• 대한영상의학회지
• /
• 제83권3호
• /
• pp.620-631
• /
• 2022

목적 유방암 환자의 수술 전 자기공명영상에서 림프절 전이를 시사하는 소견들에 따른 진단 성적을 알아보고자 한다. 대상과 방법 수술 전 유방 자기공명영상을 촬영하고 유방암 수술을 시행한 192명의 환자를 후향적으로 분석하였다. 영상 소견에서 림프절의 크기와 장경/단경의 비율, 피질의 두께와 모양, 변연, 수질의 소실, 비대칭성, T2 강조영상에서의 신호강도, 이른 조영증강의 정도, 조영증강의 역학을 조사하였다. 수신자판단특성곡선 분석, 카이 분석과 t-검정, 맥니마 검정을 이용하여 통계분석을 시행하였다. 결과 단경의 증가, 피질의 불규칙한 모양과 피질 두께의 증가, 수질의 소실, 비대칭성, 피질의 불규칙한 변연 그리고 T2 강조영상에서의 낮은 신호강도는 전이를 시사하는 의미 있는 소견이었다. 이중 단경과 피질의 두께에 대해 수신자판단특성곡선 분석으로 각각 8.05 mm와 2.75 mm로 절단값을 얻었다. 2.75 mm 이상의 피질 두께, 피질의 불규칙한 모양은 맥니마 검정으로 다른 소견들과 비교할 때 민감도의 유의한 차이를 보였다. 피질의 불규칙한 변연(100%)은 가장 높은 특이도를 보였다. 결론 유방 자기공명영상의 전이 림프절 분석에서 2.75 mm 이상의 피질 두께와 피질의 불규칙한 모양은 다른 소견들보다 높은 민감도를 보이고 피질의 불규칙한 변연은 가장 높은 특이도를 보이는 소견이다.

• 한국응급구조학회지
• /
• 제24권2호
• /
• pp.123-131
• /
• 2020

Purpose: This study aimed to find out the effectiveness of gum elastic bougies for intubation in comparison to stylet according to airway type using a manikin. Methods: The study subjects were 52 paramedic students who intubated using a Macintosh laryngoscope and compared stylet and gum elastic bougie use in a 7.5 mmID endotracheal tube, on a manikin with either normal or difficult airway. Difficult airway was made Philadelphia neck collar. Collected data included intubation time, accuracy and ease of intubation, later analyzed by frequency analysis, descriptive analysis, independent t-test, chi square test, paired t-test, and McNemar test using SPSS Statistics 18.0. Results: There was a significant difference in intubation time according to intubation device and airway type (p=.000). There was no significant difference in accuracy of intubation according to intubation device or airway type (normal airway p=1.000, difficult airway p=.052). There was a significant difference in ease of intubation scale according to intubation device and airway type (p=.000, p=.000). Conclusion: Based on the speed and ease of intubation, gum elastic bougie is recommended for intubation in patients with difficult airways such as those with cervical injury.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권6호
• /
• pp.2871-2876
• /
• 2016

The Pap smear test is recommended for early diagnosis of cervical cancer. The aim of this study was to assess knowledge and behavior regarding the Pap smear test based on the Health Belief Model (HBM) in women referred to premarital counseling classes, Hamadan, Iran. This quasi-experimental study was conducted on 330 women, who were allocated randomly to two case and control groups (n=165). Two educational session classes were performed in the case group. Two stages in before and after intervention groups were evaluated. Analysis of data was performed by SPSS/16.0, using t-test, $x^2$, and McNemar's test. P-values <0.05 were regarded as significant. There was no significant difference between the mean scores of the various structures of this model in two groups before the intervention. However, after the intervention there were significant increase in mean score of knowledge and all variables of HBM in the intervention group(P<0.001). The findings of this study highlight the important role of education about cervical cancer on changing women's beliefs about cervical screening.

• 한국문헌정보학회지
• /
• 제31권3호
• /
• pp.165-208
• /
• 1997

온라인 열람목록의 이용자 인터페이스 특성이 이용행태에 미치는 영향을 파악하고, 이용자에게 보다 친근한 인터페이스를 평가하여 시스템 설계의 방향을 제시하는 데에 본 연구의 목적을 두었다. 이용자 인터페이스에 있어서 뚜렷한 특성상의 차이를 보이는 두 시스템을 대상으로 하여 $2\times2$ 교차계획법으로 이용행태연구를 위한 실험연구를 수행하였다. 65명의 탐색자가 실험에 참여하였다. $2\times2$ 교차계획법에서의 이월효과와 시스템효과, $\chi^2$검증, t 검증 매크네마 검증, 최대우도법을 통한 주변대칭성 검증, 인자분석, 회귀분석, 분산분석 등의 통계기법을 검증해야 할 가설과 데이터의 성격에 따라 적절히 적용하여 분석하였다.

• 재활간호학회지
• /
• 제2권2호
• /
• pp.163-175
• /
• 1999

This study was done to identify the effectiveness of a proper positioning on musculoskeletal complication on patient with Stroke by using a quasi-experimental study. A total of 18 patients were selected as a subject from June 1st to October 31th 1998 who had been hospitalized at Intensive Care Units in K medical center. A experimental group consists of 8 patients who were given proper positioning every two hours. A control group consists of 10 patients who were given traditional positioning. The collected data were analyzed by SPSS windows including $X^2$-test (Fisher's exact method), Wilcoxon Rank Sum test and McNemar test. The result of this study was summerized as follows : 1) The experimental group with proper positioning has shown lower shoulder pain score, dorsiflexion contracture score, Shoulder subluxation score and higher Range of Motion and than the control group. 2) The experimental group with proper positioning has shown lower muscle pain score and edema score than the control group, but it was not statistically significant.Therefore, proper positioning could be applied as an independent nursing intervent ion for patients on Stroke in order to facilitate rehabilitation.

• 대한간호학회지
• /
• 제44권5호
• /
• pp.515-524
• /
• 2014

Purpose: The purpose of this study was to identify whether the couple perceived breast cancer as a traumatic event, to evaluate the association among posttraumatic growth, dyadic adjustment, and quality of life and to explore the predictors affecting quality of life of the couple. Methods: A cross-sectional comparative survey design was utilized. Participants were 57 couples recruited from a national cancer center in Korea. Data were analyzed using paired t-test, McNemar test and independent t-test. On the basis of variables found to be significantly associated with quality of life, multiple regression was used to examine the simultaneous influence of multiple predictors. Results: Breast cancers survivors and spouses perceived breast cancer as a traumatic event (43.9% and 24.6%, respectively). The global quality of life was explained by perception as trauma (${\beta}$= -19.79) and posttraumatic growth (${\beta}$=0.46) in survivors, and perception as trauma (${\beta}$= -18.81) and dyadic adjustment (${\beta}$=0.53) in spouses. Conclusion: Results suggest that future research should use qualitative methods to evaluate why contemplating reasons for cancer contributed to posttraumatic growth, examine other potential predictors of quality of life such as dyadic adjustment and intimacy, and identify links between posttraumatic growth and other psychological outcomes such as distress and well-being, using prospective analyses.

• 한국치위생학회지
• /
• 제10권5호
• /
• pp.797-805
• /
• 2010

Objectives : This study was application problem-based learning(PBL) of performance oral health manage in dental hygiene education. and evaluate on learning effect - learning attitude, student assessment(good or bed). Methods : For this study, we sampled 31 dental hygiene students composed of PBL group, Dept of Dental Hygiene, A college. The period of this study was 1 semester(from september, 2008 to December, 2008). To identify the effect of PBL on learning attitudes, student assessment, we used a t-test and compared pre & post effects of PBL using a paired t-test and General Linear Model(GLM), McNemar test. Results : The results of this study that problem based learning(PBL) for dental hygiene students education was more effective in learning process and effect of PBL rather than direct instruction. students assessment results that problem based learning improves their medicine knowledge and communication. Conclusions : This study suggest that PBL contribute to enhancing learning attitudes, learning effect and solve the real problems through self-directed learning.

• 보건행정학회지
• /
• 제20권3호
• /
• pp.157-172
• /
• 2010

This study was conducted to evaluate the effects of health-behavioral change for the elderly group after community based education of chronic diseases management. We measured self recognition of health status, medication administration of hypertension and diabetes, regular check for blood pressure and blood sugar level, recognition of body indicators (weight, hight, blood pressure, blood sugar etc), knowledge level for chronic diseases management and smoking and alcohol habitation before and after education of chronic diseases management for participants. The subjects of this study consist of 432 people with community-dwelling Seoul citizen being active churches. Education programs designed essential parts of fundamental chronic diseases management, physical exercises for health promotion, diet and nutrition etc. All data collection completed for 5 months from Aug. 2008 to Dec. 2008 by trained surveyors via interview survey. The data obtained were analyzed using descriptive statistics, Wilcoxon Singed Rank test, McNemar test and Paired t-test. The results showed that self recognition of health status, knowledge level for chronic diseases management, recognition of body indicators were statistically significantly increased after the education of chronic diseases management. Also, blood pressure were statistically significantly decreased in elderly with hypertension and blood sugar were statistically significantly decreased in elderly of high-risk group. Based on these results, it was suggested that preventive education policy of chronic diseases management should be considered with priority coming true for successful aging society.

• Investigative Magnetic Resonance Imaging
• /
• 제18권2호
• /
• pp.157-166
• /
• 2014

목적 : 고식적 견관절 MRI 검사에 사각시상면 영상 추가 시 극상건 파열의 진단적 정확도가 증가하는지 관절경 수술 소견을 대비표준으로 삼아 알아보고자 하였다. 대상 및 방법 : 2011년 1월부터 2012년 12월까지 본원에서 견관절 MRI 검사를 하고 관절경 수술을 받은 121명의 환자를 대상으로 하였다. 두 명의 영상의학과 의사가 독립적으로 관상사면과 시상사면 영상을 이용하여 극상건 파열을 평가하고 4주후 사각시상면 영상을 추가하여 다시 판독하였다. 관절경 수술을 대비표준으로 이용하였다. 건 파열 진단의 민감도와 특이도는 McNemar test로 비교하였고 관찰자 간, 기술 간 일치도는 카파계수로 평가하였다. 결과 : 사각시상면 추가 시 고식적 견관절 MRI만 이용하였을 때 보다 극상건 전층 파열 진단의 민감도가 증가하였고, 부분 파열 진단의 민감도, 특이도, 정확도 모두 증가하였지만 통계학적으로 유의한 차이는 없었다. 관찰자간 일치도는 사각시상면을 추가하거나 하지 않았을 때 모두 높은 일치도를 보였다. 영상 소견과 관절경 수술 소견은 사각시상면 추가 시와 추가하지 않았을 때 모두 중등도의 일치도를 보였다. 결론 : 극상건의 전층 및 부분 파열 평가를 위해 고식적 MRI에 사각시상면 영상을 추가 시 기존의 영상면 만으로 평가하였을 때와 진단적 정확도에 의미 있는 차이는 없었다.

• 대한방사선기술학회지:방사선기술과학
• /
• 제39권3호
• /
• pp.329-336
• /
• 2016

본 연구에서는 폐기종에 대해 고해상도 CT와 비교한 저선량 CT 의 유용성에 대해 평가하였다. 고해상도 CT와 저선량 CT 노출조건에서 선량과 영상 잡음을 3회 반복 측정하였다. 비슷한 노출조건에서 획득한 146명의 고해상도 CT와 저선량 CT 영상에 대해 2명의 흉부영상의학과전문의 합의 판독결과에서 폐기종 소견 만을 본 연구에 사용하였다. SPSS ver. 19.0 프로그램 사용하여 고해상도 CT와 저선량 CT 간에 폐기종에 대한 진단 차이는 McNemar's tests, 일치도는 unweighted kappa tests, 선량과 잡음 차이는 Mann-Whitney U-test 로 분석하였다. 선량은 고해상도 CT가 저선량 CT 보다 높았지만(1.95 mGy vs. 0.35 mGy, p=0.008), 잡음은 낮았다(40.1 HU vs. 99.6 HU, p=0.021). 폐기종 진단에 대해서는 두 영상 간에 높은 일치도를 보였다(k-value=0.88). 폐기종 점수는 두 영상 간에 통계적인 유의한 차이를 보이지 않았고, 높은 상관성을 보였다(r=0.599, p < 0.001). 선량과 잡음을 고려했을 때, 저선량 CT는 폐기종 진단에 표준 진단 방법 인 고해상도 CT를 대신하여 사용할 수 있을 것으로 사료된다.