• Title/Summary/Keyword: Two-sample T-test

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Health Status of Elderly Persons in Korea (한국노인의 건강상태에 대한 조사연구)

  • 최영희;김문실;변영순;원종순
    • Journal of Korean Academy of Nursing
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    • v.20 no.3
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    • pp.307-323
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    • 1990
  • This Study was done to design and test an instrument to measure the health status of the elderly including physical, psychologyical and social dimensions. Data collection was done from July 18 to August 17, 1990. Subjects were 412 older persons in Korea. A convenience sample was used but the place of residence was stratified into large, medium and small city and rural areas. Participants located in Sudaemun-Gu, Mapo-Gu, and Kangnam-Gu, Seoul were interviewed by brained nursing students, and those in Chungju, Jonju, Chuncheon, and Jinju by professors of nursing colleges. Rural residents were interviewed by community health practioners working in Kungsang-Buk-Do, Kyngsang- Nam - Bo, Jonla Buk -Do, and Kyung Ki- Do. The tool developed for this study was a structured questionnaire based on previous literature and then tested for reliability and validity. This tool contained 20 physical health status items, 17 mental-emotional health status items and 38 social health status items. Physical health status items clustered in to six factors such as personal hygiene, activity, home management, digestive, sexual, sensory, and climination functions. Mental-emotional health status items clustered into two factors, mental health and emotional health. Social health status items clustered into seven factors, grandparent, parent, spouse, friend, kinships, group member and religious role functions. Data analysis included percentage, average, S.D., t-test and ANOVA. The results of the analysis were as follows : 1. The tool measuring the health status of the elderly and developed for this research had a relatively high reliavility indicated by a cronbach=0.97793. 2. Average score of the subjects physical health status was 4, 054 in a 5 point likert scale, mentalemotional health status was 3.803, social health status was 2.939 and the total average was 3.521. The social status of the subjects was the lowest and the next was mental-emotional health status ; physical health status was the highest. 3. Educational background, perceived health status, the amount of pocket money were related to physical and mental-emotional health status and family structure was related mental-emotional physical and social health status. Occupation was related to physical and mental-emotional status. Area of residence was related to metal-emotional and social status. Source of living in the expeneses was related to physical and mental-emotional health status marital status to mental-emotional and social health status, and the number living in the home physical health status and religion to social health status. The following conciusions were derived from the above results ; 1. The health status of Korean elderly was relatively sound but social health status was the most vulnerable. The Social activity for Korean elderly is needed to improve social health. 2. Educational background, perceived health status and the amount of pocket money must be considered in the health assessment criteria of the elderly, Family structure, marial status, occupation, residence variables and sources of living expense must also be considered as significant. 3. A health education program based on the educational background of the elderly, and provision of an occupational socioeconomic welfare policy will be useful in order to increase social health status of Korean elderly.

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A Study on the Perception of the Importance and Performance of Patient Education of the Clinical Nurses (종합병원 간호사가 인식하는 환자교육 중요도와 수행도의 관계연구)

  • Yoo, Eun-Kyung;Suh, Moon-Ja
    • The Journal of Korean Academic Society of Nursing Education
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    • v.6 no.2
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    • pp.287-302
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    • 2000
  • The purpose of the study are to examine the perception of the importance and performance of patient education of the clinical nurse and find out the interfering factors in practicing patient education. The data were collected from convenient sample of 256 clinical nurses working in the nursing units of adult patients except the psychiatric unit, obstetric unit, dental surgical unit and intensive care unit of one University Hospital in Seoul from September 29 to October 2, 1998. Three measurement tools of self-report- questionnaires developed by researcher used. For the content validity of the questionnaires, two sessions of panel discussion and a pilot test were done and finally factor analysis was done with Varimax method. Analysis of data was done with SAS program using frequency, percentage, means, standard deviation, Pearson's Correlation Coefficients, t-test and ANOVA. The obtained results were as follows : 1. The surveyed nurses perceived the importance of patient education at higher level with mean score of 4.08 among 5 point than their perception of practice( mean score : 3.42). 2. There was positive significant correlation(r=.29, p=0.0001)between nurses' perception of the importance of patient education and it's practice 3. Among the teaching contents for patients, 'information of diagnostic procedure and operation' and 'orientation of hospitalization' were perceived most important. And 'preparation for discharge' and 'understanding of disease and health promotion' were perceived least important 4. Among the teaching contents for patients, 'orientation of hospitalization' and 'information of diagnostic procedure and operation' were perceived highly performable. And 'understanding of disease and health promotion' and 'preparation for discharge' were perceived least performable. 5. Three types of interfering factors were identified as patient-factor, situational factor, nurse-factor. The mean degree of impediment with the interfering factors was at average level(3.09 among 5). The patient and situational factors of impediments were more interfering than nurse- factor for teaching patients. 6. In older age(p<.05), married state (p<.05), higher educational status (p<.01), higher clinical experience (p<.01) and higher position(p<.01), the score of perceived importance of patients education was more high. 7. In older age(p<.01), higher clinical experience(p<.001) and surgical unit (p<.01), the score of perceived performance of patients education was more high. In conclusion, in order to activate patient education practice in the clinical setting, the continuing education for patients education should be more emphasized and the effective teaching methods and materials should be developed to help patient teaching. And an organizational support such as budgeting for patient education and reimbursement system should be administrated.

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A Correlation Study on the Relationship between Hardiness and Compliance with Prenatal Care in Pregnant Woman (임부의 강인성과 산전간호이행과의 관계연구)

  • 박명희
    • Journal of Korean Academy of Nursing
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    • v.23 no.3
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    • pp.339-355
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    • 1993
  • The purpose of this correlational study was to offer strategies for nursing intervention to improve compliance with prenatal care. This study was designed to investigate degree of tardiness, correlation between hardiness and compliance with prenatal care. In research, the characteristic of hardiness has 1 teen demonstrated in resolving stressful situaltions and in adapting to overcome physical and psycho-logical tension. pregnancy is normal crisis process. Therefore, it is necessary to investigate degree of hardiness in normal pregnant woman and I think that concept of hardiness is able to become a new, important concept for prenatal care imtervention. The subjects were 388 normal pregnant woman over five months, who were selected from five university hospitals and two health centers in Taegu. Data were obtained using a convenience sample technique. Data collection was done from March 6 to June 18, 1992. The instruments used for this study were the Health Related Hardiness Scale developed by Pollock(1984) and compliance with a prenatal care scale developed by the author on the basis of results of a literature review. Data were analyzed using the SAS program for t - test, ANOVA, Scheffe test, Pearson correlation and stepwise multiple regression. The results are as follows : 1. The scores on the hardiness scale ranged from 35 to 210 with mean of 88.89. 2. The scores on the compliance with prenatal care scale ranged from 28 to 140 with a mean of 111.49. 3. There were significant differences between hardiness and obstetrical characteristic factors, duration of pregnancy, frequency of pregnancy, frequency of abortion(P .05). 4. There were significant differences between compliance with prenatal care and general and obstetircal characteristic factors, education and frequency of pregnancy(P .05). 5. Correlations between hardiness and compliance with prenatal care were all negative and significant(r=-.2276~ -.2930, P .000). Challenge of hardiness components was the low est (r= -.2814). 6. Significant differences between hardiness and compliance with prenatal care by group were as follows : Group 1 was the high est, whereas Group 8 was the lowest(F=5.47, P .0000). 7. Factors influencing compliance with prenatal care were : 1) Challenge was the main variable and accounted for 7.92% of the total variance. 2) Education and frequency of pregnancy accounted for an additional 2.74% of the total variance. From the above findings, this study suggests the following : 1) Considering the lack of empirical support, the theroy of hardiness needs to be evaluated. 2) A valid, reliable and culturally appropriate instrument needs to be developed for Health Related Hardiness Scale. 3) There is a need for further study of hardiness in a broad variety of populations. 4) There is a need for comparative study correlation between hardiness and compliance with prenatal care in woman with normal and abnormal pregnancies

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Association between Type D Personality and the Somatic Symptom Complaints in Depressive Patients (우울증 환자에서 D형 인격과 신체 증상 호소와의 관련성)

  • Park, Wu-Ri;Jeong, Seong-Hoon
    • Korean Journal of Psychosomatic Medicine
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    • v.21 no.1
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    • pp.18-26
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    • 2013
  • Objectives : Type D personality was originally introduced to study the role of personality in predicting outcomes of heart disease. However, researches showed that other medical conditions are also affected by this personality. The purpose of this study was to evaluate the relationship between type D personality and somatic symptom complaints in depressive patients. Methods : Eighty-two individuals diagnosed with depressive disorder were included. Type D personality was measured with DS14. Patient Health Questionnaire(PHQ) 9 and 15 were used to measure depression severity and somatization tendencies. For alexithymia, TAS-20 was used. Student T-test and linear regression analysis were performed. The best regression model was determined by stepwise variable selection. Results : More than half of the subjects(56%) complained at least medium degree somatic symptoms according to PHQ-15 criteria. Two-thirds of the subjects were classified as Type D personality(63.4%). The mean PHQ-15 score of the Type D individuals was significantly higher than the remaining subjects(PHQ-15 mean=12.7, $p=8.2{\times}10^{-7}$). The best regression model included age, PHQ-9 score and NA subscale score as predictor variables. Among these, only the coefficients of age($p=1.5{\times}10^{-3}$) and NA score($p=1.5{\times}10^{-7}$) were found to be statistically significant. Conclusions : The result showed that Type D personality was one of the strong predictors of somatic complaints among depressive individuals. The finding that negative affectivity rather than social inhibition was more closely associated with somatization tendencies does not fully agree with the traditional explanation that inability to express negative emotion predispose the individuals to somatic symptoms. The finding that alexithymia was not shown to be a significant predictors also substantiated this discrepancy. However, it might be possible that the high correlation between NA and SI subscore(r=0.65) and between NA and TAS-20 score(r=0.44) hid the additional effects of social inhibition and alexithymia. Further research with a larger sample would be needed to investigate the effects of the latter two components over and above the effect of negative affectivity on the somatic complaints in depressive patients.

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The Effect of Teacher Support Program for the Integration of Handicapped Children on Teaching Efficacy of Daycare Center Teachers (장애 유아 통합보육을 위한 교사 지원이 어린이집 교사의 교사 효능감에 미치는 영향)

  • Park, Na Ri
    • Korean Journal of Child Education & Care
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    • v.18 no.4
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    • pp.247-265
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    • 2018
  • Objective: The purpose of this study was to investigate the effect of teacher support program for integration of handicapped children on teaching efficacy of daycare center teachers. Methods: In the study, 12 day care teachers in 4 day care centers in Seoul and Gyeonggi area were selected as experimental groups and 12 teachers in 5 day care centers were selected as control group. Teacher education is carried out through group education, such as understanding of developmental area, curriculum modification, activity-based embedded intervention, cooperative learning, direct teaching, disability understanding education, behavior support, family support. Individual teacher education provided counseling on the reality of child care for children with disabilities that reflects the needs of teachers for integrated child care for handicapped children. Teacher's Efficacy in Inclusive Practices (TEIP) was used as a pre post test to measure teacher's efficacy change. In order to analyze the results of the study, two independent sample t tests were conducted on the difference between pre-post test of teacher efficacy between the two groups. Results: As a result, There was a significant difference in the pre-post change of teacher efficacy between the two groups. Conclusion/Implications: The results of this study are as follows, teacher support program provided immediate feedback in integrated child daycare center for the handicapped children, child care teachers improved their integrated handicapped children care expertise, provided responsive teacher support program to the actual needs of the site, teacher support program reflected various variables related to integration, and emphasized the cooperative relationship between researcher and child daycare center teacher. The results of this study can be used as actual data of field where lack of support for the integration of handicapped children is lacking.

Differences in Dietary Life and Health related Factors According to Obesity in Poor Urban Peruvian Adolescents (페루 도시 빈민지역 청소년의 비만에 따른 식생활 및 건강요인의 차이)

  • Chung, Hye-Kyung;Lee, Hae-Young;Kim, Jin Ri;Nam, Eun Woo
    • Korean Journal of Community Nutrition
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    • v.23 no.4
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    • pp.302-318
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    • 2018
  • Objectives: This study examined the differences in dietary life and health related factors, such as drinking behavior, exercise and leisure activities, mental health, and subjective perception for oneself according to obesity in poor urban Peruvian adolescents. Methods: A total of 1,532 Peruvian adolescents were selected from six schools in poor regions using stratified random sampling. The subjects were classified into two groups based on their BMI: 'normal weight group (NW group=980)' or 'overweight and obese group (OWOB group=293)'. The differences in the general characteristics, dietary life, drinking behavior, physical activity and leisure, mental health and subjective perception of oneself in the two groups were compared. ${\chi}^2$ analysis and independent sample t-test were performed using the SPSS program ver. 24. Results: For the total and male students, the frequency of breakfast and dinner were significantly lower in the OWOB group than in the NW group (all p<0.001). For total and female students, the percentage of subjects who received nutrition education was significantly higher in the OWOB group than in the NW group (all p<0.05). For total students, the percentage of subject who exercised more than five days/week was lower in the OWOB group than in the NW group (p<0.05). For the total and female students, the subjective health status was worse in the OWOB group than in the NW group (all p<0.05). The subjective body image was significantly different between the OWOB group and NW group in the total, male and female subjects (all p<0.001). Conclusions: The frequency of meals and exercise, and the subjective perceptions of the health status and body image differed according to obesity in poor urban Peruvian adolescents. Therefore, a school-based intervention program focused on regular meal and exercise, and adequate subjective perceptions for health status and body image need to be developed to prevent adolescent obesity.

A comparative study of the deviation of the menton on posteroanterior cephalograms and three-dimensional computed tomography

  • Lee, Hee Jin;Lee, Sungeun;Lee, Eun Joo;Song, In Ja;Kang, Byung-Cheol;Lee, Jae-Seo;Lim, Hoi-Jeong;Yoon, Suk-Ja
    • Imaging Science in Dentistry
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    • v.46 no.1
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    • pp.33-38
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    • 2016
  • Purpose: Facial asymmetry has been measured by the severity of deviation of the menton (Me) on posteroanterior (PA) cephalograms and three-dimensional (3D) computed tomography (CT). This study aimed to compare PA cephalograms and 3D CT regarding the severity of Me deviation and the direction of the Me. Materials and Methods: PA cephalograms and 3D CT images of 35 patients who underwent orthognathic surgery (19 males and 16 females, with an average age of $22.1{\pm}3.3years$) were retrospectively reviewed in this study. By measuring the distance and direction of the Me from the midfacial reference line and the midsagittal plane in the cephalograms and 3D CT, respectively, the x-coordinates ($x_1$ and $x_2$) of the Me were obtained in each image. The difference between the x-coordinates was calculated and statistical analysis was performed to compare the severity of Me deviation and the direction of the Me in the two imaging modalities. Results: A statistically significant difference in the severity of Me deviation was found between the two imaging modalities (${\Delta}x=2.45{\pm}2.03mm$, p<0.05) using the one-sample t-test. Statistically significant agreement was observed in the presence of deviation (k=0.64, p<0.05) and in the severity of Me deviation (k=0.27, p<0.05). A difference in the direction of the Me was detected in three patients (8.6%). The severity of the Me deviation was found to vary according to the imaging modality in 16 patients (45.7%). Conclusion: The measurement of Me deviation may be different between PA cephalograms and 3D CT in some patients.

A Study on Analyzing Sentiments on Movie Reviews by Multi-Level Sentiment Classifier (영화 리뷰 감성분석을 위한 텍스트 마이닝 기반 감성 분류기 구축)

  • Kim, Yuyoung;Song, Min
    • Journal of Intelligence and Information Systems
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    • v.22 no.3
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    • pp.71-89
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    • 2016
  • Sentiment analysis is used for identifying emotions or sentiments embedded in the user generated data such as customer reviews from blogs, social network services, and so on. Various research fields such as computer science and business management can take advantage of this feature to analyze customer-generated opinions. In previous studies, the star rating of a review is regarded as the same as sentiment embedded in the text. However, it does not always correspond to the sentiment polarity. Due to this supposition, previous studies have some limitations in their accuracy. To solve this issue, the present study uses a supervised sentiment classification model to measure a more accurate sentiment polarity. This study aims to propose an advanced sentiment classifier and to discover the correlation between movie reviews and box-office success. The advanced sentiment classifier is based on two supervised machine learning techniques, the Support Vector Machines (SVM) and Feedforward Neural Network (FNN). The sentiment scores of the movie reviews are measured by the sentiment classifier and are analyzed by statistical correlations between movie reviews and box-office success. Movie reviews are collected along with a star-rate. The dataset used in this study consists of 1,258,538 reviews from 175 films gathered from Naver Movie website (movie.naver.com). The results show that the proposed sentiment classifier outperforms Naive Bayes (NB) classifier as its accuracy is about 6% higher than NB. Furthermore, the results indicate that there are positive correlations between the star-rate and the number of audiences, which can be regarded as the box-office success of a movie. The study also shows that there is the mild, positive correlation between the sentiment scores estimated by the classifier and the number of audiences. To verify the applicability of the sentiment scores, an independent sample t-test was conducted. For this, the movies were divided into two groups using the average of sentiment scores. The two groups are significantly different in terms of the star-rated scores.

Cafeteria Users' Preference for an Indoor Green-wall in a University Dining Hall (실내 벽면녹화 공간 이용자 행태연구 - 대학구내식당 녹화 칸막이 선호를 중심으로 -)

  • Kim, Hae-Ryung;Ahn, Tong-Mahn
    • Journal of the Korean Institute of Landscape Architecture
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    • v.43 no.6
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    • pp.62-72
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    • 2015
  • The objective of this research is to investigate the different aspects in which users positively identify with indoor green walls and the influences that it has on usage behaviors. Under the hypothesis that public space users prefer locations with green walls, the effect on their behavior was observed. After installing indoor green walls, behavioral observations and questionnaires were carried out to analyze green wall preferences. The observation experiment was carried out for a total of 8 days in order to see what influences the preferences for of indoor green walls had on usage behaviors and compare a control group with an experimental group that experienced a green wall. The usage time data were put into an SPSS statistics program and used to run an independent sample t-test. The questionnaire was carried out for two days from March 1st to 2nd 2014 after the observation was completed, and was done by 224 users of the two areas. The results from the experiment are as follows. First, comparisons between the total usage time of seats adjoined to partitions in both the green walled area and the partitioned area showed that there was no preference for indoor green walls. Second, the results appeared to show a higher percentage of women users in the green walled area, compared to the original partitioned area. Third, it showed that partitions and plants did not have any influence on seat choices. Fourth, the questionnaire showed preferences for indoor green walls. Out of the 94 people who sat in the partitioned area, 11.7% answered that they wanted to sit in the green walled area, they couldn't due to the lack of available seats. Furthermore, out of the 130 people who sat in the green walled area, 24.6% said they chose the seat because of their preference for the green wall. Although 64.3% of users of the two areas said that they would choose the green walled area if under the same circumstances, the behavior observation did not reflect this.

The Influence of High School Students' Entrance Exam Stress on Their Mental Health (대입 준비생의 입시스트레스가 정신건강에 미치는 영향)

  • Lee, Hee-Ja;Park, Yung-Soo
    • The Journal of Korean Society for School & Community Health Education
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    • v.8 no.1
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    • pp.43-54
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    • 2007
  • This study aimed at investigating the level of high school students' entrance exam stress and mental health first and also investigating if the entrance exam stress and mental health are related to gender, grade, character type, parenting style and economic status. This is expected to be used as a fundamental data for the development of health education program on high school students' stress and diagnosis of their mental health. To achieve those goals above, the questionnaire was used and the sample consisted of 600 students from general high schools in a large city, C and in a smaller city, A in Chungnam province through questionnaire and the conclusion, which was based on 582 proper questionnaires from the 600 questionnaires, through variable analysis, correlation analysis and multi-regression, is below. First, according to the information provided by respondents, the result showed the relationship between those background variables and the entrance exam stress and mental health level. As the students are more introverted and the parenting style is more authoritative, the entrance exam stress is higher and the mental health level is higher as the parenting style is more authoritative and the economic status is lower. In gender, the entrance exam stress level was high for male students in regard to parents pressure. For female students, it was due to the insufficient free time. In test performance, the good grade group showed high stress level when they don't have enough free time and the poor grade group showed high stress level when they have test tension and poor test performance. In character style, the introverted group showed high stress level in future uncertainty. In parenting style, the authoritative group showed significantly high level in all four sub-factors and there is no significant relationship with the stress level and economic statue. Female students reported higher mental health level than male students in somatization and depression. In academic achievement, the poor grade group showed high level in obsession, fear-anxiety and psychotism. In character style, the introverted group showed high level in sensitivity towards others and depression. And in parenting style, the authoritative group is higher in 9 sub-factors than the other two groups in the factor, economic status. The lower economic status group showed high mental health problem level in this order; in obsession, sensitivity towards others, depression, paranonia and psychotism. Second, the results revealed that there is a significant difference among the groups after comparing and analyzing the relationship between the mental health level according to the three groups, the first, second and third group divided by the degree of entrance exam stress. And the higher the entrance exam stress is, the higher the mental health problem level is. Verification showed that there was obvious difference among the groups. the entrance exam stress was positively correlated with the mental health level. The lack of free time, future uncertainty, test anxiety/poor test performance and parents pressure, these factors, in that order, were correlated with the mental health level. when the prediction variables which influenced on mental health are analyzed, test-anxiety/poor test performance was found to be related to mental health most. And after the factor, test-anxiety, future uncertainty and the lack of free time were listed(ranked), however results did not show any correlation with parents' pressure.

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