• 보건행정학회지
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• 제31권2호
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• pp.197-206
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• 2021

Background: The purpose of this study was to identify factors affecting unmet healthcare needs due to physical accessibility by residential area by utilizing the Korea Community Health Survey (KCHS). Methods: Andersen's medical service behavioral model was applied to analyze the enabling factors, predisposing factors, and needs factors of unmet healthcare needs focusing on residential areas. This study used data from the KCHS (2017-2019, n=440,792). We used multivariate survey logistic regression analysis in order to identify affecting factors. Sub-group analysis was conducted in order to evaluate the effects of residential areas. Results: Some participants (2,621, 0.59%) had experienced unmet healthcare needs due to physical accessibility and 2,047 subjects (78.1%) of them lived in rural areas. Multivariate survey logistic regressions revealed that experience of unmet healthcare needs due to physical accessibility increased when people lived in rural areas (odds ratio [OR], 3.95; 95% confidence interval, 3.46-4.51). Conclusion: This study showed that despite the development of transportation and efforts to alleviate medical inequality, residents in rural areas may still have higher experience of unmet healthcare needs due to physical accessibility compared to the metropolitan city regardless of any other sub-group differences (OR range, 1.90-6.31). This study suggested that government and policymakers should identify the causes of the experience of unmet healthcare needs due to physical accessibility and should develop policies to alleviate those healthcare disparities.

• Journal of Korean Neurosurgical Society
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• 제61권5호
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• pp.645-652
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• 2018

Objective : This study aimed to investigate the rates, types, and risk factors of surgical site infection (SSI) following intracranial neurosurgical procedures evaluated by a Korean SSI surveillance system. Methods : This was a prospective observational study of patients who underwent neurosurgical procedures at 29 hospitals in South Korea from January 2017 to June 2017. The procedures included craniectomy, craniotomy, cranioplasty, burr hole, and ventriculoperitoneal shunt. Univariate and multivariate logistic regression analyses were performed. Results : Of the 1576 cases included, 30 showed infection, for an overall SSI rate of 1.9%. Organ/space infection was the most common, found in 21 out of the 30 cases (70%). Staphylococcus aureus was the most common (41%) of all bacteria, and Serratia marcescens (12%) was the most common among gram-negative bacteria. In univariate analyses, the p-values for age, preoperative hospital stay duration, and over T-hour were <0.2. In a multivariate analysis of these variables, only preoperative hospital stay was significantly associated with the incidence of SSI (p<0.001), whereas age and over T-hour showed a tendency to increase the risk of SSI (p=0.09 and 0.06). Conclusion : Surveillance systems play important roles in the accurate analysis of SSI. The incidence of SSI after neurosurgical procedures assessed by a national surveillance system was 1.9%. Future studies will provide clinically useful results for SSI when data are accumulated.

• 기본간호학회지
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• 제21권4호
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• pp.413-422
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• 2014

Purpose: The purpose of this study was to identify the nutrition-related factors influencing the prevalence of pressure ulcers among patients admitted to an intensive care unit. Methods: Research participants were 112 patients who were admitted to the ICU of a university hospital. Data were collected through questionnaires which included general characteristics, diet-related characteristics, nutritional status, and pressure ulcer status. Multivariate logistic regression was used to identify independent factors association with prevalence of pressure ulcer Results: The prevalence of pressure ulcers was 58 patients (51.8%) at 10th day after ICU admission. In multivariate analysis, prevalence of pressure ulcers at 10th day in ICU was significantly higher in the nutritional risk group (OR=6.43), malnutrition group (OR=88.02), and deceased serum albumin group (OR=28.83). Conclusion: The results of this research indicate that scores on MNA (Mini Nutritional Assessment) and serum albumin were significant predictors of pressure ulcer prevalence in ICU patients. Therefore, regular MNA-SF and albumin checkups are needed to identify risk for pressure ulcer for ICU patients. In the case of decreased MNA-SF scores and serum albumin levels, more intensive pressure ulcer care is needed for ICU patients.

• 대한수의학회지
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• 제45권3호
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• pp.405-410
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• 2005

To analyze and identify selected risk factors for infectious bronchitis virus (IBV) infection in the growing and laying period of laying-hen flocks, a longitudinal field study was conducted with 27 commercial flocks reared in three provinces of Korea during the period from May 2003 to April 2004. Using monitored data for IBV infection status among study flocks we computed the multivariate odds ratios (ORs) and their corresponding confidence intervals (CIs), and population attributable risks (PARs). Multivariate logistic regression showed significant risk increments for: continuous entry of chick (OR=1.9, 95% CI, 0.7-69.1) and operation years of the layer house greater than or equal to 5 years (OR=3.2, 95%CI, 1.6-389.9). No significant interaction was found between variables. The PAR suggested that continuous entry of chick (PAR=32%) and ${\geq}5years$ of house operation (PAR=84%) had the highest impacts on IB presence in laying-hen flocks under study. Of the two significant factors, however, operation year of the layer house lacks an easy applicability in preventing IB control strategies, and the possibility of confounder cannot be ruled out.

• 대한간호학회지
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• 제40권6호
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• pp.852-862
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• 2010

Purpose: This study was done to investigate differences in health behaviors by job stress level in male and female workers in a large-sized company. Methods: Participants were 576 male and 228 female workers who completed questionnaires. Job stress was measured using the 'Short Form Korean Occupational Stress Scale (SF-KOSS)'. Health behaviors included smoking, alcohol consumption, regular exercise, and diet. Frequency, mean, SD, chi-square test, and multivariate logistic regression using SAS version 9.1 were used to analyze data. Results: Smoking, drinking and regular exercise rates were not different by job stress level in male or female workers. Only regular diet was significantly different by job stress level in male and female workers. From multivariate analysis, the alcohol consumption rates for female workers differed by marital status. Regular exercise rate was significantly related to age for male workers and type of employment for female workers. After adjusting for demographic and work-related characteristics, regular diet significantly differed by shift work for male workers and marital status and shift work for female workers. Conclusion: The findings of the study indicate that nursing interventions should be developed to manage job stress to improve diet habits for male and female workers in large-sized companies.

• Journal of Korean Neurosurgical Society
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• 제45권6호
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• pp.336-340
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• 2009

Objective : The factors that influence the prognosis of patients with hemifacial spasm (HFS) treated by microvascular decompression (MVD) have not been definitely established. We report a prospective study evaluating the prognostic factors in patients undergoing MVD for HFS. Methods : From January 2004 to September 2006, the authors prospectively studied a series of 293 patients who underwent MVD for HFS. We prospectively analyzed a number of variables in order to evaluate the predictive value of independent variables for the prognosis of patients undergoing MVD. The patients were followed-up at regular intervals and divided into as cured and unsatisfactory groups based on symptom relief. Uni- and multivariate analyses were performed using logistic regression models. Results : A total 273 of 293 (94.2%) patients achieved symptom relief within one year after the operation. Intraoperatively, the indentation of the root exit zone was observed in 259 (88.5%) patients. Uni- and multivariate analyses revealed that the symptoms at postoperative 3 months (p<0.001) and indentation of the root exit zone (p=0.036) were associated with good outcomes. Conclusion : The intraoperative finding of root exit zone indentation will help physicians determine the prognosis in patients with HFS. To predict the prognosis of HFS, a regular follow-up period of at least 3 months following MVD should be required.

• Journal of Gastric Cancer
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• 제19권3호
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• pp.344-354
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• 2019

Purpose: No standard technique has been established for esophagojejunal anastomosis during laparoscopic total gastrectomy (LTG) for gastric cancer owing to the technical difficulty and high complication rate of this procedure. This study was performed to compare the short-term outcomes of circular and linear stapling methods after LTG. Materials and Methods: A total of 106 patients treated between July 2010 and July 2018 were divided into 2 groups according to the following anastomosis procedures: hemi-double-stapling technique (HDST; circular stapling method; group C, n=77) or overlap method (linear stapling method; group L, n= 29). The clinicopathological features and postoperative outcomes, including complications, were analyzed. Multivariate analysis was performed using a logistic regression model to identify the independent risk factors for anastomotic complications. Results: The incidence of anastomotic complications was significantly higher in group C than in group L (28.0% vs. 6.9%, P=0.031). The incidence of anastomosis leakage did not differ between the groups (6.5% vs. 6.9%, P=1.000). However, anastomosis stricture occurred only in group C (13% vs. 0%, P=0.018). Multivariate analysis showed that the anastomosis type was significantly related to the risk of anastomotic complications (P=0.045). Conclusions: The overlap method was superior to the HDST with respect to anastomotic complications, especially anastomosis stricture.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제24권6호
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• pp.535-545
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• 2021

Purpose: This study aimed to analyze the practice of complementary feeding and its influencing factors in children under 2 years of age in Indonesia. Methods: This cross-sectional study used data obtained from the 2017 National Socioeconomic Survey. The sample totaled 1,751 households with children under 2 years of age, who received complementary feeding in urban and rural communities. Furthermore, the practice of complementary feeding was evaluated on the basis of the variations in provided food grouped into two categories: complete and incomplete. This study applied bivariate and multivariate analytical methods. Multivariate analysis was performed using binary logistic regression. Results: The proportion of children under 2 years of age who received complementary feeding with complete variant food was 15.9%, while that with incomplete variant food was 84.1%. Furthermore, the factor influencing the practice of complementary feeding among the children was the mother's educational level (odds ratio: 1.481, 95% confidence interval: 0.245-0.943). Conclusion: Complete complementary feeding, which involves a variety of food sources, is the best approach to improve the nutritional status of infants. Therefore, the source of food for complementary feeding must be accessible to all communities.

• Journal of the Korean Data and Information Science Society
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• 제20권2호
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• pp.321-328
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• 2009

회귀분석에서 설명변수들 사이에 상관이 높으면 최소제곱추정법에서 구한 회귀계수들의 정도가 떨어진다. 다중공선성이라 불리는 이 현상은 실제 자료분석에서 심각한 문제를 야기시킨다. 이 다중공선성의 문제를 극복하기 위한 여러 가지 방법이 제안되었다. 능형회귀, 축소추정량 그리고 주성분분석에 기초한 주성분회귀와 고유값회귀등이 있다. 지난 수십 년간 많은 통계학자들은 일반적인 중 회귀에서 감도분석에 관해 연구하였으며, 주성분회귀, 고유값회귀와 로지스틱 주성분회귀에 대해서도 같은 주제로 연구하였다. 이 모든 방법에서 주성분분석은 중요한 역할을 하였다. 또한, 많은 통계학자들이 주성분분석과 관련된 다변량 방법에서 감도분석에 대해 연구를 하였다. 본 연구논문에서는 주성분회귀와 고유값회귀를 소개하고, 또한 주성분회귀와 고유값회귀에서 감도분석의 방법을 소개하고, 마지막으로 이들두방법에 대한 감도분석의 성질에 대해 논의하였다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권19호
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• pp.8149-8153
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• 2014

Background: To compare the value of contrast-enhanced ultrasound (CEUS) qualitative and quantitative analysis in the identification of breast tumor lumps. Materials and Methods: Qualitative and quantitative indicators of CEUS for 73 cases of breast tumor lumps were retrospectively analyzed by univariate and multivariate approaches. Logistic regression was applied and ROC curves were drawn for evaluation and comparison. Results: The CEUS qualitative indicator-generated regression equation contained three indicators, namely enhanced homogeneity, diameter line expansion and peak intensity grading, which demonstrated prediction accuracy for benign and malignant breast tumor lumps of 91.8%; the quantitative indicator-generated regression equation only contained one indicator, namely the relative peak intensity, and its prediction accuracy was 61.5%. The corresponding areas under the ROC curve for qualitative and quantitative analyses were 91.3% and 75.7%, respectively, which exhibited a statistically significant difference by the Z test (P<0.05). Conclusions: The ability of CEUS qualitative analysis to identify breast tumor lumps is better than with quantitative analysis.