• Journal of Korean Neurosurgical Society
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• 제52권1호
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• pp.42-47
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• 2012

Objective : The aim of this prospective study was to demonstrate the influence of some factors on the prognosis of microvascular decompression in 37 patients with trigeminal neuralgia. Methods : The results of microvascular decompression (MVD) in 37 patients with trigeminal neuralgia were evaluated at 6 months after surgery and were compared with clinical and operative findings. Results : The sex of the patient, the patient's age at surgery, the side of the pain, and the duration of symptoms before surgery did not play any significant roles in prognosis. Also, the visual analogue scale (VAS) of the patient, the duration of each pain attack, and the frequency of pain over 24 hours did not play any significant roles in prognosis. In addition, intraoperative detection of the type of conflicting vessel, the degree of severity of conflict, and the location of the conflict around the circumference of the root did not play any roles in prognosis. The only factors affecting the prognosis in MVD surgery were intraoperative detection of the site of the conflict along the root and neuroradiological compression signs on preoperative magnetic resonance imaging (MRI)/magnetic resonance angiography (MRA). Conclusion : These findings demonstrated that if neurovascular compression is seen on preoperative MRI/MRA and/or compression is found intraoperative at the root entry zone, then the patient will most likely benefit from MVD surgery.

• 대한통합의학회지
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• 제12권2호
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• pp.155-166
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• 2024

Purpose : This study aims to identify key factors for predicting dropout risk at the university level and to provide a foundation for policy development aimed at dropout prevention. This study explores the optimal machine learning algorithm by comparing the performance of various algorithms using data on college students' dropout risks. Methods : We collected data on factors influencing dropout risk and propensity were collected from N University. The collected data were applied to several machine learning algorithms, including random forest, decision tree, artificial neural network, logistic regression, support vector machine (SVM), k-nearest neighbor (k-NN) classification, and Naive Bayes. The performance of these models was compared and evaluated, with a focus on predictive validity and the identification of significant dropout factors through the information gain index of machine learning. Results : The binary logistic regression analysis showed that the year of the program, department, grades, and year of entry had a statistically significant effect on the dropout risk. The performance of each machine learning algorithm showed that random forest performed the best. The results showed that the relative importance of the predictor variables was highest for department, age, grade, and residence, in the order of whether or not they matched the school location. Conclusion : Machine learning-based prediction of dropout risk focuses on the early identification of students at risk. The types and causes of dropout crises vary significantly among students. It is important to identify the types and causes of dropout crises so that appropriate actions and support can be taken to remove risk factors and increase protective factors. The relative importance of the factors affecting dropout risk found in this study will help guide educational prescriptions for preventing college student dropout.

• Journal of Preventive Medicine and Public Health
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• 제36권4호
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• pp.367-372
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• 2003

Objectives : There are many concerns about ginseng as a cancer chemopreventive substance, but there have been few epidemiological studies on ginseng, This study sought to examine the relationships between ginseng intake and cancer incidence in the Kangwha cohort. Methods ; Between March 1985 and December 1999, 2697 males, aged 55 or over, as of 1985, were followed up for their cancer incidence. The cancer incidence rate, standardized incidence ratio and risk ratios were calculated according to ginseng intake. A Cox proportional hazard model was used to adjust for age at entry, smoking, alcohol intake, hypertension, and body mass index. Results & Conclusions : The ginseng intake group had the same cancer (C00-C97) incidences (Standardized Incidence Ratio: SIR=1.11, 95% Confidence Interval=0.97-1.27) and the same risk ratio (RR=1.09, 95% Confidence Interval=0.85-1.41) as the no-intake group. Analyzing the subjects that had followed up from 1990, however, the ginseng intake group had lower cancer incidences at all sites (RR=0.79, 95% Confidence Interval=0.58-1.09). This was a cohort study to try and evaluate the association between ginseng intake and the incidences of cancer, The results of this study provide no clear conclusions on the cancer preventive effects of ginseng. Therefore, further study is needed in the future.

• 한국환경생태학회지
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• 제22권3호
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• pp.325-331
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• 2008

본 연구는 북한산국립공원 도봉지역을 이용하는 탐방객들의 이용행태를 분석하고 현재 적용되고 있는 국립공원관리정책에 대한 탐방객 태도를 파악하여 북한산국립공원 탐방객 관리에 필요한 기초 정보의 제공을 목적으로 수행되었다. 이를 위해 응답자 직접기입 방식의 설문조사를 북한산국립공원 도봉지구 주 탐방로 입구에서 공원탐방을 마치고 귀가하는 239명의 탐방객들을 대상으로 실시하였다. 연구결과, 북한산국립공원의 탐방객 인구통계적 특성(연령, 소득, 직업군 등)과 탐방행태(방문목적, 동반자 유형 등)는 다른 국립공원에서의 조사결과와는 차이를 보였다. 응답자들의 전체적인 탐방 만족도 수준은 보통수준 이상의 대체적으로 만족하는 범위로 나타났다. 특히, 입장료 폐지조치에 의한 탐방객 증가와 이에 따른 등산로 훼손 문제 및 쓰레기 문제는 심각한 것으로 인식되고 있어 시급히 해결해야할 관리문제로 제기되었다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권1호
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• pp.255-259
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• 2016

Background: Reliable and validated instruments are needed in order to study the quality of life in myeloma patients. This study aimed to translate and explore the psychometric properties of the European Organisation for Research and Treatment of Cancer (EORTC) myeloma module (QLQ-MY20) in Iranian patients. Materials and Methods: Two hundred and fifteen patients with multiple myeloma (MM) were recruited from Imam Khomeini Hospital, Tehran. A standard forward-backward translation procedure was implemented. Participating patients were asked to complete the EORTC QLQ-C30 and the QLQ-MY20 three times, at study entry, after two weeks, and again after three months. Data were tested for the range of measurement, internal consistency, test-retest reliability, known group comparison, responsiveness and factor structure. Results: Mean age of the patients was 60.7 years. No floor and ceiling effects were seen for the QLQ-MY20. Cronbach's ${\alpha}$ was greater than 0.80 for all three multi-item scales (ranging from 0.82 to 0.93). All four scales had test-retest reliability of 0.85 or greater. Results of the confirmatory factor analysis that the hypothesized 3-scale measurement model of the QLQ-MY20. Moreover, the Persian version for the QLQ-MY20 differentiated between subgroups of the patients in terms of beta-2 microglobulin, fracture and performance status. The responsiveness of the QLQ-MY20 to change over time was confirmed within 3 months. Conclusions: the results of our study indicate that our Iranian version of the QLQ-MY20 is a feasible, reliable and valid questionnaire for assessing the condition-specific quality of life of patients with MM.

• Journal of Yeungnam Medical Science
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• 제8권2호
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• pp.24-34
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• 1991

1986년 1월부터 1988년 6월까지 30개월동안 '말이 늦다(언어발달지연)'는 것을 주소로 본원 소아과에 내원한 환아 중 언어발달지연의 진단기준에 부합하였던 52명의 아동을 대상으로 관찰하여 다음과 같은 성적을 얻었다. 1. 환아의 초진시 연령은 2-2.9세군이 16례 (30.8%), 3-3.9세군이 11례(21.2%)로 전체 환아의 반수 이상이 2-3.9세 사이에 내원했다. 2. 성별분포로는 남아가 39례, 여아가 13례로서 3:1의 비로 남아에서 많았다. 3. 원인은 지능발달지연이 28례(53.8%)로 가장 많았으며 그 외 발달성 언어장애가 12례(23.1%), 자폐증이 7례(13.5%)의 순으로 많았다. 4. 동반된 질환들로는 발음장애가 9례(17.3%)로 가장 많았고 사시가 5례(9.6%), 경련성질환이 4례(7.7%)에서 있었다. 5. 치료는 특수교육이 23례(44.2%), 언어치료가 12례(23.1%), 정신과적 자문이 7례(13.5%)에서 행해졌다.

• 한국보건간호학회지
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• 제16권2호
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• pp.354-377
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• 2002

Aging population is a global trend and Korea is no exception. Due to the progress of the medical and scientific sectors, increase in the average lifetime incurred increase in the number of elderly people. Meanwhile, the family function of supporting the elderly has become a major issue in a society due to the changes in the society's structure and increased entry of the women into the workforce. As a means to substitute the protection of the elderly who are not protected at their respective homes and to replace the tending needs, weekly protection centers and short-stay centers for the elderly were established and operated in Seoul since 1992. However, structured and satisfactory services are not yet to be provided, thus this research intends to understand the current situation at the short-stay centers for the elderly, to identify users' characteristics and to conduct study on nursing need for the health reasons so that the results of the research can be utilized as basic data for the development of nursing care program. Towards this end, this research targeted 142 elderly people who were undergoing treatment at the 11 short-stay centers for the elderly out of total of 13 located in Seoul that were willing to cooperate. The research was conducted from April to May 2002, with the measurement tool developed by Rhee, Seon-ja (2001) to measure the level of nursing need. Then data was collected and analyzed using SPSS program. The results are as follows. The general characteristics of users of the short-stay centers for the elderly were: 123 females $(86.6\%)$, 19 males $(13.4\%)$ and 72 elderly were over the age of 80 $(50.7\%)$. Among these, 24$(16.9\%)$ were living by themselves. Among the illnesses that the subjects were inflicted with were: dementia $(54.2\%)$, stroke $(54.1\%)$ and high blood pressure $(50.7\%)$, in the respective order. Despite the fact that they were diagnosed with illnesses, $47.2\%$ responded that they do not undergo special treatment due to financial reasons. When the level of needs for nursing care among the elderly who use the short-stay centers is divided into informational. physical. and emotional need levels and scored between zero to two, the level of emotional need is the highest with 1.80, followed by physical (1.45) and informational (1.44) need levels. As for the realities of services at the centers and improvement areas, restriction on term was cited as the greatest inconvenience with $38.7\%$, followed by lack of budget (24 respondents, $16.9\%$). Wishful services were financial assistance $(46.5\%)$, medical and nursing services $(40.1\%)$, meal provision service $(8.5\%)$ and counseling service $(4.9\%)$, in the respective order. Based on the above mentioned results, the research identified the need to develop nursing program for the patients of dementia that can be applied onto the short-stay centers and the need to develop volunteer service, backed by societal support. Also, placement of specialized cadre of professionals is needed so that medical and nursing service functions can be provided in a complementary manner.

• 한국인구학
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• 제25권2호
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• pp.5-40
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• 2002

본고는 생애에 걸친 한국여성의 경제활동참가유형은 어떠한 것이며, 첫 노동시장 이동을 결정하는 요인은 무엇인지를 규명하고자 하였다. 분석모형으로 첫 비취업으로의 이행확률 결정요인을 추정하기 위해 가변변수를 통합하고, 또한 지속기간 의존성과 비관측 이질성을 통합할 수 있도록 Lancaster(1979)의 방식을 따라 기본해자드 모형을 확장시켰다. 분석자료는 한국여성개발원이 2001년에 실시한 $\ulcorner$제4차 여성취업실태조사$\lrcorner$ 결과이며, 최종분석대상은 표본가구에 거주하는 15세 이상 65세미만의 여성 중 재학생을 제외한 4,109 명이다. 여성의 이학 후 관측시점까지의 햇수는 평균 21.3년인데, 이 기간 중 실제로 취업한 햇수는 8.2년으로 총 기간의 38.5%에 해당한다. 또한 이 취업기간의 비중은 정규분포를 나타내지 않고 산포되어 있어, 여성은 노동공급의 연속성 측면에서 매우 이질적임을 보여준다. 여성의 첫 노동시장 퇴출을 결정하는 요인으로 직업과 생애주기가 유의하게 나타났다. 즉 전문직에 종사할수록 노동시장의 퇴출을 늦추는 한편, 결혼이나 출산에 비해‘6세 미만 자녀유무’가 중요 퇴출요인으로 나타났다. 이것은 출산이후에도 취업을 계속하던 여성들이 양육역할의 가중 및 둘째 자녀의 출산 등으로 취업을 중단하는 것을 시사한다. 그러나 여성의 학력은 생애주기에 관계없이 일관되게 취업지속기간을 짧게 하는 것으로 나타나 인적자본이론의 기대와 배치된다. 첫 퇴출로의 이행률은 부의 기간지속성을 나타내며, 비관측 이질성을 통제한 이후에도 부의 기간의존성이 여전하여 진정한(true) 음의 기간의존성이 존재하는 것으로 추정된다. 비관측 이질성을 통제할 때, 그 동안 부분적으로 존재하던 세대효과가 완전히 사라진다 따라서 최근 세대일수록 취업연속성이 증가하는 추이가 나타난다고 할 수 없으며, 그간 여성의 경제활동참여 증가가 취업연속성의 향상에 의해 기인한 것이 아니라 취업경력이 짧은 신규 진입자의 증가에 의한 것임을 암시한다.

• 한국유통학회지:유통연구
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• 제15권3호
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• pp.71-110
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• 2010

본 연구에서는 항공권 예약 발권 웹사이트의 서비스 품질을 측정 뿐만 아니라 서비스 회복도 측정하고자 하였다. 또한 서비스 품질과 서비스 회복이 고객만족 및 충성의도에 미치는 영향관계를 실증하고자 하였다. 온라인 서비스 품질과 온라인 서비스 회복의 측정을 위해 Parasuraman, Zeithaml, & Malhotra(2005)가 개발한 E-S-QUAL과 E-RecS-QUAL을 사용했으며, 했다. E-S-QUAL은 온라인 서비스 품질을 측정하는 도구로써, 효율성, 시스템 이용가능성, 이행성, 프라이버시의 4개 차원 22개 항목으로 구성된다. E-RecS-QUAL은 온라인 서비스 회복을 측정하는 도구로써, 반응, 보상, 접촉의 3개 차원 11개 항목으로 구성된다. 실증분석을 위한 설문조사는 항공사나 여행사의 웹사이트를 통해 국내 외 항공권을 구입해 본 경험이 있는 소비자를 대상으로 실시하였는데, 총 400부가 회수되었고, 이 중 342부를 최종분석에 사용하였다. 실증분석을 위해 AMOS 7.0과 SPSS 15.0을 사용하였다. 먼저, SPSS 15.0을 사용하여, 요인점수를 이용한 회귀분석으로 가설검증을 한 결과, <가설 I-1, 2, 3, 4, II-1, 2, 3, III-1, IV-1>이 전부 채택되었다. 온라인 서비스 품질과 온라인 서비스 회복의 각 차원은 모두 전반적인 서비스 품질에 유의한 영향을 보였고, 전반적인 서비스 품질은 고객만족에 유의한 영향을 미쳤다. 마지막으로 고객만족 역시 충성의도에 유의한 영향을 미치는 것으로 확인되었다. 한편 AMOS 7.0을 사용하여 모형 분석을 하였는데, 모형의 적합도는 가설검증을 하기에 합당한 수치가 나왔다. 이를 토대로 가설검증을 한 결과, <가설 I-1, 3, II-1, 3, III-1, IV-1>은 채택되었고, <가설 I-2, 4, II-2>는 기각되었다. 이 결과는 Parasuraman et al.(2005)이 주장한 것처럼 E-S-QUAL을 나타내는 데는 요인점수를 이용한 회귀분석이 더 적합하다는 것을 보여주는 것이라고 판단된다. 이를 토대로 본 연구의 시사점을 정리하였다.