• Title/Summary/Keyword: T-test analysis

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Accuracy Comparison of Blood Pressure among the Direct Measurement Method and Two Automatic Indirect Measurement Methods in the Patients with Various Blood Pressure (다양한 혈압상태에서 직접혈압을 기준으로 HP 자동혈압기와 국산자동혈압기의 정확도 비교)

  • Song Hyo-Sook;Jun Tae-Gook;Choi Eun-Jung;Kim Mi-Jung
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.8 no.3
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    • pp.366-378
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    • 2001
  • Objective: The purpose of this study was to identify differences in measurement methods for blood pressure (Direct measurement, HP automatic indirect measurement, and SE 7000 Korean made indirect measurement), and to evaluate the clinical trial of the Korean made automatic indirect blood pressure measurement. Material & Methods: From June, 1999 to February, 2000, fifty five consecutive patients were randomized into hypertension group (n=20), normotension group (n=20), and hypotension group (n= 15). Measuring blood pressure by indirect methods (HP NIBP M 1008B and SE 7000 NIBP Korean made) was done simultaneously in the same arm with arterial line for direct blood pressure measurement (HP M1006A). The procedures were repeated ten times at intervals of 2 minutes. Statistical analysis was Performed using SPSS (version 8.0 for windows) software package. Values were expressed as means and standard deviation and means were compared using t-test. Statistical significance was considered present with a p value less than 0.05. Results: In the hypertension group and noromotension group, the disparity between HP direct measurement and indirect SE 7000 NIBP did not show any differences compared to the disparity between HP direct measurement and indirect HP NIBP. In the hypotension group, the disparity in the diastolic pressure between HP direct measurement and indirect SE 7000 NIBP was significantly different compared to the disparity between HP direct measurement and indirect HP NIBP (p<0.001), however, disparities in systolic pressure did not showed any differences. Conclusion: Direct blood pressure measurement (HP M1006A) can be replaced with indirect blood pressure measurements (HP NIBP M 1008B & SE 7000 NIBP) in normotension and hypertension patients. Korean made indirect measurement was found to be more accurate compared to HP indirect measurement in hypotension Patients, but more study is needed.

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Knowledge and Practice of Middle East Respiratory Syndrome Isolation Precaution among Hospital Nurses (병원 간호사의 중동호흡기증후군 격리 지침에 대한 지식과 수행도)

  • Kim, Sunju;Song, Rhayun
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.25 no.1
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    • pp.46-57
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    • 2018
  • Purpose: The purposes of the study were to examine the knowledge and practice about Middle East Respiratory Syndrome (MERS) isolation precaution, and to explore influencing factors of the isolation practice among hospital nurses. Methods: A total of 182 nurses were recruited from four general hospitals where MERS patients had been treated. The knowledge and practice of MERS isolation precaution were measured by the scales developed based on the CDC guidelines. The collected data were analyzed by SPSS/WIN 22 with descriptive statistics, T-test, One-way ANOVA, Pearson correlation coefficients, and hierachical multiple regression analysis. Results: The nurses were 30 years old in average, and half of them had less than 5 years of clinical experience. and knowledge on droplet precautions (${\beta}=.171$, p=.019) were the significant predictors, explaining 19.6% of variance in the MERS isolation guideline practice. Clinical experience (${\beta}=.225$, p=.002), working at infection unit (${\beta}=-.203$, p=.011). Conclusion: The knowledge on droplet precaution and general knowledge on MERS were the important modifiable factor to improve the MERS isolation guideline practice among hospital nurses, even after adjusting clinical experience and demographic variables. It is necessary to develop an efficient education program on specific guidelines for prevention and management of infection by improving the knowledge on infectious disease such as MERS as well as droplet precaution which are modifiable factors.

Workplace Situation and Satisfaction Level of Dental Laboratory Technicians (치과기공사의 직업만족도에 대한 조사 연구 I (근무처에 대한 만족도))

  • Oh, Sae-Yoon;Kim, Ji-Hwan;Kim, Woong-Chul;Yu, Chin-Ho;Kim, Tae-Suk;Lee, Tae-Jung
    • Journal of Technologic Dentistry
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    • v.28 no.1
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    • pp.143-159
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    • 2006
  • Objectives; The purpose of the present study is to investigate workplace satisfaction level of dental technicians and the differences between that of dental lab owner's and that of employed dental technicians, who are working in dental laboratories. Methods; Samples were comprised of 137 dental technicians working in dental laboratories. Data were collected through self-administered questionnaires and analyzed to frequency distribution, correlation, t-test and multiple regression analysis. Results; 1) Dental technicians generally are 'somewhat or a bit satisfied' with their workplace situations, regardless of position, sex, and individual career. 2) Mean values of 4 items out of 11 work situation factors of employed dental technicians were significantly lower than those of lab owner's. The 4 items are the openness of management, working environment, pay, and policy in promotion and raise. They would be sources of dissatisfaction and conflict. 3) Level of satisfaction was significantly correlated with 2 subordinate variables, i.e. working conditions and administration policy. There is a tendency that administration policy is a bit more important for lab owners, while working conditions are a bit more important for employed dental technicians. Conclusion; The employer-employee relationship of dental technicians seems to be sound, as no signs of troublesome problem is detected. But the discrepancy revealed in the above results is telling that there certainly exist some disagreement in the viewpoints of the two groups. It is necessary for the dental technicians to find ways to deal with the possible triggers of discord and discontent.

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Correlation study of the oral health knowledge, attitude and behavior in the high grade students of elementary school in some regions of the metropolitan (수도권 일부 초등학교 고학년 학생의 구강보건에 관한 지식과 태도, 행동의 상관성 연구)

  • Kim, Seok-Hwan;Kim, Jae-Hong;Kim, Ji-Hwan
    • Journal of Technologic Dentistry
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    • v.33 no.4
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    • pp.495-503
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    • 2011
  • Purpose: The purpose of this study was to obtain data that can be utilized in the planning of oral health education plan, by surveying the correlation between oral health knowledge, attitude, and behavior among high grade students elementary school in some regions of the metropolitan. Methods: The subject of this study through the survey of the recognition of the oral health, a questionnaire survey was conducted for 548 male and female students who were in the 4th, 5th, 6th grade of elementary school in some regions of the metropolitan. Statistical analysis was conducted using the SPSS 12.0 with t-test, ANOVA, and correlation. Results: Knowledge of oral health was very high. Correct attitudes and positive behavior were indicated. There was a significant difference in oral health knowledge according to school year and parents' dental condition(P<.05). The student one recording oral health behavior degree where the oral health knowledge is high appears highly, considers statistically the difference which it was visible. Positive correlation was significantly observed among oral health knowledge, attitudes, and behavior. Especially, attitudes and toothbrush method were highly correlated(r=.853). Conclusion: Oral health program through the elementary school students and their parents for the development of proper oral health care education programs continue to be made should be considered.

The research on the Career Plan of the Dental Technology Students (Revolve Around D College Students) (치기공과 재학생의 진로계획에 관한 실태 조사 - D대학 학생을 중심으로 -)

  • Bae, Bong-Jin;Lee, Hwa-Sik
    • Journal of Technologic Dentistry
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    • v.33 no.4
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    • pp.479-493
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    • 2011
  • Purpose: The career education of the college student needs a new awareness. This research provides fundamental data from analyzing necessities of student's career education according to plans of a career education. Methods: Make use of SAS 8.0 of windows and descriptive statistics analysis on investigate Dental Technology 570 students in Daegu. And also it analyzes difference of ispectable t-test and ANOVA. Results: According to a gender, a job experience, where they are come from, there is a meaningful difference of an information and an entrance motive for choosing a major (<.05). The time of choosing the major are different meaningfully (<.001). An awareness about the method of a career achievement is a meaningful difference between men and women(<.05). As getting old, the method of a career achievement is higher and there are meaningful differences according to a grade, job experience and a entrance screening(<.01). In accordance with a gender, a grade, entrance screening, there are meaningful differences of a degree for obtaining the career information activities(<.01). In accordance with an age, when they choose a major, there is a difference(<.001). In accordance with a gender and a age, there are meaningful differences of a career plan(<.001). The age difference is slight. In accordance with a gender and a age, there are meaningful differences how to effort for the career(<.001), and also according to an entrance screening, an entrance motive(<.05). These mean that the first priority for choosing the career and going into the world is a school record. There are meaningful differences of people that the student choose for consulting the career(<.01). According to the job experience there are meaningful differences(<.001). Conclusion: By investigating and analysing the student's career plan, we need to seek how students choose their career reasonably and desirably. And also we need to teach a career education systematically.

A Study of the Cognition and the Requirement on the Key Competency of Dental Technology (치과기공분야에서의 직업기초능력수준과 요구도에 관한 연구)

  • Hwang, Jae Sun
    • Journal of Technologic Dentistry
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    • v.34 no.4
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    • pp.457-469
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    • 2012
  • Purpose: The purpose of this study is analyzing how much students of dental technology possess core competencies and cognition between dental technicians and students. Methods: The subjects of this study were dental technicians, dental technology students and a self-administered structured questionnaire survey wax conducted for 428 selected people. Collected data were analyzed using SPSS Win 20.0 statistics program and analysis techniques include the frequency, t-test, One-way ANOVA. Results: The results of the survey are as follows. The cognition of key competency according to the gender in the students showed differences in interpersonal ability, information ability and the requirement of key competency according to the gender in the students showed differences in speaking ability, listening ability, problem solving ability. The cognition of key competency according to the grade in the students showed difference in speaking ability, listening ability and the requirement of key competency according to the grade in the students showed difference in comprehension of organization ability. The speaking ability is the lowest in the cognition of key competency according to the gender, grade, experience of clinical training in the students and the skill ability is the highest in the requirement of key competency according to the gender, experience of clinical training in the students. The cognition of key competency according to the career in the dental technicians showed difference in problem solving ability, self-regulation and self-development ability, skill ability and the requirement of key competency according to the career in the dental technicians showed difference in writing ability. The cognition of key competency according to the educational background in the dental technicians showed difference in comprehension of organization ability. The foreign language ability is the lowest in the cognition of key competency according to the career, job in the dental technicians and the skill ability is the highest and the math ability is th lowest in the requirement of key competency according to the career, place of employment in the dental technician. Conclusion: This study can be used as basic data for dental technology that are available not only to field-oriented disciplines but also to overall higher education fields which aim to strengthen key competency.

Comparison of Body Composition, Physical Fitness, Isokinetic Strength between a major in EMT Students and a major in Physical Education Students (응급구조 전공과 체육 전공학생의 신체구성, 체력 및 슬관절 등속성 근기능 비교 연구 - 대전·충남을 중심으로 -)

  • Cho, Byung-Jun;Kim, Hak-Soo
    • The Korean Journal of Emergency Medical Services
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    • v.9 no.2
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    • pp.129-136
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    • 2005
  • The purpose of this study was to compare the level of physical fitness and isokinetic strength, between EMT student and physical education students. Nine a major in EMT student volunteers, and nine a major in physical education student volunteers participated in that study as subjects. The basic physical body composition, fitness and isokinetic strength were measured. The data obtained in the study was analyzed by SPSS PC+ for window version 10.0. The difference in the mean of each variable between the two groups was analyzed by using the independent t-test and the significance level for all analysis was set at <.05. The results were as follows ; 1. There was a significant difference in the basic physical fitness between the two groups with the exception flexibility. The difference showed the statistical significance on back strength, balance and power in physical education students. 2. There were significant difference in body composition between the two groups with the exception of lean body fat. The difference showed the statistical significance on body fat%, body fat mass in the physical education students. 3. There was significant defference in the isokinetic strength between the two group. The difference showed the statistical significance on peak torque, peak torque B/W%. It was concluded that the physical education students may not have an effect of flexibility; however, back strength, balance, power, body composition, isokinetic strength, could be enhanced due to the long-term period of training. Based on the findings of this study, the regular participation of regular exercise help the untrained men achieve health-related fitness.

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Thermal Environment Transition of Response Climate Change and Heat Wave Application Evaporative Cooling System (기후변화 및 폭염대응 증발냉각시스템 적용에 따른 내·외부 열환경 변화 연구)

  • Kim, Jeong-Ho;Kim, Hak-Gi;Yoon, Yong-Han;Kwon, Ki-Uk
    • Journal of Environmental Science International
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    • v.25 no.9
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    • pp.1269-1281
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    • 2016
  • This study evaporative cooling system a heat wave climate change and reduction of the inside and outside thermal environment change research. Measurement items included micro meteorological phenomena and measured comfort indices. A micro meteorograph of temperature, relative humidity, surface temperature, and the comfort indices of WBGT, UTCI, and PMV were measured. The difference in inside and outside temperatures were compared for different land types, with the largest difference found in Type A ($4.81^{\circ}C$), followed by Type B ($4.40^{\circ}C$) and Type C ($3.12^{\circ}C$). Relative humidity was about 10.43% higher inside due to water injection by the evaporative cooling system. Surface temperature was inside about $6.60^{\circ}C$ higher than the outside all types. WBGT were Type A ($3.50^{\circ}C$) > Type B ($2.71^{\circ}C$) > Type C ($1.88^{\circ}C$). UTCI was low heat stress inside than outside all types. PMV was analysed Type C for inside predicted percentage of dissatisfied 75%, other types was percentage of dissatisfied 100% by inside and outside. Correlation analysis between land cover type and temperature, surface temperature, pmv, utci. T-test analysed inside and outside temperature difference was significant in all types of land.

Subjective awareness characteristics, knowledge and behavior of oral health among some university students (일부 대학생의 주관적 구강건강 인지특성과 구강보건지식 및 행태관련 조사)

  • Shin, Ah Ra;Kim, Ji-Hye;Park, Dong-Ok;Choi, Youn-Hee;Song, Keun-Bae
    • Korean Journal of Health Education and Promotion
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    • v.33 no.1
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    • pp.41-48
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    • 2016
  • Objectives: This study is aimed to evaluate oral health knowledge and behavior according to subjective awareness characteristics of oral health in university student. Methods: The data was collected from June, 2015 in K university, Korea. It was investigated about subjective awareness characteristics, knowledge and behavior of oral health by questionnaires in university students. The data was analysis into t-test and one-way ANOVA by SPSS 22.0. Results: Subjects who responded that they had a problem with oral health in subjective awareness characteristics were a statistically significant differences according to gender. Subjects who were interested of oral health and responded to their subjective oral health state as good condition were higher than the others in oral health knowledge. According to subjective awareness characteristics of oral health, the oral health behaviors were a statistically significant differences. Conclusions: There were statistically significant differences in oral health knowledge and behavior according to subjective awareness characteristics of oral health.

Effects of sleep quality and occupational stress on health-related quality of life among a university's security workers (일개 대학 경비근로자의 수면의 질과 직무스트레스가 건강관련 삶의 질에 미치는 영향)

  • Park, Gun Woo;Goh, Su-Jin;Kim, Dong Ha;Kim, Hye Lim;Park, Jin Kwan;Yu, Soo-Young;Jeong, Du Young;Chun, Jin-Hee;Hwang, Soon-Young;Cho, Sung-Il
    • Korean Journal of Health Education and Promotion
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    • v.32 no.3
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    • pp.73-83
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    • 2015
  • Objectives: The purpose of this study was to identify the effects of sleep quality and occupational stress on health-related quality of life among a university's security workers. Methods: 128 security workers voluntarily participated in the study. The survey asked demographic, health related, job related factors, the Korean Occupational Stress Scale Short Form(KOSS-SF), sleep quality questionnaire, and 12-Short Form Health Survey version 2.0(SF-12v2). The data were analyzed by using descriptive analysis, t-test, ANOVA, multiple linear regression, and multiple logistic regression. Results: The interrupted rest time was significantly negatively related to occupational stress. The occupational stress significantly affected sleep quality. The significant variable affecting Physical Component Score(PCS) and Mental Component Score(MCS) was sleep quality and occupational stress, respectively. Conclusions: HRQOL was founded to be affected by occupational stress and sleep disorder among the security workers. Based on this study, we suggest that the management of both occupational stress and sleep quality is crucial to improve the HRQOL.