• 제목/요약/키워드: binary logistic regression analysis

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ATCA 기반 통신 장비의 수요 요인 분석 및 도입 전략에 관한 연구 (A Study on Influencing factors and strategic market segmentation for diffusing ATCA based network equipments)

  • 유재흥;하임숙;최문기
    • 한국통신학회논문지
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    • 제30권7B호
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    • pp.450-463
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    • 2005
  • ATCA(Advanced Telecom Computing Architecture)는 장기간의 통신 장비 시장의 침체에 돌파구를 마련하기 위해 100여개의 관련 업계가 모여 만든 차세대 표준 네트워크 설계 규격이다. ATCA는 기존 소수의 대형 벤더들이 자사의 고유 시스템을 공급함으로써 발생했던 이기종간의 호환성 문제, 고가의 장비가격, 시스템 변경 및 확장에 있어 어려움, 수요자의 공급업체에 대한 기술 의존성과 같은 문제를 해결할 수 있을 것으로 기대되고 있다. 본 연구에서는 ATCA 기반 장비의 잠재 수요자인 기업의 입장에서 어떠한 요인들을 기준으로 시스템을 채택하는 지를 Rogers의 혁신 이론에 근거하여 살펴보고 있으며 91개 기업체를 대상으로 설문 조사를 실시하여 실증 분석하였다. 로지스틱 회귀분석을 통해 ATCA 장비 구매에 유의한 영향을 주는 요인을 기준으로 군집 분석을 실시하여 기업의 특성에 따른 ATCA 장비 도입 전략을 제시한다.

소양소음인(少陽少陰人)과 태양태음인(太陽太陰人)의 한(汗), 대변(大便), 소변(小便), 소화(消化)에 관한 임상적 비교 연구 (A Comparative Study on the Characteristics (Sweat, Stool, Urine, Digestion) of Soyang.Soeumin and Taeyang.Taeumin in Sasang Constitution)

  • 박효진;이영섭;박성식
    • 사상체질의학회지
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    • 제18권1호
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    • pp.107-117
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    • 2006
  • 1. Objectives There are many studies on the ordinary symptoms based on Sasang constitution. But there. are not quite satisfactory between the types of Sasang constitution. So This study is for learning the characteristics of ordinary symptoms depending on Soyangin Soeumin and Taeyangin Taeumin of the Sasang constitution. 2. Methods One thousand and two hundred twenty nine subjects were included in Bundang Oriental Hospital of Dongguk University. We classified them into the each type of Sasang Constitutional Medicine(SCM) by the well-trained SCM specialist, and assessed their ordinary features by the questionnaire. Binary logistic regression analysis was applied to evaluate the influence of ordinary features to the diagnosis of SCM. 3. Results (1) Compared to Taeyangin Taeumin, Soyangin Soeumin do not sweat a lot. Even if Soyangin Soeumifl do sweat, one does not feel refreshed. Soyangin Soeumin do not sweat while sleeping at night nor eating meals, but discharges cold sweat if one does not feel well. (2) Compared to Taeyangin Taeumin, Soyangin Soeumin go to stool less frequently and have diarrhea when one does not feel well. Soyangin Soeumin do not feel irritated even though one is not able to go to stool for one day. (3) Compared to Taeyangin Taeumin, Soyangin Soeumin do not have foams in urine. (4) Compared to Taeyangin Taeumin, Soyangin Soeumin tend to eat slow, do not eat a lot normally, do not have a great appetite, have problems for digestion, and especially have difficulties in digestion when one is stressed. 4. Conclusions We found that Taeyangin Taeumin and Soyangin Soeumin have characteristics of ordinary symptoms, but partly there are not in accoradance with ones what Lee ]e-Ma said in his book. So in future we hope clinical studies are required steadily.

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CT Findings of Persistent Pure Ground Glass Opacity: Can We Predict the Invasiveness?

  • Liu, Li-Heng;Liu, Ming;Wei, Ran;Jin, Er-Hu;Liu, Yu-Hui;Xu, Liang;Li, Wen-Wu;Huang, Yong
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권5호
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    • pp.1925-1928
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    • 2015
  • Background: To investigate whether CT findings can predict the invasiveness of persistent cancerous pure ground glass opacity (pGGO) by correlating the CT imaging features of persistent pGGO with pathological changes. Materials and Methods: Ninety five patients with persistent pGGOs were included. Three radiologists evaluated the morphologic features of these pGGOs at high resolution CT (HRCT). Binary logistic regression was used to assess the association between CT findings and histopathological classification (pre-invasive and invasive groups). Receiver operating characteristic (ROC) curve analysis was performed to evaluate the diagnostic performance of diameters. Results: A total of 105 pGGOs were identified. Between pre-invasive (atypical adenomatous hyperplasia, AAH, and adenocarcinoma in situ, AIS) and invasive group (minimally invasive adenocarcinoma, MIA and invasive lung adenocarcinomas, ILA), there were significant differences in diameter, spiculation and vessel dilatation (p<0.05). No difference was found in air-bronchogram, bubble-lucency, lobulated-margin, pleural indentation or vascular convergence (p>0.05). The optimal threshold value of the diameters to predict the invasiveness of pGGO was 12.50mm. Conclusions: HRCT features can predict the invasiveness of persistent pGGO. The pGGO with a diameter more than 12.50mm, presences of spiculation and vessel dilatation are important factors to differentiate invasive adenocarcinoma from pre-invasive cancerous lesions.

미국내 아시아 이민자들의 의료서비스 이용에 영향을 미치는 요인 (Factors on Healthcare Utilization by Asian Immigrants in the United States)

  • 소애영;;오진아
    • 한국보건간호학회지
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    • 제29권1호
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    • pp.53-66
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    • 2015
  • Purpose: This study was considered in order to identify the factors affecting healthcare utilization by Asian immigrants in the United States. Methods: From February to April 2011, a descriptive survey study was conducted in a convenience sample of 250 Korean and Asian Indian immigrants aged between 40 and 64 in the Triangle area of North Carolina. An author-developed instrument was used to assess predisposing, enabling, and need factors according to Anderson's Behavioral Model of Health Services. Utilization Data analysis was performed by $X^2$-test, t-test, and binary logistic regression. Results: Participants' healthcare services experiences were significantly different when they had a longer stay in the U.S., had been employed, had higher income, were Asian Indians, had better English-speaking skills, better health status, more knowledge of health system and health insurance, had higher satisfaction with the healthcare system, and when they were taking prescribed medications and having health insurance. The strongest association with experience of healthcare services was having health insurance with an adjusted odds ratio (OR) of 15.37 (95% CI 4.95-47.71, p<.001) and self-reported English proficiency (OR=1.99, 95% CI 1.00-3.96, p=.05). Conclusion: Intervention strategies to increase accessibility to healthcare services should focus on these significant predictors.

Impact of nutritional status on birth weight of neonates in Zahedan City, Iran

  • Khoushabi, Fahimeh;Saraswathi, G.
    • Nutrition Research and Practice
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    • 제4권4호
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    • pp.339-344
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    • 2010
  • The objective of this study was to measure anthropometric and haemoglobin level and nutrient intake of expecting women in the third trimester of pregnancy and to relate the birth weight of neonates as outcome of pregnancy. A cross sectional study was performed in Zahedan City. Two hospitals situated in the city were selected based on their approval and cooperation. Five hundred healthy pregnant women in the age group 16-40 years were selected for this study. Findings showed that the mean height, weight, fundal height, and haemoglobin of pregnant women were 156.4 cm, 62.6 kg, 34.2 cm, and 11.1g/dl respectively. Nutrient intake was computed based on 24 hour recall method. The results showed that, the mean intake of energy was 1802 Kcal/day. The intake of protein, calcium, iron, zinc and magnesium were 70.7 g, 544.0 mg, 16.1 mg, 10.6 mg and 266.0 mg respectively. Percentage adequacy of nutrient intakes with reference to RDA recommendation showed 95% and 80% of subjects had sufficient RDA intakes, while energy, calcium, iron and zinc intake considered as insufficient. The mean birth weight of neonates was 3.0 kg and 13% of neonates showed low birth weight. Maternal height, weight, fundal height and haemoglobin level were significantly correlated with birth weight of neonates. Energy, protein and calcium intakes in the third trimester were significantly correlated with birth weight of neonates. Using the binary logistic regression analysis fundal height, haemoglobin level and energy intake of pregnant women were considered as predictor factors of birth weight of neonates.

뇌졸중 위험지표로서의 일반혈액검사 소견에 대한 환자;대조군 연구 (The Case-Control Study on Complete Blood Count as a Risk Factor of Stroke)

  • 이현의;강경원;유병찬;방옥선;백경민;설인찬;김윤식
    • 대한한방내과학회지
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    • 제28권4호
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    • pp.872-885
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    • 2007
  • Objective : Stroke is one of the most common causes of death in Korea. This study was done to evaluate the association of complete blood count (CBC) with the risk of hemorrhagic stroke and ischemic stroke. Methods : In 217-case patients with ischemic stroke or hemorrhagic stroke and 146 healthy control subjects without stroke, hypertension, diabetes mellitus, hyperlipidemia, or ischemic heart disease and 160 controls without ischemic stroke or hemorrhagic stroke, we tested and compared white blood cell count (WBC), red blood cell count (RBC), hemoglobin (Hgb), hematocrit (Hct) and platelet. These data were statically analyzed by general linear models and binary logistic regression analysis to get each adjusted odds ratio. Results :The level of WBC was significantly higher in all cases. The level of RBC, Hct and Hgb was significantly lower in patients of ischemic stroke. The level of platelet was significantly higher in patients of ischemic stroke. Conclusion : These results suggest high WBC may be a risk factor of hemorrhagic stroke and ischemic stroke and low RBC, low Hct, low Hgb and high platelet may be risk factors of ischemic stroke in Koreans.

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Contralateral Reherniation after Open Lumbar Microdiscectomy : A Comparison with Ipsilateral Reherniation

  • Choi, Kyeong-Bo;Lee, Dong-Yeob;Lee, Sang-Ho
    • Journal of Korean Neurosurgical Society
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    • 제44권5호
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    • pp.320-326
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    • 2008
  • Objective : To evaluate the risk factors that may be responsible for the development of contralateral reherniations from ipsilateral ones after open lumbar microdiscectomy (OLM), and to compare surgical outcomes of revision OLM for contralateral reherniations with those for ipsilateral ones. Methods: Seventeen patients who underwent revision OLM for contralateral reherniation were enrolled into Group I, and 35 patients who underwent revision OLM for ipsilateral reherniation were enrolled into Group II. Using medical charts and imaging study results, the differences in the clinical and radiological factors were evaluated between the two groups. Clinical outcomes of each group were compared between the two groups. Results: Significant differences were found in the interval to reherniation from initial surgery (33 months for Group I and 18.6 months for Group II, p=0.009), as well as in the incidences of both protruded disc (35.3% for Group I and 8.6% for Group II, p=0.045) and mild disc degeneration (29.4% for Group I and 5.7% for Group II, p=0.031) at initial surgery. On binary multi-logistic regression analysis, significant differences were found in the interval to reherniation (p=0.027, Odds ratio=1.051) and incidence of mild disc degeneration (p=0.025, Odds ratio= 12.03) between the two groups. There were no significant differences in the improvement of clinical outcomes after revision OLM between the two groups. Conclusion: The interval to reherniation from initial surgery and the grade of disc degeneration at initial surgery were key factors that distinguished the development of contralateral reherniations from ipsilateral ones. Surgical outcomes of revision OLM were similar in both groups.

대학생의 데이트 성폭력 가해 예측요인 (Prediction factors for dating sexual violence of College Students)

  • 이미호
    • 한국학교ㆍ지역보건교육학회지
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    • 제21권3호
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    • pp.35-47
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    • 2020
  • Objectives: This study is a descriptive research study conducted to grasp the Prediction factors of the sexual violence experience of college students. Methods: A convenience sampling was performed for 500 students from one college located in Gyeongsangbuk-do, who agreed to the purpose of this study. Data collection was conducted from October 5, 2015, to October 23, 2015, by filling out the self-report questionnaire. Among the 450 subjects excluding those with missing values, a questionnaire of dating violence experience was applied to 317 college students who answered that they had a friend of the opposite sex, and variables and prediction factors related to dating violence experiences were identified. The statistical methods used were descriptive statistics, x2-test, t-test, Pearson's correlation coefficient and binary logistic regression analysis. Results: As a result of the study, the experience of sexual behavior before entering college (𝑥2=6.52, p=.011), experience of sexual violence damage before entering college(p=.045), the experience of sexual assault before entering college (p=.007) and experience of school violence damage(p=.002) were variables related to the sexual violence experience of college students. School violence victimization (OR=4.831, p=.007) and controlling dating partners (OR=1.349, p<.001) were predictors of dating sexual violence. Dating sexual violence experience group were compared to dating sexual violence non-experience group, the relative degree of controlling dating partners was high (t=4.25, p<.001) and had a traditional gender role attitude (t=2.94, p=.004). and there was a positive correlation (r=.358, p<.001) between controlling dating partners and gender role attitude. Conclusions: In order to prevent sexual violence on dating among college students, it is expected that more effective health education results will emerge if the contents of the school-age school violence victimization experience and the control of dating partners, which are predicted factors of sexual violence on dating, are included in the sexual violence prevention program.

노인의 성태도가 성생활에 미치는 영향: 일반적 특성의 조절효과 (Effect of Sexual Attitude of Aged People on Sexual Life: Moderating Effect of General Characteristics)

  • 신선화;박효정
    • 성인간호학회지
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    • 제26권3호
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    • pp.320-329
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    • 2014
  • Purpose: The purpose of this study was to analyze the effect of sexual attitude among the elderly to their sexual life while exploring the moderating effect of general characteristics in the relationship between sexual attitude and sexual life. Methods: A descriptive research design was used. The subjects were 322 married elderly from four silver centers in Seoul and Gangwon-do. Aging Sexuality Attitude Scale developed by White (1982) was used to examine sexual life status and general characteristics of the subjects (gender, age, academic background, religion, economic status, and residential type). For data analysis, ${\chi}^2$-test, t-test, and ANOVA were conducted. Since the dependent variable of sexual life is a binary variable, hierarchical logistic regression was implemented. Results: There were 180 people (55.9%) who had a sexual life. Depending on gender (${\chi}^2$=35.03, p<.001), academic background (${\chi}^2$=29.45, p<.001), and economic status (${\chi}^2$=7.36, p=.025), the subjects showed significant difference in terms of sexual life. Regarding sexual attitude, the subjects showed significant difference depending on gender (t=-5.47, p<.001), age (t=-2.31, p=.021), academic background (t=5.16, p<.001), economic status (F=3.17, p=.043), and sexual life status (t=4.99, p<.001). Conclusion: It is important to devise the sex education program in consideration of gender, age, and academic background that showed moderating effects.

대규모 프로스포츠시설 입지에 따른 도시특성요인 비교분석 (Comparing Factors of Urban Characteristics according to Location of Large Professional Sports Facilities)

  • 서원석;곽정현
    • 한국콘텐츠학회논문지
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    • 제16권3호
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    • pp.712-721
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    • 2016
  • 본 연구는 프로스포츠시설의 입지 유무에 따른 도시특성차이 및 결정요인 분석을 목적으로 한다. 이를 위해 228개 시군구를 대상으로 도시별 특성을 사회 경제 문화 교통 공간특성으로 구분한 뒤 t-검정 및 이항로지스틱모형을 이용해 분석을 수행하였다. 분석 결과 프로스포츠시설 입지의 주요 결정요인은 경제적 여건, 프로스포츠시설의 운영과 관련된 인구, 교통여건 등으로 나타났다. 구체적으로 입지도시는 교통결절지로 일정한 구매력을 갖춘 청장년층이 많고 입지를 위한 대규모 토지가 형성되어 있다는 특징과 함께 일정수준 이상의 도시로서의 기능을 가지고 있는 곳일 가능성이 더 높아진다는 결론이 도출되었다. 최근 각 지방정부는 관중이 유입됨으로써 지역경제를 활성화시킬 수 있고, 반영구적인 시설이용을 통해 긍정적인 파급효과를 누릴 수 있으며, 이를 통해 도시경쟁력 향상이 기대될 수 있다는 점에서 대규모 프로스포츠시설 유치에 관심을 두고 있다. 본 연구결과는 도시경쟁력 향상에 대한 대안으로써 대규모 프로스포츠시설 유치정책이 지방정부의 매력적인 선택이 될 수 있다는 시사점을 제공하고 있다.