• Title/Summary/Keyword: Sampling variance

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Marked Corridor 20 Meters Brief Walking Aerobic Exercise Improves the Quality of Life and Functional Capability of Stroke Survivor Outpatients in Tertiary Hospitals in Osogbo, Nigeria

  • Ojo, Israel Arogundade;Dominic, Olufunmilola Leah;Adeyemi, Wale Johnson
    • Journal of the Korean Society of Physical Medicine
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    • v.17 no.2
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    • pp.41-51
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    • 2022
  • PURPOSE: The functional limitations in stroke survivors promote sedentary lifestyles and quality of life inadequacies, but there is increasing evidence that this could be minimized by physical exercise. Therefore, this study examined the effects of physical exercise on the quality of life (QoL) and functional capacity (ability to stand up from a sitting position) among stroke survivors drafted from two tertiary hospitals in Osogbo, Nigeria. METHODS: A purposive sampling technique was used to select 21 registered right or left outpatient hemiplegic stroke survivors in a pre- and post-test experimental research design. The research questions were presented using descriptive statistics of frequency, percentage, mean and standard deviation, while an Analysis of Variance (ANOVA) was used to test the study hypothesis at the .05 alpha level for significance. RESULTS: Compared to the baseline (week 0), there were significant increases in the general quality of life, healthy well-being, physical exercise, pain perception, and environmental domains of QOL among the survivors in week four. Moreover, a significant increase was observed in these indices in week eight, compared to week four, except for the pain perception domain. Compared to the baseline, there was a significant decrease in the time it took the stroke survivors to stand up from a sitting position in week four. A significant decrease was observed in this index in week eight compared to week four. CONCLUSION: Marked corridor 20 meters brief walking exercise for eight weeks significantly improved the quality of life and ability to stand up from a sitting position in stroke survivors in Osogbo, Nigeria.

Effects of a virtual reality simulation integrated with problem-based learning on nursing students' critical thinking ability, problem solving ability, and self-efficacy: a non-randomized trial (문제중심학습 기반 가상현실 시뮬레이션 교육이 간호대학생의 비판적 사고능력, 문제해결능력 및 자기효능감에 미치는 효과: 유사실험 연구)

  • Young A Song;Minkyeong Kim
    • Women's Health Nursing
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    • v.29 no.3
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    • pp.229-238
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    • 2023
  • Purpose: This study analyzed the effects of virtual reality simulation-based problem-based learning on nursing students' critical thinking ability, problem-solving ability, and self-efficacy in the nursing care of women undergoing induction of labor. Methods: A nonequivalent control group pretest and posttest design was employed. The study participants included 52 nursing students (24 in the experimental group and 28 in the control group). The experimental group took a problem-based learning (PBL) class in the first week, and then engaged in self-directed learning using virtual reality simulation. In the second week, lectures about emergency nursing care for induction of labor and drug administration were given. The control group participated in PBL in the first week and lectures in the second week. The study was conducted from April 17 to May 19, 2023. Data were analyzed using the chi-square test, Fisher exact test, analysis of variance, and the independent t-test. Results: Before-and-after differences between the two groups were statistically significant in problem solving ability (t=-5.47, p<.001) and self-efficacy (t=-5.87, p<.001). Critical thinking ability did not show a statistically significant difference between the two groups. The score for satisfaction with the virtual reality simulation program was 3.64±5.88 out of 5 in the experimental group. Conclusion: PBL education using a virtual reality simulation was found to be an effective way of teaching. Although convenience sampling was used, PBL education using virtual reality can be used as an educational strategy to enhance nursing students' problem-solving ability and self-efficacy.

Assessment of Questionnaire of Physical Activity at Workplace Based on the Social Cognitive Theory (PAWPQ-SCT): A Psychometric Study in Iranian Gas Refinery Workers

  • Kamel Ghobadi;AhmadAli Eslami;Asiyeh Pirzadeh;Seyed Mohammad Mazloomi;Fatemeh Hosseini
    • Safety and Health at Work
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    • v.14 no.4
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    • pp.358-367
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    • 2023
  • Background: This study aimed to develop and assess the psychometric features of the Physical Activity at Workplace Questionnaire (PAWPQ) based on the Social Cognitive Theory (SCT) to evaluate employees' physical activity (PA) behaviors at the workplace. Methods: This psychometric cross-sectional study was conducted on 455 employees working in one of the gas refineries in Iran. The participants were selected using the proportional stratified sampling method in 2019. The data collection tools were a demographic information questionnaire, the short form of the International Physical Activity Questionnaire (IPAQ), and a questionnaire developed based on the SCT, whose psychometric features were confirmed in terms of validity and reliability. Data were analyzed using SPSS22 and AMOS20 software. Results: The first version of PAWPQ-SCT had 74 items. After evaluating content and face validity, nine items were removed. The results of the content validity index (0.98), content validity ratio (0.86), and impact score (3.62) were acceptable for the whole instrument. In exploratory factor analysis, after removing seven items-58-item final version of the scale-six factors could explain 73.54% of the total variance. The results of structural equation modeling showed the acceptable fit of the model into the data (RMSEA = 0.052, CFI = 0.917, NFI = 0.878, TLI = 0.905, IFI = 0.917, CMIN/DF = 2.818). Cronbach's alpha coefficient and Intraclass Correlation were 0.90 and 0.86, respectively. Conclusion: This study confirmed that the psychometric features of the 58-item final version of PAWPQSCT constructs were acceptable in a sample of Iranian employees. This questionnaire can be used as a valid and reliable tool to evaluate Iranian employees' PA behaviors and develop effective educational interventions for workers and managers.

Within Field Distribution Pattern and Design of a Sampling Plan for Damaged Onions by the Onion maggot, Hylemya antiqua Meigen(Diptera: Anthomyiidae) (고자리파리에 의한 양파피해(被害)의 포장내(圃場內) 분포양식(分布樣式)과 피해량(被害量) 추정(推定)을 위한 표본추출(標本抽出) 계획(計劃))

  • Park, C.G.;Hyun, J.S.;Cho, D.J.;Lee, K.S.;Hah, J.K.
    • Korean journal of applied entomology
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    • v.24 no.1 s.62
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    • pp.29-33
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    • 1985
  • Every plant in $990m^2$ onion field was inspected for damages by the onion maggot. Maps were constructed every ten days to show which plants were infested and which were not from April 11 to May 21, 1984. The maps were sectioned into squares one of which contains 80 onion plants and the counts of damaged onions in each square were fitted to poisson and negative binomial distribution and tested by chi-square. We argue that the satisfactory fitness of the expected negative binomial $[P(x^2)>0.05]$ provided a useful description of the spatial distribution patterns of the damaged onions. Edge effect was tested by the differences of damage ratio and variance/mean ratio (${\sigma}^2/m$) between edge and center part. The result showed that the damage ratioes and variances of all the periods, ${\sigma}^2/m$ values after May 1 were greater in edge part than in center part. Again, the maps were sectioned into four blocks and the squares (sample units) were sectioned into quadrants. By application of the variance component technique, it was suggested that $2{\sim}8$ sample units for 5% sampling error and $1{\sim}2$ sample units for 10% error should be sampled randomly to estimate the damage ratio when $2{\sim}3$ quadrants were inspected.

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The Variation of Nutural Population of Pinus densiflora S. et Z. in Korea -Change of variance due to number of family as sample size to affirm the population and family variations- (소나무 천연집단(天然集團)의 변이(變異)에 관(關)한 연구(硏究)(IV) -집단간(集團間) 및 가계간분산(家系間分散) 추정(推定)에 영향하는 가계수(家系數)에 대하여-)

  • Yim, Kyong Bin;Kwon, Ki Won;Lee, Kyong Jae
    • Journal of Korean Society of Forest Science
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    • v.35 no.1
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    • pp.39-46
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    • 1977
  • In the analysis of variance between population and between individual trees (families), the fluctuation of values of variances due to sample size, (number of family) was analysed by two different designs, i.e. 2-level nested design with equal sample size and randomized complete block design. The variables were seedling heights and root calipers of 1-0 and 1-1 seedlings of Pinus densiflora S. et Z. The details of three natural stands and their progeny characters were presented in previous reports. 1. In nested design analysis. increase of sample size resulted the decrease of F-values among families in general, however, the F-values among populations showen the increasing tendency. The smaller the sample size, the larger the F-values fluctuation was resulted in general. At the point of beyond sample size 10, however, the fluctuation become to be stabilized. The F-value fluctuation seemed to be more in the case of analysis with random sampling method than with sequentially accumulated sampling method. And also such a tendency was more obvious in smaller sample size than in large one. 2. In R.C.B.D. analysis, the sample size to affirm the family variation was smaller than that for population variations.

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Determinants of Decision Making in Employment Among the Non-Working Elderly Persons (도시지역 미취업 노인들의 취업의사 결정요인에 관한 연구)

  • Hur, Jun-Soo
    • Korean Journal of Social Welfare
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    • v.58 no.1
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    • pp.291-318
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    • 2006
  • There were many studies conducted on economical aspects of employment among the elderly in national level, however, very few studies examined social and psychological aspects of senior employment and employment preferences of the elderly persons. The purposes of this study were to examine major determinants of decision making in employment, and to explore some relationships among decision making of employment, socio-economic factors, health and psycho-social factors, and labor and economical factors among non-working elderly persons in the community. In all, two-hundred-twenty elderly persons were interviewed and one-hundred-ninety-four were analyzed in this study. The descriptive statistics, analysis of variance, correlation analysis, and logistic regression were used for the data analysis in this study. The study found that the respondent's sex, ages, education, numbers of children, physical health, ADL, self-efficacy, economical stress, numbers of years in labor, asset of real estate, family allowances, and the benefit levels of pension were major determinants of decision making in employment among non-working elderly persons. Finally, some implications were discussed for developing effective senior employment in national policy, job related services, and welfare programs of the elderly persons for the successful aging.

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Golfers' Intention to Adopt UV Specialized Clothing as Innovation: Based on Rogers Theory (골퍼의 자외선 차단의복의 수용 의도: Rogers의 혁신확산이론을 중심으로)

  • Sung Heewon;Slocum Ann C.
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.12 s.138
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    • pp.1554-1561
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    • 2004
  • In the U.S., outdoor enthusiasts such as golfers have been focused on skin cancer prevention practices since their outdoor activities lead to extensive sun exposure during peak sun hours. The purposes of this study were to investigate golfers current sun protection behaviors and five attributes and their impacts on the intention to adopt UV specialized clothing based on Rogers' theory. UV specialized clothing as a preventive innovation is related to sun protection behaviors. However, there has been little effort to explain the intention to adopt a preventive innovation regarding health-related practices. With a convenience sampling method, a total of 158 useful questionnaires were collected. Ninety one percent were male golfers, and their age ranged from 16 to 80 years old(mean age=30 years). About $25\%$ reported to practice sun protection behaviors. About $70\%$ disagreed on the relative advantage, compatibility, observability, and triability of UV specialized shirts and reported the low intention to purchase it. Current sun protection behaviors and five attribute variables were entered in the multiple regression equation to explain the dependent variable of intention to adopt the innovation. Triability was the best predictor of the intention to adopt UV specialized shirts, followed by current sun protection behaviors, compatibility, and relative advantage. With four predictors, $45\%$ of the variance of intention to adopt was explained. The present study provides how the golfers current sun protection behaviors play important roles in explaining the intention to adopt the preventive innovation. Physical and functional features of UV specialized clothing were also significantly associated with their intentions to adopt it.

Factors Influencing Quality of Nursing Service among Clinical Nurses: Focused on Resilience and Nursing Organizational Culture (상급종합병원 간호사의 간호서비스 질에 영향을 미치는 요인: 회복탄력성과 간호조직문화를 중심으로)

  • Shin, Eun Suk;An, Minjeong;Choi, Myoung Lee;Lee, Ae Kyong;Jeon, Eun Ah;Jeoung, Young Mi;Seo, Mi Wha;Kim, Hae Kyoung;Hwang, Jin Hwa;Choi, Ok Ja;Kim, Seon Hee;Park, Sumin;Hwang, Yoon Young
    • Journal of Korean Clinical Nursing Research
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    • v.23 no.3
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    • pp.302-311
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    • 2017
  • Purpose: The purpose of this study was to examine nursing organizational culture and resilience and their effects on quality of nursing service. Methods: A cross-sectional study was conducted. A convenience sampling method was used to collect data from 199 participants who worked in a tertiary hospital in G city. Demographic and work related variables, quality of nursing service, resilience, and nursing organizational culture were measured using validated self-report questionnaires. Results: All of the participants were women and the majority were staff nurses and single. A statistically significant difference in quality of nursing service was found for age, marital status, educational level, clinical career, position and perceived health status. Age, educational level, clinical career, position, resilience, innovation-oriented culture, relation-oriented culture, and hierarchy-oriented culture were significant predictors of quality of nursing service, explaining 47% of total variance. Among the predictors, resilience was the strongest predictor, followed by innovation-oriented culture, and hierarchy-oriented culture. Conclusion: Findings indicate that quality of nursing service can be improved by raising individual nurse's resilience and advancing nursing organizational culture. Considering the identified factors, researchers and administrators need to develop and provide clinical nurses with a variety of programs to improve the quality of their nursing service.

Survey of Adults' Perceptions of the Association between Chronic Diseases and Oral Health (일부 성인의 만성질환과 구강건강 연관성에 대한 인식조사)

  • Kim, Cheoul-Sin;Choi, Yong-Keum
    • Journal of dental hygiene science
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    • v.17 no.1
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    • pp.12-19
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    • 2017
  • The aim of this study was to investigate adult individuals' perceptions on the association between chronic diseases and oral health provide basic data required for motivating individuals to follow ideal oral health behaviors and boost their interests in oral disease prevention and treatment. Subjects in their 20s to 50s were selected through the convenience sampling method and eleven questions were set as factors and answered via self-administered questionnaires. To determine statistical significance, analysis of variance was used with the level of significance set at 0.05. The subjects' perception of the association between chronic diseases and oral health were analyzed with respect to their health behaviors. Individuals with relatively higher stress levels demonstrated higher levels of perception levels (p<0.05). Public education regarding the association between chronic diseases and oral health has not been ideally effective in South Korea. Thus, the general public's perceptions of the association between chronic diseases and oral health should be revised. In addition aspects regarding this matter should be enhanced within oral health education programs which often only focus on demonstrating the importance of oral health management so that individuals can get sufficient information on the association between chronic diseases and oral health.

An Analytic Study on Influencing Factors for Sexual Satisfaction in Women Who have had a Hysterectomy (자궁절제술 부인의 성생활 만족에 관한 요인 분석)

  • 장순복
    • Journal of Korean Academy of Nursing
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    • v.19 no.2
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    • pp.160-172
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    • 1989
  • This research was done to clarify the factors related to sexual satifaction in women who have had a hysterectomy, and to idenify which factors had statistically significant influence of sexual satisfaction of the subjacts. The objective of this study was to identify the variables related to sexual adaptation which might be changed by nursing intervention. This was a cross-sectional descriptive correlation study. There were 230 subjects in the study, and they were selected by a convenient sampling method. The tool. for this study was developed by the researcher through modification of the Dergatis Sexual Function Inventory(DSFI). A pilot study was done to determine the necessary modifications. Data collection was done between Sept. 1987 and Du. 1987 using a mailed questionnaire. The characteristics of the subjects were as follows : The mean age of the subjects was 42.3 years and 204(87.4%) of the subjects had nine or more years of education. The mean income of the subjects was 85.8870 won / month, and 179(77%) of them were housewives. The mean number of pregnancies and children were 4.9 and 2.5 respectively. Oophorectomies were included in the surgery for 66(28.7%) of the subjects. Only 12(5.2%) were planning to have more children. Only 88(38.3%) of the subjects had received information prior to the surgery regarding health problems related to the operation and less than half, 111 (48.3%), had received this kind of information before discharge. Lay persons were the source of information about the post-operation status for 196 (85.2%) of the subjects, but the content of the information did not significantly influence the sexual satisfaction score. Only 16(7.0%) of the subjects said they regretted having a hysterctomy while 102(44.3%) said they were pleased to have had a hysterectomy. Ninety (39.1 %) of the subjects reported that their husbands had “stress” and 164(71.3%) of the subjects reported “stress”. The results of this study are summarized as follows : 1. The mean score for sexual satisfaction of the subjects was 34.24 with a possible maximum score of 50.00. Eighty two(35.8%) were responded that they were satisfied with their sexual life but 61 (26.5%) were responded that they were dissatisfied with their sexual life 2. The following 15 factors extracted from the results of the data analysis were significantly related to sexual satisfaction(p<.05) ; support of husband, body image, emotion, knowledge of sex, menopausal symptoms, sexual behavior, the feelings the subjects had about the hysterectomy, stress for both subject and husband, the number of children, health information given before operation, job, age, level of education and income. The five most important factors influencing sexual satisfaction were identified by using stepwise multiple regression analysis. The most important factor was support of husband, which explained 17.83% of the total variance. The remaining factors in order of significance were : Knowledge of sex, income, job, and emotional status. Those five factors explained 35.16% of the sexual satisfaction. In conclusion, for the care of women who are going to be discharged from hospital after having had a hysterctomy, nurses have to work with the husbands to help them to understand the importance of their support. Nurses also need to make sure that the subjects have an adequeate knowledge of sexual life after a hysterectomy. Also nursing interventions should focus on subjects who do not have a job, who are of low economic status, and the subjects who are under the unpleasant mood.

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