• Title/Summary/Keyword: T-test analysis

Search Result 10,833, Processing Time 0.052 seconds

Factors Influencing Run Away Impulse in Early Adolescents (초기 청소년의 가출 충동에 영향을 미치는 요인)

  • Ryu, Seung-Hee;Park, Kyung-Sook;Seo, Min-Sook
    • Research in Community and Public Health Nursing
    • /
    • v.23 no.1
    • /
    • pp.1-12
    • /
    • 2012
  • Purpose: This study carried out a preliminary analysis of available literature and used the ecological approach to define a research hypothesis with focus on individual, family, and school variables related to early adolescents' urge to run away. This study also aimed to examine the influence of each of these variables in order to build a forecast model showing which variables have more influential on early adolescents' urge to run away. Methods: Materials were collected from 433 male and female fifth- and sixth-grade students at two schools in Gyeonggi Province. Analysis was carried out using SPSS/WIN 18.0. Frequency analysis, ${\chi}^2$-test, t-test, correlation analysis and logistic regression analysis were conducted. Results: The results indicate that personal factors related to runaway impulse are gender and previous runaway attempts, family-related factor family functionality, and school-related factor the area of stress from study. Conclusion: Based on the study results as above, individual, family, and school interventions need to be developed.

Analysis of young adults sentiments about the image of jan brands and awareness of jean brads under the IMCF economic environment (IMF이후의 신세대 진바지 소비자의 감성이미지 면화와 브랜드 인지도 분석)

  • 이훈자;김칠순;임정호;남영미
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
    • /
    • 1998.11a
    • /
    • pp.273-277
    • /
    • 1998
  • The purpose of this study was to develop a large representative data base for jeans marketing strategy. This study was to survey brand awareness and analyze brand image and consumer's seeking image. The 700 questionnaires were distributed and 656 reliable ones were used for statistical analysis. A SAS statistical package including frequency table, factor analysis, analysis of variance, Duncan's multiple range test, Peason's correlation test was used. The results are as follows: 1. Brand awareness involves "brand recall" based on asking a person to name recalled first, and "brand recognition" based on asking to identify brand name from 30 given brands. The result indicated that "Levi" was dominant for brand recall and Guess was dominant for brand recognition. 2. Regarding the brand image, the result showed that "Vov" was best represented for sophisticated 8t trendy brand images, "Storm" for sophisticated brand image, "Jambangee" for reasonable price & comfortable brand images, and "Levis" for classic & design/color brand images. 3. As a result of factor analysis on consumer's seeking image, six factors(characteristic/gay, intelligent/sexy, feminine/sophisticated, active/functional, cute/young, simple/comfortable) were found. Several factors had a relationship with demographic variables, preferred design, fashion interest.

  • PDF

Analysis of the factors that influence Korean beverage consumption (전통음료 섭취에 영향을 주는 변인에 관한 분석연구)

  • 이현주;손경희;이민준
    • Korean journal of food and cookery science
    • /
    • v.18 no.1
    • /
    • pp.63-72
    • /
    • 2002
  • This study was conducted to (a) investigate the frequency of Korean beverage consumption, (b) analyze the characteristics of socio-demographically classified group according to drinking frequency, (c) investigate the attitude for and awareness of Korean beverage and (d) analyze the factors which influence Korean beverage consumption. The survey was carried out by self-administered questionnaires with 2,200 subjects residing in Seoul. A total of 1,885 samples were used for analysis by using t-test, one way analysis of variance (ANOVA), Duncan's multiple comparison test, factor analysis, and analysis of covariance (ANOCOVA) with SAS computer program. Among various Korean beverage, Donggulre tea was consumed most frequently at an average of 7.4 times per month, and followed by rice beverage, Mi Su, Citron tea, Shick Hae and canned Shick Hae. Among the age groups, the group of 20s showed the lowest frequency of Korean beverage consumption exempt rice beverage. According to occupation group, middle and high school and college student groups showed a high frequency of consumption of cereal based drink such as rice beverage, Mi Su and Yulmu tea. The behavior examination aimed at learning the perceptions relevant to the choice of beverage showed that the subjects believe Korean beverage healthful and nutritious but not familiar through advertisement, not easy to buy, and not to be a habitual drink. The factors influencing the frequency of Korean beverage consumption were shown as health-related factors and habitual/practical factors.

Objectified Body Consciousness and Appearance Management Behaviors of Korean and Chinese Female University Students (한국과 중국 여대생의 객체화 신체의식과 외모관리행동)

  • Lee, Mi-Sook;Jun, Ji Hyun
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.19 no.1
    • /
    • pp.147-162
    • /
    • 2017
  • The purposes of this study were to investigate objectified body consciousness and appearance management behaviors, and to analysis the differences on this two variables between Korean and Chinese consumers. The subjects were 700 Korean and Chinese female university students. The research method was a survey and the measuring instruments consisted of objectified body consciousness scale, appearance management behaviors items, and subjects' demographics attributions. The data were analyzed by frequency analysis, cross tabs analysis, $x^2$ test, Cronbach' ${\alpha}$, factor analysis, t-test, and regression analysis, using SPSS statistical program. The results were as follows. First, three factors(body surveillance, body shame, and control belief) were emerged on objectified body consciousness, and Korean students showed the higher level of objectified body consciousness than Chinese students. Second, Korean students had much more experience and a higher intention to perform various appearance management behaviors than Chinese students. Third, body shame and control belief factors had important effects on appearance management behaviors of both country students. However, body surveillance was an important factor on only Korean students' appearance management behaviors. This study showed that objectified body consciousness is an important variable to affect appearance management behaviors, and there are many differences on objectified body consciousness and appearance management behaviors by cultural environments.

  • PDF

The mediating effects of self-efficacy in the influence of appearance management behavior on life satisfaction among middle-aged women (중년여성의 외모관리행동이 삶의 만족도에 미치는 영향에서 자기 효능감의 매개효과)

  • Seok, Hye-Jung;Cho, Shin-hyun
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.23 no.4
    • /
    • pp.81-93
    • /
    • 2021
  • This study attempted to investigate the mediating effects of self-efficacy in the influence of appearance management behavior and life satisfaction among middle-aged women. For this, a questionnaire survey was performed among 153 women aged 40-59 living in Seoul and Gyeonggi-do. The collected data were analyzed by frequency analysis, cross-tabulation analysis, t-test, ANOVA, Duncan's test, reliability analysis, and correlation analysis, using SPSS 25.0. To examine mediating effects, SPSS Process MACRO #4 was borrowed, and the results found the following: 1) A positive correlation with statistical significance was observed among appearance management behavior, self-efficacy, and life satisfaction. 2) According to the analysis of appearance management behavior, self-efficacy and life satisfaction by demographic characteristics, some differences were found. 3) The mediating effects of self-efficacy in appearance management behavior and the life satisfaction relationship was confirmed. The above results show that middle-aged women experience an increase in self-efficacy through appearance management behavior and improvements in their life satisfaction through such self-efficacy, not just enhancing life satisfaction through appearance management behavior. In other words, appearance management increases life satisfaction through an ego-discovery process.

Effect of the general Characteristics and Oral Public Health Behaviors of the Visually Impaired on the Oral Health Condition (시각장애인의 일반적 특성과 구강보건행태가 주관적인 구강건강상태에 미치는 영향)

  • Lee, Sook-Jeong
    • The Journal of the Korea Contents Association
    • /
    • v.14 no.1
    • /
    • pp.337-345
    • /
    • 2014
  • The visually impaired who have many restrictions on their sight due to impairment of a sense of sight among special senses have substantial difficulties in the areas ranging from very minor behavior in their house to the external activities for social life. Visual impairment may cause many problems in various behaviors for protecting health which have recently drawn a lot of interests. As a method of analysis of collected data, this study conducted the frequency analysis of general characteristics and oral health behavior of the subjects, compared the average of oral public health behavior and oral health condition through t-test and F-test, and conducted the post verification of significant difference among groups with Duncan. For identifying the relevancy between the general characteristics and the oral health behavior, this study conducted Spearman's correlation analysis, and for identifying the impact on subjective, oral health condition, this study conducted multiple regression analysis. SPSS (SPSS20.0 for Windows, SPSS Inc, USA) was used as a statistical program, and the level of significance for determining statistical significance was considered at the level of 0.05. Because the visually impaired are the group whose behaviors for protecting health should be accurately recognized, this study intends to utilize the findings as basic materials for making information communication media suitable for the visually impaired by identifying the real conditions and behaviors of their oral health and analyzing their oral condition caused by such behaviors. With the help of information technology.

Effects of the Marital Conflict in Old Age on Elderly Divorce and Impulse to Commit a Crime (노년기 부부갈등이 황혼이혼과 범죄충동에 미치는 영향)

  • Kang, Sin-Sung;Lim, Wang-Kyu
    • The Journal of the Korea Contents Association
    • /
    • v.13 no.9
    • /
    • pp.178-192
    • /
    • 2013
  • This study is for the analysis of the influence that the factors(communication, domestic life, offensive action, economic problem) of marital conflicts of old age and ecological systems factors(individual, family, sociality) have a impact to the divorce of elderly(thoughts and attempts of divorce) and the impulse to commit a crime(violence, egoism, running away from home). The guinea pigs is 350 married people of ages greater than 55 in the capital area. The 338 collected data excluding incomplete 12 data were analyzed. Statistical methods used in this study were factor analysis, frequency analysis, reliability analysis, t-test, ANOVA, Hiearchical regression analysis and Scheffe test with SPSS 18.0. The result are as follows. First, the marital conflict and ecological systems have a severe impact to the divorce of elderly, the more the conflict of the domestic life and the offensive action, the conflict in communicative and economic problem are getting higher. Second, the marital conflict and ecological systems have a severe impact to the impulse to commit a crime, the more the conflict of a domestic life and the conflict caused by spouse's attack, the economic problem, the egotistic impulse are getting higher. Third, there are some statistically similar differences of all the parts(sex, academic ability, job, children coresidence, religion, physical condition, monthly average income) in the marital conflict by characteristic of sociology of population, ecological systems, the divorce of elderly and the impulse to commit a crime.

The detection of cavitation in hydraulic machines by use of ultrasonic signal analysis

  • Gruber, P.;Farhat, M.;Odermatt, P.;Etterlin, M.;Lerch, T.;Frei, M.
    • International Journal of Fluid Machinery and Systems
    • /
    • v.8 no.4
    • /
    • pp.264-273
    • /
    • 2015
  • This presentation describes an experimental approach for the detection of cavitation in hydraulic machines by use of ultrasonic signal analysis. Instead of using the high frequency pulses (typically 1MHz) only for transit time measurement different other signal characteristics are extracted from the individual signals and its correlation function with reference signals in order to gain knowledge of the water conditions. As the pulse repetition rate is high (typically 100Hz), statistical parameters can be extracted of the signals. The idea is to find patterns in the parameters by a classifier that can distinguish between the different water states. This classification scheme has been applied to different cavitation sections: a sphere in a water flow in circular tube at the HSLU in Lucerne, a NACA profile in a cavitation tunnel and two Francis model test turbines all at LMH in Lausanne. From the signal raw data several statistical parameters in the time and frequency domain as well as from the correlation function with reference signals have been determined. As classifiers two methods were used: neural feed forward networks and decision trees. For both classification methods realizations with lowest complexity as possible are of special interest. It is shown that two to three signal characteristics, two from the signal itself and one from the correlation function are in many cases sufficient for the detection capability. The final goal is to combine these results with operating point, vibration, acoustic emission and dynamic pressure information such that a distinction between dangerous and not dangerous cavitation is possible.

Assessment of Imaging Distortion in Magnetic Resonance Imaging for Stereotactic Radiosurgery: Through Phantom Study (뇌정위 방사선수술 시스템을 위한 자기공명영상의 공간적 왜곡의 측정 : 모형실험을 통한 연구)

  • 박선원;한문희;김동규;정현태;송인찬
    • Investigative Magnetic Resonance Imaging
    • /
    • v.4 no.1
    • /
    • pp.7-13
    • /
    • 2000
  • Purpose : To assess the distortion of MRI with the Leksell stereotactic radiosurgery system in variable pulse sequence and imaging plane through phantom study, to find most adequate imaging plane and pulse sequence for stereotactic radiosurgery system. Materials and methods : We made the phantoms for MRI and get images in variable conditions and analyzed the image distortion using image analysis program, and statistically using paired student t-test. Results : The transeverse plane images had acceptable error ranges bless than 1.5mm) in all pulse sequence in both the analysis of fiducial marker in stereotactic G-frame and the phantom study. The coronal plane images had unacceptable large errors (more than 1.7mm) in the analysis of fiducial marker in the stereotactic G-frame, but had corrected small errors (less than 1.5mm) in the phantom study. Conclusion : We find from the phantom study that the present MR machines are adequate for stereotactic surgery system in frequently used pulse sequences, and imaging planes.

  • PDF

T2 Mapping with and without Fat-Suppression to Predict Treatment Response to Intravenous Glucocorticoid Therapy for Thyroid-Associated Ophthalmopathy

  • Linhan Zhai;Qiuxia Wang;Ping Liu;Ban Luo;Gang Yuan;Jing Zhang
    • Korean Journal of Radiology
    • /
    • v.23 no.6
    • /
    • pp.664-673
    • /
    • 2022
  • Objective: To evaluate the performance of baseline clinical characteristics and pretherapeutic histogram parameters derived from T2 mapping of the extraocular muscles (EOMs) in the prediction of treatment response to intravenous glucocorticoid (IVGC) therapy for active and moderate-to-severe thyroid-associated ophthalmopathy (TAO) and to investigate the effect of fat-suppression (FS) in T2 mapping in this prediction. Materials and Methods: A total of 79 patients clinically diagnosed with active, moderate-to-severe TAO (47 female, 32 male; mean age ± standard deviation, 46.1 ± 10 years), including 43 patients with a total of 86 orbits in the responsive group and 36 patients with a total of 72 orbits in the unresponsive group, were enrolled. Baseline clinical characteristics and pretherapeutic histogram parameters derived from T2 mapping with FS (i.e., FS T2 mapping) or without FS (i.e., conventional T2 mapping) of EOMs were compared between the two groups. Independent predictors of treatment response to IVGC were identified using multivariable analysis. Receiver operating characteristic (ROC) curve analysis was performed to evaluate the predictive performance of the prediction models. Differences between the models were examined using the DeLong test. Results: Compared to the unresponsive group, the responsive group had a shorter disease duration, lower kurtosis (FS-kurtosis), lower standard deviation, larger 75th, 90th, and 95th (FS-95th) T2 relaxation times in FS mapping and lower kurtosis in conventional T2 mapping. Multivariable analysis revealed that disease duration, FS-95th percentile, and FS-kurtosis were independent predictors of treatment response. The combined model, integrating all identified predictors, had an optimized area under the ROC curve of 0.797, 88.4% sensitivity, and 62.5% specificity, which were significantly superior to those of the imaging model (p = 0.013). Conclusion: An integrated combination of disease duration, FS-95th percentile, and FS-kurtosis was a potential predictor of treatment response to IVGC in patients with active and moderate-to-severe TAO. FS T2 mapping was superior to conventional T2 mapping in terms of prediction.