• 제목/요약/키워드: Stepwise Multiple Regression model

검색결과 243건 처리시간 0.029초

치위생(학)과 학생의 환자 의료정보보호 인지 관련요인 (Influencing factors on perception of patient medical information protection in dental hygiene students)

  • 김영인;김숙향;장종화
    • 한국치위생학회지
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    • 제15권4호
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    • pp.743-750
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    • 2015
  • Objectives: The purpose of the study is to examine the correlation and influencing factors among ethics position, self-esteem, and perception of patient medical information protection in the dental hygiene students. Methods: This is a cross sectional study using the structured questionnaire. A self-reported questionnaire was completed by 202 dental hygiene students using the stratified sampling method from September 1 to November 1, 2013. The questionnaire was modified and complemented from Ethics Position Questionnaire (EPQ). The questionnaire included EPQ, self-esteem, and perception of patient medical information protection. Data were analyzed by independent t-test, one way ANOVA, Duncan's multiple comparison analysis, Pearson's correlation analysis, and stepwise multiple regression analysis using IBM SPSS Statistics 21.0 program. Results: There was a positive correlation among all the variable including idealism position, self-esteem, and perception of patient medical information protection, The factors influencing on the perception of patient medical information protection were idealism position (${\beta}=0.271$, p<0.001) and self-esteem (${\beta}=0.248$, p<0.001). The corrected explanation power of the model was 15.1%. Conclusions: As the idealism position and self-esteem become higher, the perception of patient medical information protection gets higher. Therefore, this study suggests that it is needed to develop and vitalize implement the appropriate programs enhancing ethics consciousness, proper position, and self-esteem in the dental hygiene students receiving the education for their professionalism in the dental hygiene curricula.

LPGA 선수들의 시즌성적에 영향을 미치는 경기 기술요인 탐색 (An exploration of tour skill factors influential to game results of LPGA players)

  • 손승범;이창진
    • Journal of the Korean Data and Information Science Society
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    • 제24권2호
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    • pp.369-377
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    • 2013
  • 이 연구는 미국여자프로골프협회 (LPGA)가 제공하는 경기 기술요인을 통해 어떠한 요인이 선수들의 성적에 가장 큰 영향을 미쳤는지 검증하였다. 이를 위해 2004년부터 2012년까지 총 9년 간의 성적자료를 분석에 사용하였으며, 분석대상선수들은 Top 10에 진입한 선수들의 경기 기술요인 사용하였다. LPGA가 제공하는 경기 기술요인 즉, 평균타수, Top10 진입횟수, 평균 퍼팅, 평균 버디, 평균 이글, 드라이버 비거리 및 드라이버 정확도, 그린 적중률, 샌드 세이브율, 그린적중률 당 퍼팅 수를 변인으로 설정하고 이들 변인이 시즌랭킹을 결정짓는 획득상금에 미치는 영향을 분석하였다. 자료처리는 SPSS 20.0을 이용하여 단계적 다중회귀분석을 실시하였으며, 그 결과는 다음과 같다. 최근 9년 간 LPGA Top 10 선수들의 성적에 가장 큰 영향을 미친 경기 기술요인은 평균타수, 평균퍼팅, 드라이버 비거리, Top 10 진입 횟수 순으로 나타났다. 또한 연도별로 살펴본 결과, 2004년 평균타수, 2005년 그린적중률, 2006년 평균 이글, 2007년 Top 10진입횟수, 2008년 평균타수, 2009년 평균퍼팅이 가장 큰 영향을 미친 경기 기술요인으로 나타났으며, 2010년은 평균타수, 그린적중률, 그린적중률당 퍼팅 수 순으로 나타났다. 2011년은 평균버디, 2012년은 그린적중률 당 퍼팅 수가 선수들의 시즌성적에 가장 큰 영향을 미친 것으로 나타났다.

다문화가족 방문교육지도사의 셀프리더십과 직무몰입에 관한 연구 (A Study on Self-Leadership and Job Involvement of Multicultural Family Home-Visit Instructors)

  • 채진영;김헤라;황혜신;권기남;강복정;서주현
    • 아동학회지
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    • 제37권6호
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    • pp.83-94
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    • 2016
  • Objective: The purpose of this study was to investigate differences in self-leadership and job involvement based on the education levels, majors, and teaching experiences of multicultural family home-visit instructors and the influence of self-leadership on job involvement. Methods: 668 home-visit instructors participated in the online survey from 140 multicultural family support centers in Seoul, 6 metropolitan cities, 9 provinces, and other cities and counties. Data were analyzed through frequency, percentages, Pearson's correlations, one-way ANOVA, $Scheff{\acute{e}}$ post-hoc test, and stepwise multi-regression using SPSS 21.0. Results: The main findings are as follows. First, instructors who were high school graduates had significantly higher scores in self-leadership than the other groups. There was only a significant difference in self-reward of self-leadership based on their majors. There were no significant differences in job involvement based on the education level and major. The greater their home-visit teaching experiences, the higher their scores in self-leadership and job involvement. Second, the stepwise multiple regression model showed that self-expectation, self-goal setting, constructive thinking, and rehearsal of self-leadership explained 49% of the total variance in job involvement. Conclusion: Even though the high school graduates had significantly higher scores in self-expectation, rehearsal, and constructive thinking of self-leadership than the other groups, over-generalization should be avoided because the sample size was relatively small. Based on the finding that greater home-visit teaching experiences was associated with higher self-leadership and job involvement, it would be necessary to improve working condition to prevent instructors from changing jobs. These findings stress the importance of providing opportunities for home-visit instructors to develop leadership, thus improving job involvement.

국내 금융기관들의 신용부도스왑 스프레드에 대한 재무적 결정요인 분석 (Financial Determinants of Credit Default Swap Spreads for Financial Institutions Headquartered in the Republic of Korea)

  • 김한준
    • 한국콘텐츠학회논문지
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    • 제12권11호
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    • pp.338-357
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    • 2012
  • 본 연구의 주제는 국내 금융기관들의 신용부도스왑(CDS) 스프레드의 재무적 결정요인에 대한 분석이다. 대부분의 기존 유사주제관련 연구논문들의 대상 (표본)기업들은 선진자본시장에 소속되어 있었으나, 본 연구의 특성으로서, 현재까지는 신흥자본시장에 소속되어 있는 국내 금융업종 소속기업들에 대한 동 스프레드에 관한 연구라는 점에도 의의가 있다. 연구 방법론과 관련하여, 본문 중 분석된 다중회귀분석과 주요인분석방법 외에도, 강건성 제고를 고려한 단계별회귀분석을 이용한 최종'선정'모형이 추가적으로 검정되었으며, 표본기업들은 국제적으로 거래가 되는 국내 금융기관들(은행, 금융지주회사 포함)이다. 예를 들어, KB국민은행, 하나은행, 기업은행, 우리은행, 그리고 신한금융지주 등이다. 동 연구결과, 여러 재무관련 주요 설명변수들 중, 종합적으로 '이자율기간구조'에 대한 대용변수(즉, 5년만기 국고채와 3년만기 국고채간의 스프레드)와 베타와 동 기간구조 간의 '교호효과변수', 즉, 2가지의 설명변수들이 동 신용부도스왑 스프레드 결정에 대한 통계상의 일관적 중요성을 나타냄이 발견되었다. 본 연구결의 추가적인 기대효과로서는, 국내 투자자(기관투자가 포함)들에게는 상대적으로 생소하지만, 국제자본시장에서는 현재까지 활발히 개발, 매매되는 장외파생금융상품에 대한 이해를 제고할 수 있다는 점이라고 판단된다. 추가적으로, 동 상품의 결정요인에 대한 심층 분석을 통하여, 다국간 자유무역협정(FTA) 체결 등을 통하여 향후 국내외에 신규 진출할 것으로 예상되는 해당 금융기관들이, 신용부도스왑에 대한 자신들의 위험수준을 효율적으로 사전분석할 수 있는 효과도 기대된다.

Practical modeling of cigarette ventilation rate

  • Kim, Young-Hoh;Lee, Moon-Yong;Rhee, Kyu-Seo;Lee, Dong-Wook
    • 한국연초학회지
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    • 제21권2호
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    • pp.109-118
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    • 1999
  • A model predicted describing the effect of cigarette making materials on the level of filter ventilation was developed and evaluated. The developed model was expressed in terms of a linear and quadratic relationship which was validated with experimental measurements for different porosity of plug wrap and tipping paper, unencapsulated pressure drop of filter plug and cigarette column and vent position. Forty-six experimental frequencies were determined as a result of using three levels with five factors Box-Behnken design and analyzed by the multiple regression analysis with backward stepwise in STATISTICA/PC under restricted conditions. The four factors, except filter pressure drop variable, were statistically significant at the level of 0.05 but most of all linear by linear interactions were comparatively lower significant. By the analysis of linear and quadratic regression coefficient, filter ventilation of the cigarette was affected by porosity of plugwrap (5.87, -4.25), porosity of tip paper (5.68, -1.00), vent position (-3.87, 3.08), tobacco column pressure drop (2.56, 0.66), and filter pressure drop (1.50, 0.58) in the decreasing order. It should be emphasized that the major conclusion of this study was not that any particular parameter was linear or quadratic on any limit scale, but that there were highly significant relationships among factors involving linear, quadratic and their interaction and perhaps even linearity between and within factors. While, there is also quite strong evidence that vent position from mouth end and cigarette making materials are reverse relationship on this experimental model. On the basis of the result, it can be concluded that the porosity of the plug wrap and tipping paper has a marked effect on degree of filter ventilation rate. The F-value of plug wrap and tipping paper porosity among five factors were 39.2 and 36.8 respectively with P-value of 0.000 indicating higher significant for both factors. According to the analysis of variance, the model fitted for filter ventilation was significant at 5% confidence level and the coefficient of determination ($R^2$=0.84) was the proportion to variability in the data well fitted for by the model.

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마을단위 보건요원의 활동이 사업 성과에 미치는 영향 -강화지역사회 보건시범사업지역에서- (The Influence of Family Health Workers' Activities on Health Program Performance -Evaluative Research in the The Kang Wha Community Health Demonstration Project-)

  • 서경
    • Journal of Preventive Medicine and Public Health
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    • 제11권1호
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    • pp.24-30
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    • 1978
  • This study was designed to analyse effects of Family Health Workers' activities on the performance of a child immunization program as part of the evaluative research in the community health demonstration project in Kang Wha. Frequent shortcomings of evaluative research are problems in setting evaluative indices, difficulties in interpreting influences of socioeconomic changes due to lack of control and failure of demonstrating association between activity input and program performance. Specific objectives of this study was to improve the frequent shortcoming of evaluative research by isolating the effects of Family Health Workers' activities on the performance of the program through controlling other variables which also influenced the program performance. The target population consisted of 1240 children who were born between Jan. 1971 and Dec. 1975 in Sunwon Myun, and Naega Myun in Kwang Wha Gun, Kyonggi Province. The data were collected in part through 20 Family Health Workers who interviewed the mothers of these children in their villages during Nov. 1977. Part of the data were obtained by summarizing Family Health Workers daily activity records. All data were grouped for each birth cohort according to the 20 villages. Dependent variable of the model is the measle immuinization rate of each village and the independent variables are characteristics of baby, mother, household, travel time to the health subcenter, to Kang Wha Town, and the mean member of visits to the household by Family Health Workers as well as their other related activities and the year of birth of children according to village. The model was analysed by stepwise multiple regression technique. The summarized results show that overall $R^2$ were 39.3% and mean number of Family Health Worker household visits, mean age of mother and mean economic status were significant variables in explaining the immunization rate. Therefore Family Health Workers' activities are one of the significant variables in influencing the increased immunization rate of children in villages of the project area.

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일부 여대생의 건강증진 생활양식과 관련요인연구 (A Study on Influencing Factors in Health Promoting Lifestyles of Female College Student)

  • 강말순;김정남
    • 지역사회간호학회지
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    • 제11권1호
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    • pp.184-198
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    • 2000
  • This descriptive correlational study was conducted to identify the variables related to a health promoting lifestyle in college female students. Participants were 232 female college student living in chinju city who selected by convenience sampling method. The data were collected by self-reported questionnaires from May to December. 1999. The data were analyzed by using descriptive statistics. pearson correlation coefficient. t-test. ANOVA. Duncan verification and stepwise multiple regression with an SAS program. The result to this study were as follows; 1) The average score of a health promoting lifestyle performance was 97.19, the average score of each item was 2.37. among the each items. self-actualization was obtained the most high score(31.10) and stress management was obtained the low score(14.74). 2) The result of compare health promoting lifestyle performance with related variables was follows; (1) In intervention factor, school lifestyle level showed significant positive correlations with teaching relationship level. (2) In Analysis of relationship of health definition. self-efficacy, perceived health status. and perceived benefit & barriers of health that is recognition-perception factors. health promoting lifestyle performance showed significant positive correlations with health definition (r = .2948. p = .001) and self-efficacy (r= .4587. p = .001). (3) A health promoting lifestyle showed significant positive correlations with school lifestyle(9.9%), family support (12.8%), and relationship with teacher (14.6%). This result indicate that; 1) need to development the health promoting model that suitable to our situation. 2) need to development the health promoting model that include family member and application and test to women. 3) need to development of the health promotion program and health education to women. 4) need to study for find out variables that have a influence to stress management. exercise. nutrition. and health promoting performance with low score in test.

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Changes of Plasma Cardiovascular Disease Risk Factors according to the Health Practice and Dietary Habits in Healthy Male University Studnets

  • Kyeong Sook Yim
    • 대한지역사회영양학회지
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    • 제3권5호
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    • pp.685-694
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    • 1998
  • This cross-sectional study was conducted to describe the changes of plasma cardiovascular disease(CVD) risk factors in Korea. Overnight fasting plasma levels of total cholesterol, high density lipoprotein(HDL)-cholesterol, triacylglycerol and glucose were analyzed. Blood pressure and anthropometric data were also measured. Health practice factors such as smoking status, alcohol consumption and frequency fo exercise were evaluated by a self-administered questionnaire. Questions regarding dietary habits and food preferences were also asked. Seventy eight percent of the subjects had more than one CVD risk factor. Plasma total cholesterol, triacylglycerol, and fasting blood glucose were significantly increased according to the subjects body mass index$(kg/m^2$, BMI), whereas HDL-cholesterol, low density lipoprotein(LDL)-cholesterol and blood pressure showed no significant differences with BMI. Current smokers had significantly high plasma total cholesterol, LDL-cholesterol and triacylglycerol levels. Alcohol consumption significantly increased plasma total cholesterol and fasting blood sugar, but regular exercise had no effects on the plasma CVD risk factors. Overeating and frequency of fast food consumption were positively correlated with the CVD risk score, whereas intake of grains, meats and vegetables were negatively correlated with that score. A stepwise multiple regression analysis was performed to examine the effects of specific dietary factors on plasma lipid levels. For plasma total cholesterol level, the frequency of fast food intake explained 8% of the variance, followed by habitual overeating, frequency of grain intake and high cholesterol food intake(Model $R^2$=22.4%). For plasma triacylglycerol level, preference of oily foods accounted for 7.5% of the variance, followed by eating breakfast, preference of fruit and frequency of grain intake(Model $R^2$=22.0%). The findings suggest that intervention programs to reduce the risk of CVD should focus on health practice through reducing BMI, smoking cessation and moderate or no alcohol drinking. Moreover, desirable dietary habits such as eating breakfast, not overeating and reduced intake of fast food may improve CVD risk.

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노인의 영양섭취상태에 영향을 미치는 인구사회학적 요인 분석 (Sociodemographic Factors Associated with Nutrients Intake of Elderly in Korea)

  • 임경숙;이태영
    • Journal of Nutrition and Health
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    • 제37권3호
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    • pp.210-222
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    • 2004
  • In recent years, the number and proportion of Korean elderly have grown rapidly, and elderly individuals show a disproportionate risk for poor nutritional status. The purpose of this study was to examine the relationship of sociodemographic background to nutrient intake of persons 65 years of age or older, living in 15 cities in Korea. Data on 1973 subjects (603 males, 1370 females), who participated in the Korean Elderly Nutrition Survey (2000), were analyzed. Their mean age was 72.3 years and their mean body mass index (BMI) was 24.2 kg/$m^2$. Basic sociodemographic data were obtained through personal interviews. The 98-item semi-food frequency questionnaire, developed and previously validated for Korean middle-aged and elderly subjects, was administered. “Percentage of subjects who consumed under 75% Korean RDA,” “number of nutrients consumed below 75% Korean RDA,” “mean nutrient adequacy ratio,” and “nutrient density” were used to determine nutritional status. Male elderly had better nutritional quality than female elderly. Nutritional quality decreased with age, especially in older elderly (over 75). Elderly who were underweight (BMI 〈 20 kg/$m^2$) showed poorer nutritional quality than those who were normal weight (BMI 20∼25 kg/$m^2$) and overweight (BMI $\geq$ 25 kg/$m^2$). Elderly who lived alone had significantly poorer nutritional quality than those who lived with a spouse, and/or with children. Lower education level and economic dependence also showed lower nutritional quality. A stepwise multiple regression analysis was performed to examine the effects of specific sociodemographic factors on nutritional quality. For number of nutrients under 75% RDA as a dependent variable, education level explained 4.8% of the variance, followed by living status, age, body mass index, gender, and living expense support (Model $R^2$ = 0.091). For mean nutrient adequacy ratio as a dependent variable, model $R^2$ was 0.098. Therefore, sociodemographic variables such as gender, age, body mass index, living status, educational level, and economic status influenced elderly nutrition status. These results indicate that an elderly nutrition intervention should focus on subjects who are poorly educated, living alone, age 75 or older, and/or underweight.

The Mediating Effects of Learning Motivation on the Association between Perceived Stress and Positive-Deactivating Academic Emotions in Nursing Students Undergoing Skills Training

  • Wang, Wei;Xu, Huiying;Wang, Bingmei;Zhu, Enzhi
    • 대한간호학회지
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    • 제49권4호
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    • pp.495-504
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    • 2019
  • Purpose: Nursing students experience a high degree of perceived stress during skills training. The resulting academic sentiment is worthy of research. This study examined the learning motivation as a mediator in the association between perceived stress and positive deactivating academic emotions in nursing students undergoing skills training. Methods: A survey was conducted on 386 third-year undergraduate nursing students at a university in Changchun, China, in 2017. The survey included the items on perceived stress, learning motivation during nursing skill training, and general academic emotion. There were 381 valid responses (response rate=98.7%). Based on the results of partial correlation and stepwise multiple regression equations, the study examined the mediation model between perceived stress, learning motivation and positive-deactivating academic emotions using process 2.16 (a plug-in specifically used to test mediation or moderation effect in SPSS). Results: There was a significant negative correlation between students' perceived stress and learning motivation during nursing skills training and positive-deactivating academic emotions. Nervousness, loss of control, and interest in developing reputation had significant predictive effects on positive-deactivating academic emotions. The mediating model was well supported. Conclusion: Learning motivation during nursing skills training lessened the damage of perceived stress on positive-deactivating academic emotions. Improving students' motivation to learn could reduce their perceived stress and build more positive emotions. Positive emotions during learning played an important role in helping nursing students improve skills and enhance their nursing competence.