• 제목/요약/키워드: Stepwise logistic regression

검색결과 98건 처리시간 0.029초

두통을 호소하는 초등학생의 스트레스요인과 대처방식 (Comparisons of Stressor and Coping Style between Headache-Suffering Children and Headache-Free Children)

  • 정복례;홍연란
    • Child Health Nursing Research
    • /
    • 제6권3호
    • /
    • pp.354-361
    • /
    • 2000
  • The purpose of this study was to examine the stressors and coping styles between headache- suffering children and headache-free children. The subjects of this study consisted of 112 headache-suffering children and 203 headache- free children. They were 5th and 6th grade of elementary school around Taegu city. The periods of study was from June 1, to July 20, 2000. Data were analyzed by SAS computer programme The results of this study were as follows: 1. The score of stressor of headache-suffering children was higher than that of headache- free children significantly. The scores of school stressor and mess media stressor of headache-suffering children were higher than those of headache-free children significantly. 2. There was no significant difference even though the mean score of the coping style in headache-suffering children was higher than that of headache-free children. There were also no significant differences in both problem-oriented coping style and emotion- oriented coping style. 3. Logistic regression analysis(stepwise) revealed that the most powerful predictor was the variable stressor in school(standardized estimate=0.316, P<.001), followed by stressor in mass media(standardized estimate=0.224, P<.05).

  • PDF

건강 및 식이요인과 굴절이상 시력장애와의 관련성 (The Relationship between Ophthalmic Refractive Errors and Factors of Nutrition and Health)

  • 김영옥;최혜정;이순영
    • 대한지역사회영양학회지
    • /
    • 제5권4호
    • /
    • pp.608-614
    • /
    • 2000
  • The purpose of this study was to evaluate the relative importance among various biological and environmental factors on refractive errors. Various factors such as diseases, health related behavior such as drinking, smoking and exercise, as well as dietary factors were considered as a possible determinant. Surveys of 492 residents over 20 years of age in Kuri city were conducted during 1998. The survey included a refractive error test adopting a autokerato-refractometer, dietary survey using a 24 hour recall method, disease survey including blood and other diagnosis tests, and a health behavior survey using questionnaires with variables of smoking, drinking, and exercise. A stepwise logistic regression analysis was adopted to analyse the relative importance among independent variables of health behaviors, disease, and dietary factors on ametropias. As a result, in the case of myopia, liver dysfunction appeared to be the most important factors followed by the health related behavior of smoking and exercise as the second most important factors. Nutrient factors such as carotene and protein appeared to be the third most important factors. Similar results had been shown in the case of the hyperopia. In summary, liver dysfunction and the health related behaviors of drinking and smoking appeared to be more influential factors on abnormal eye sight of myopia and hyperopia than dietary factors.

  • PDF

Forecasting obesity prevalence in Korean adults for the years 2020 and 2030 by the analysis of contributing factors

  • Baik, Inkyung
    • Nutrition Research and Practice
    • /
    • 제12권3호
    • /
    • pp.251-257
    • /
    • 2018
  • BACKGROUND/OBJECTIVES: There are few studies that forecast the future prevalence of obesity based on the predicted prevalence model including contributing factors. The present study aimed to identify factors associated with obesity and construct forecasting models including significant contributing factors to estimate the 2020 and 2030 prevalence of obesity and abdominal obesity. SUBJECTS/METHODS: Panel data from the Korea National Health and Nutrition Examination Survey and national statistics from the Korean Statistical Information Service were used for the analysis. The study subjects were 17,685 male and 24,899 female adults aged 19 years or older. The outcome variables were the prevalence of obesity (body mass index ${\geq}25kg/m^2$) and abdominal obesity (waist circumference ${\geq}90cm$ for men and ${\geq}85cm$ for women). Stepwise logistic regression analysis was used to select significant variables from potential exposures. RESULTS: The survey year, age, marital status, job status, income status, smoking, alcohol consumption, sleep duration, psychological factors, dietary intake, and fertility rate were found to contribute to the prevalence of obesity and abdominal obesity. Based on the forecasting models including these variables, the 2020 and 2030 estimates for obesity prevalence were 47% and 62% for men and 32% and 37% for women, respectively. CONCLUSIONS: The present study suggested an increased prevalence of obesity and abdominal obesity in 2020 and 2030. Lifestyle factors were found to be significantly associated with the increasing trend in obesity prevalence and, therefore, they may require modification to prevent the rising trend.

공공 및 민간 부문 종사 근로자의 우울증상에 영향을 미치는 요인 (Factors Influencing Depressive Symptoms in Public and Private Sector Employees)

  • 이해준;김은영
    • 한국직업건강간호학회지
    • /
    • 제28권4호
    • /
    • pp.242-252
    • /
    • 2019
  • Purpose: This study aimed to identify factors influencing depressive symptoms in public and private sector employees. Methods: Survey data on 23,602 workers who had worked in the public or private sector were obtained from the 2014 Korean Working Condition Survey (KWCS). Symptoms of depression were measured using the WHO-5 Well-being Index. Data were analyzed using a $x^2$ test, t-test, and multivariate stepwise logistic regression to determine the factors affecting the symptoms of depression. Results: First, the prevalence of depressive symptoms was 41.1 % in public sector employees and 43.4 % in private sector employees. Second, the factors commonly affecting depressive symptoms in public and private sector employees were residence area, cognitive demands, development opportunities, social support from colleagues, social support from supervisors, social community at work, job rewards, and work-family conflict. In addition, age, company size, atypical work, ergonomic risks, quantitative demands, emotional demands, influence, and job insecurity were found to be predictors of depressive symptoms unique to private sector employees. Conclusion: Mental health programs including the employee assistance program (EAP) should be developed and implemented after considering the risk factors affecting depressive symptoms.

임플란트의 생존과 변연골 소실에 영향을 미치는 인자들 (Factors associated with the survival and marginal bone loss of dental implants: a 5-year retrospective study)

  • 송을락;이재관;엄흥식;박세환;장범석
    • 구강회복응용과학지
    • /
    • 제32권4호
    • /
    • pp.280-292
    • /
    • 2016
  • 목적: 이 연구의 목적은 임플란트의 생존율과 주위 변연골 수준을 후향적으로 평가하여, 술자의 임상적 경험을 포함한 요인들이 미치는 영향을 분석하고자 하였다. 연구 재료 및 방법: 2002년 1월부터 2009년 3월까지 강릉원주대학교치과병원 치주과에서 전공의가 2단계법으로 식립한 임플란트 중 5년 이상의 기록이 있는 146명의 420개 임플란트를 대상으로, 임플란트 탈락여부, 주위 골 소실량, 성별, 연령, 2형 당뇨, 흡연, 지대주 연결 형식, 표면 처리 방법, 직경, 식립 부위, 식립 당시 전공의 연차, 덮개 나사의 조기 노출, 보철학적 합병증, 동반된 골 이식 술식 등의 영향을 평가하였다. 결과: 최종 보철물 장착 후 5년간 누적생존율은 94.9% 이었다. 이원로지스틱회귀분석 결과, 흡연과 덮개 나사의 조기 노출이 실패율을 유의하게 증가시켰다. 다중회귀분석 결과, 흡연, 임플란트 지대주 연결 형식, 및 표면 처리 방법이 임플란트 주위 변연골 수준 변화에 유의한 영향을 주었다. 술자의 임상경험을 반영하기 위한 식립 당시의 전공의 수련 연차는 임플란트의 실패와 유의한 연관성은 보이지 않았다(P = 0.171). 결론: 흡연, 덮개 나사의 조기 노출, 지대주 연결 형식 및 표면 처리 방법이 임플란트의 성공과 유의한 상관관계를 보이는 것으로 생각된다.

통계적 예측모형을 활용한 경륜 경기 순위 분석 (Analysis of cycle racing ranking using statistical prediction models)

  • 박가희;박리라;송종우
    • 응용통계연구
    • /
    • 제30권1호
    • /
    • pp.25-39
    • /
    • 2017
  • 최근 경륜은 2015년도 기준, 5백만 명 이상의 많은 사람들이 참여하고 2조를 넘어선 매출을 발생시키는 대중적인 레저스포츠로서 자리 잡고 있다. 본 연구의 목적은 다양한 통계적 분석기법을 사용하여 경륜경기의 순위를 예측하고, 순위에 유의한 영향을 미치는 변수들을 파악하는 데에 있다. 다양한 Classification 방법과 Regression 방법들을 적용하여 순위예측모형을 만들고 비교분석하였다. 대부분의 모형에서 공통적으로 선택된 변수들을 살펴보면, 등급이 강급될수록, 종합득점이 높을수록 순위가 높아지며 반대로 등급이 승급될수록, 번호 4번을 부여받을수록 그리고 최근성적의 순위가 낮을수록 순위가 낮아지는 것을 알 수 있었다. 또한, 선수의 실력과 관련된 연속형 변수들을 각 경기별로 평균값을 빼서 보정한 자료와 원자료를 사용하여 모형을 적합시킨 결과 모든 모형에서 보정된 자료를 사용하였을 때 더 낮은 오분류율을 보였다. 마지막으로 분석에 사용하지 않은 최근 한 달 경기결과를 예측해서 베팅했을 때 모든 경우에 예측률은 높았지만 큰 이익을 거두지 못했는데 그 이유는 낮은 배당률을 가진 경기의 결과만을 잘 예측했기 때문이다.

계획된 행위이론에 근거한 대학생의 헌혈의도 및 헌혈행위 예측요인 (Predictive Factors on Blood donation Intention and Behavior in College Students: Base on the Theory of Planned Behavior)

  • 김유정;최인희
    • 한국산학기술학회논문지
    • /
    • 제15권6호
    • /
    • pp.3789-3798
    • /
    • 2014
  • 본 연구는 Ajzen의 계획된 행위이론(TPB)에 근거하여 대학생의 헌혈의도와 헌혈행위에 영향을 미치는 요인을 파악하는 데 목적이 있다. 연구대상은 G시에 위치한 일개 대학 대학생 258명으로 하였으며, 자료 수집은 2013년 6월 3일부터 14일까지의 기간에 구조화된 자기기입식 설문조사로 하였다. 자료 분석은 SPSS/WIN 19.0을 이용하였고, 대학생의 헌혈의도에 영향을 미치는 요인은 단계별 중회귀 분석을, 헌혈행위에 영향을 미치는 요인은 로지스틱 회귀분석을 시행하였다. 대학생의 헌혈의도에 영향을 미치는 요인을 확인한 결과 헌혈에 대한 지각된 행위통제, 헌혈에 대한 태도, 헌혈에 대한 주관적 규범순이었으며, 65.6%의 영향력이 있었다. 또한, 헌혈행위에 영향을 미치는 요인을 확인한 결과 헌혈의도(OR=1.129, p=.010)만이 유의하였으며, 헌혈에 대한 지각된 행위통제는 헌혈행위에 유의한 영향을 미치지 않은 것으로 나타났다. 따라서 추후 대학생의 헌혈의도를 증가시키기 위한 프로그램에서 지각된 행위통제, 태도 및 주관적 규범을 강화하는 것은 헌혈의도를 높이고 이로써 헌혈행위를 증가시킬 수 있을 것으로 본다.

Eating patterns of children's favorite foods and its related factors among elementary, middle, and high school students in Korea

  • Lee, YuJin;Lee, Seungmin;Lee, KyoungAe;Lee, Kyung-Hea;Baik, Inkyung
    • Nutrition Research and Practice
    • /
    • 제11권6호
    • /
    • pp.517-524
    • /
    • 2017
  • BACKGROUND/OBJECTIVES: There are limited studies investigating the eating patterns of children's favorite foods. The present study aimed to evaluate a wide range of children's favorite foods, derive its eating patterns, and identify factors related to the patterns. SUBJECTS/METHODS: A nationwide cross-sectional study included 5,458 students in elementary, middle, and high schools. The survey was conducted at each school to evaluate children's favorite food intake, including the intake frequency of 31 food items or food groups, and its related factors, such as demographic, economic, and environmental characteristics and awareness of policies on children's favorite foods. Factor analysis using varimax rotation method and logistic regression analysis were conducted. RESULTS: Two factors were derived as major eating patterns from data of children's favorite foods: the 'unhealthy eating pattern' which mainly involves confectionery, chocolate, ramen, fried food, etc.; and the 'healthy eating pattern' which mainly involves soybean milk, vegetables, fruit juice, and nuts. A stepwise selection procedure through the regression analysis revealed that allowance, use of screen media, less awareness of policies on children's favorite foods, and less interest in health were positively related to the tendency of unhealthy or less-healthy eating patterns (P < 0.05). CONCLUSIONS: This study examined that the eating patterns of children's favorite foods were associated with certain environmental characteristics and awareness about the related policies. These findings suggest that a nutrition education program regarding children's favorite foods needs to be conducted according to the characteristics of students to develop their healthy eating habits and proper choice of favorite foods.

뇌경색 환자의 어혈변증과 동맥경직도의 관련성 연구 (Relationship between Blood Stasis and Arterial Stiffness in the Patient with Ischemic Stroke)

  • 신원준;박영민;정동원;홍진우;선종주;이준우;정우상;박성욱;문상관;박정미;고창남;조기호;김영석
    • 대한한의학회지
    • /
    • 제27권3호
    • /
    • pp.241-250
    • /
    • 2006
  • Backgrounds: Blood stasis is hon as an important pathologic factor for vascular disorder in Oriental medicine. Despite its clinical importance there have been few objective tests for diagnosing blood stasis. Objectives: This study was designed to examine the relationship between blood stasis and arterial stiffness measured by cardio-ankle vascular index (CAVI). Methods: The subjects were 104 ischemic stroke patients with onset after 14 days. Their general characteristics, lipid profiles and uric acid were recorded. The degree of arterial stiffness was assessed by CAVI, and blood stasis was evaluated by diagnostic criteria. The data were analyze4 by chi-square test, student t-test, spearman correlation analysis, and pearson correlation analysis. Then, stepwise multiple logistic regression analysis was applied in order to exclude the interactions among several factors. Results: There were significant differences in right, left and higher CAVI between the blood stasis group and the non blood stasis group (p-value<0.01). Age, systolic blood pressure, triglyceride and CAVI had relationships with blood static scores. In multiple logistic regression analysis, the adjusted odds ratio of blood stasis for arterial stiffness with CAVI above 9 were 7.091 (95% confidence interval, $1.641\sim30.638$). Conclusions: The results demonstrated the relationship between blood stasis and arterial stiffness measured by CAVI. Therefore, we suggest that CAVI should be one of the objective tests for diagnosing blood stasis.

  • PDF

유급 간병서비스 이용 영향요인에 관한 융복합적 연구: Andersen's Behavioral Model (A Convergence Study on Influencing Factors of Paid Care Service: Andersen's Behavioral Model)

  • 김한결;김성국;심현진;이희명;이현실
    • 디지털융복합연구
    • /
    • 제15권4호
    • /
    • pp.327-337
    • /
    • 2017
  • 현재 입원환자 및 환자 가족의 사적 고용으로 시행되는 유급 간병서비스 실태를 파악하고, 이를 이용하는데 영향을 미치는 요인을 확인하고자 함을 목적으로 한다. 본 연구는 한국의료패널 자료 (2011-2014)를 활용하였으며, 연간 1회 이상 입원서비스를 이용한 경험이 있는 5,110명을 연구대상으로 선정하였다. 본 연구의 자료처리 및 분석을 위해 STATA 12.0 SE를 활용하였으며, 입원환자들의 기본특징을 확인하기 위해 빈도분석을 수행하였으며, 특성에 따른 유급 간병서비스 이용 현황을 확인하기 위해 교차분석 및 t-test를 시행하였다. 마지막으로, 입원환자들의 유급 간병서비스 이용에 영향을 미치는 요인을 확인하기 위해 Andersen's Behavioral Model의 3 범주를 단계적으로 모형에 투입하는 위계적 로지스틱 회귀분석을 실시했다. 분석결과 유급 간병서비스 이용은 여성, 고연령, 장기입원 및 장애가 있을 경우에 더 많은 것으로 나타났다. 반면, 사적고용에서 중요한 가구소득 변수는 유의한 결과를 보이지 않았다. 이 연구결과는 현재 논의 중에 있는 간호간병통합서비스의 대상자 선정에 있어 기초자료로 활용될 것으로 기대된다. 또한, 향후 대상자 선정에 관한 세부적인 논의가 이루어질 필요가 있다.