analyzed using descriptive statistics, t-test, Pearson correlation coefficients ANOVA and stepwise multiple regression. The results of this study are as follows ; 1. The health promoting behavior showed significant positive correlation with health concept, perception of health status, self esteem, internal health locus of control, self efficacy and quality of life in the elderly. 2. The quality of life showed significant positive correlation with health concept, perception of health status, self esteem, internal health locus of control, self efficacy in the elderly, 3. Stepwise multiple regression analysis revealed that the most powerful predictor of health promoting behavior was quality of life. A combination of quality of life, health concept, perceived health status, self esteem, internal health locus of control, and self efficacy accounted for 46% of the variance in health promoting behavior in the elderly. 4. Stepwise multiple regression analysis revealed that the most powerful predictor of quality of life in the elderly was self esteem. A combination of self esteem. A combination of self esteem, health concept, perceived health status. health promoting behavior and self efficacy accounted for 56% of the variance in quality of life in the elderly. From the results of the study, the following recommendations are presented as follow : 1. Development of a health promoting program to improve quality of life in the elderly. 2. In developing the health promoting program, the above major influencing factors be considered. 3. It is suggested that an education specialist in practice in the community be included in the program development.

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