• Title/Summary/Keyword: Stepwise multiple regression analysis

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Strategies of Improve Elderly Nutrition through Nutrition Education : Evaluation of the Effectivenss of the Program (영양교육에 의한 노인 영양증진전략연구 : 효과분석)

  • 임경숙;민영희;이태영;김영주
    • Korean Journal of Community Nutrition
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    • v.4 no.2
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    • pp.207-218
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    • 1999
  • The increased number of elderly in Korea presents great challenges for community nutrition programs. Strategies to enhance elderly nutrition are needed, as well as dietary advice that are reality-based and tailored to the need of the elderly. The purpose of this study was to evaluate the overall effectiveness of an elderly nutrition improvement program(ENIP), by assessing changes in nutrition knowledge, attitudes, and behavior after program completion. ENIP was conducted in Suwon for 4 months in 1998 at 5 centers for the elderly. The program provided individual nutrition counseling and brief biweekly group education sessions. To stimulate participation and motivation, the elderly in two centers were served free milk packs(200ml) three time a week during the program(milk+education group), and the elderly in 3 other centers were served yoghurt on the program day(education group). Altogether, 102 subjects finished the program(milk+education group 67 ; education group 35). Data about nutrition knowledge, dietary attitudes, diet records(24 hour recall) and dietary habit was collected before(baseline) and after the program(follow-up). The Drop-out rate for the milk+education group(2.9%) was significantly lower than that for the education group(30.0%)(p<.001). The Nutrition Knowledge fo females milk+education group increased significantly after the program, but no significant differences were observed in other groups. Over 60% of all the elderly showed positive responses to the healthy eating attitudes. Energy, protein, vitamin A, riboflavin, Calcium and Potassium intakes improved in the male milk+education group. The Vitamin C intake improved in the male education group. Energy and vitamin A intakes improved in the female milk+education group and energy, vitamin A, thiamin, riboflavin, niacin, Ca nad P in the female education group. A stepwise multiple regression analysis was performed to examine the effects of food intake changes on overall nutrient quality. For all elderly, the fish intake explained 12.6% of the variance, followed by candy intake and vegetable intake(model $R^2$=19.6%). Dietary habits such as meal time regularity and salty food reduction were markedly improved in both groups. Sixty-one percent of the milk+education subjects stated their participation was voluntary and active, while 51% of education subjects did. Sixty four percent of the subjects stated their interest on diet increased remarkably through program participation. Considering the results, it is conjectured that ENIP had a great impact on nutrient intake, dietary attitudes and habits. Milk supplement showed no direct effects on elderly nutrition improvement, but it encouraged the program by reducing drop-out rates and inducing voluntary participation. Therefore milk supplement could enhance the community nutrition education program. Moreover it is strongly suggested that the ENIP be expanded to other communities.

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A Study on the Improvement of Nurses' Morale (보건간호사의 사기진작(士氣振作)에 관한 연구)

  • Kwon Dong Yeon
    • Journal of Korean Public Health Nursing
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    • v.15 no.2
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    • pp.225-238
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    • 2001
  • The purpose of this study is to examine public health nurses for their morale, test the effect of each factor on the morale, determine the variables affecting the morale, and thereby, provide for some basic data useful to the development of personnel affair administration for nurses. The survey on the nurses for public health centers was conducted for 10 days from April 23 to May 2, 2001; 96 nurses from Pusan, 101 from Kyonggi-do and 108 from Kangwon-do. The results of the study are as follows; 1. For the demographic variables, those aged between 31 and 39 accounted for the majority $(50.2\%)$ of the sample. $90.8\%$ was married, and $67.9\%$ of the sample graduated from junior colleges. $29.6\%$ of them had worked for 10-14 years and $62.5\%$ was of the seventh rank. $62.3\%$ of the nurses was recruited, and $59.4\%$ had chosen the public job for its guaranteed status. Half the nurses were working for the county population of which was more than 260 thousands, and $53\%$ of the nurses was serving the public health centers with 11-15 members. $47.3\%$ of them perceived that their living standard is middle or lower. 2. The degree of the moral was found as mean score. 2.65, which is interpreted as low. It has 11 factors. The rank of mean score of the factors is job satisfaction (3.36), sense of belonging (3.36), sense of recognition (3.30), stress due to supervision (3.13), degree of participation (3.05) and self-achievement (3.04), while those scoring lower points were assurance of status (2.58), pay level (2.53), working conditions (2.35) and promotion opportunity (2.31). 3. The degree of moral depending on the demographic variables was significantly affected by such variables as age. academic background, career, rank, employment method, motive for the job, size of the population served and living standards. 4. The result of the Stepwise multiple regression analysis for the morale factors, it was found that self-achievement accounted for $61\%$ of the total variance of the degree of morale, followed by stable status $(18\%)$, working conditions $(8\%)$, job requirements $(4\%)$ and promotion opportunities $(2\%)$; these five factors explained about $94.6\%$ of total variance of the degree of nurses' morale. On the other hand. age $(8\%)$ and academic background $(2\%)$ accounted for $10\%$ of the total variance of the degree of morale. 5. The factors affecting nurses' job life was economic need $(26.7\%)$, personnel management $(17.5\%)$, sense of recognition $(13.2\%)$, human relationship $(11.0\%)$, stable status and personal development in rank. On the other hand, the factors influencing on their possible resignation were children's bringing-up $(27.8\%)$, poor personnel management and promotion $(13.3\%)$, workload $(11.1\%)$ and little personal development $(8.9\%)$, Since such morale factors as promotion opportunity, working condition. pay level and stable status scored lower, it is required to reconsider those factors to improve nurses' morale.

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The Relationship between Perceived health status, Health conception and Health promoting behavior in the Elderly (노인의 지각된 건강상태 및 건강개념과 건강증진 행위와의 관계)

  • Kim Hyo Jung;Chae Sun Ok;Park Young Sook;Woo Sun Hye
    • Journal of Korean Public Health Nursing
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    • v.15 no.2
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    • pp.262-274
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    • 2001
  • This study was undertaken to grasp the relationship between perceived health status, health conception and health promoting behavior in the elderly. The subjects for this study were 157 old persons in Kyung-ju city. Data were collected by interview with questionnaires from August 24 to October 10, 1999. Analysis of the data was done by SPSS program using descriptive statistics, t-test, ANOVA, Pearson Correlation Coefficient, stepwise multiple regression. The results were summarized as follows 1. For the practice of health promoting behavior. the mean score was 2.52. The factor of the highest mean score was nutrition(3.02) and factor of the lowest mean score was exerciset(2.03). 2. According to age(F=3.35, P=.012), sex(t=2.26, P=.025), marital status (F=5.08, P=.007), education(F=4.22, P=.003), family numbed(F=5.31, P= .006), people living together (F=2.77, P=.044), economic status(F=7.10, P=.00l), average monthly pocket money (F=3.35, P=.012), there were differences of health promoting behavior. 3. According to age(F=3.40, P=.01l), sex(t=4.30, P=.000), education(F=8.55, P=.000), economic status(F=12.59, P=.000), average monthly pocket money(F=4.26, P=.003), present disease(t=-8.41, P=.000), there were differences of perceived health status. According to marital status(F=3.36, P=.037), education(F=2.89, P=.038), there were differences of health conception. 4. Performance in the health promoting behavior was significantly correlated with perceived health status(r=.272, P=.00l), health conception(r=.345, P=.000) 5. The combination of well-being health conception and average monthly pocket money explained $24.7\%$ of the variance of health-promoting behavior. On the basis of the above findings the following recommendations are made; Nursing interventions enhancing exercise or activity, accountability for health, stress management of the elderly must be provided. And Cost-effective health promoting program for the elderly must be developed.

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Locational Characteristics of Knowledge Service Industry and Related Employment Opportunity Estimation in the Seoul Metropolitan Area (서울대도시권 지식서비스산업의 입지적 특성과 관련 업종별 고용기회 예측)

  • Park, So Hyun;Lee, Keumsook
    • Journal of the Economic Geographical Society of Korea
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    • v.19 no.4
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    • pp.694-711
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    • 2016
  • This study analyzes the spatial characteristics of knowledge industry which has shown relatively rapid growth in the low-growth economy situation in recent years. In particular, we catch hold of the locational characteristics of the knowledge service industry which occupies the highest ratio by professional-expert jobs favoured by young generations, as well as estimate their occupational employment opportunities. By applying Location Quotient(LQ) and LISA, we reveal the spatial distribution patterns of publishing business, information service business and education service business in the Seoul Metropolitan area, and examine the changes in the spatial patterns during the last ten years. In order to understand the socio-economic factors which explain their locations, we apply the stepwise multiple regression analysis. Furthermore, we predict the changes distribution of Knowledge service industrial employment by applying Markov Chain Model. As the result, we found their clusters at the specific locations, while there is the significant variations in the socio-economic variables related their locations respectively. The related job opportunities of the knowledge service businesses in the Seoul Metropolitan area are predicted steady growth trend for the next four years, even though dull or stagnant trend is expected for other industries. This study provides basic resources to the planning for young generation employment problem.

Dynamics and Seasonal Succession of Dinoflagellate Community in Masan Bay, Korea (마산만(馬山灣)의 와편모조류(渦鞭毛藻類) 군집(群集)의 동태(動態) 계절적(季節的) 천이(遷移))

  • LEE, JOON-BAEK;YOO, KWANG-IL
    • 한국해양학회지
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    • v.25 no.2
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    • pp.106-116
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    • 1990
  • The dynamics and seasonal succession of dinoflagellate community, and their correlations with environmental parameters were investigated during the period from April, 1986 to March, 1987 at 6 selected stations in Masan Bay, Korea. The dinoflagellate standing crops varied extensively with months and stations: ranging from 44 to 2,789,900 cella/ l at surface layer and from 52 to 165,714 cells/ l at bottom layer, respectively. The distribution of standing crops by size class of dinoflagellate species showed that a group of 20-um size class was predominant throughout the present survey, since the most of dominant species have belonged to the size category. Among dominant species, Gyrodinium fissum was most dominant throughout the year in all sampling stations, particulary in June. Scripsiella trochoidea was predominant in May, Protoperidinium bipes and Prorocentrum minimum from June to September, Prorocentrum triestinum, P micans and Ceratium fusus from September to December, and Heterocapsa triquetra from December to April. The stepwise multiple regression analysis between dinoflagellate and environmental parameters revealed that salinity, nitrate-N, pH, and transparency were correlated with the variations of standing crops of dinoflagellate.

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The Comparison of Health Promoting Behaviors for the Korean Elderly residing in Korea and Japan (한국거주와 일본거주 한국노인의 건강증진 행위 비교)

  • Park, Kyung-Min
    • Research in Community and Public Health Nursing
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    • v.13 no.1
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    • pp.68-78
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    • 2002
  • This study intended to analyze the health promoting behaviors by comparing various factors according to the residence areas(Korea or Japan) of Korean Elderly. and to present basic data in planning systematic and effective programs of health promotion for each residence area. The subjects of this study were 164 Korean elders in Daegu, South Korea, and 164 elders in Aichi prefecture, Japan. Data was collected by interviews and self-administered questionnaires from the 1st to the 20th of April in 2000. The tool for this study was based on Walker et al.(1987)'s Health Promotion lifestyle Profiles (HPLP). The analysis was performed with Cronbach's $x^2-test$, t-test. ANCOVA, Kendal tau, Pearson correlation, and Stepwise Multiple Regression test using SPSS program. The results are as follows: 1. There was a significant difference in occupation($x^2$=41.3. p=0.000), the source of the pocket money($x^2$=114.36. p=0.000) by the residence areas in terms of socio-demographic characteristics. 2. There was a significant difference between the two groups on the health promoting behaviors(t=-8.19. p=0.000). The score of elders group in the South Korean group on health promoting behaviors was 2.32. showing 0.33 lower than that of the elders group in Japan(2.65). 3. ANCOVA involving occupation and the source of pocket money as co-variables. showed significant differences (F=15.37. p=0.000) regarding health promoting behaviors according to the residence areas. 4. In consideration of variables that have an influence on health promoting behavior by residence areas, pocket money occupied 11.5% of health promoting behavior in the elders group in South Korea. In the elders group in Japan, pocket money occupied 18.1% of health promoting behavior and 20.6% including education. The suggestions based on the results of this study are as follows.: 1. It is necessary to develop health promoting programs considering the residence areas of Korean elders. 2. It is necessary to develop social programs for improving the education level and solving pocket money problems, which are the significant factors for the health promoting behavior of Korean elders.

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Nutritional Factors Related to Bone Mineral Density in the Different Age Groups of Korean Women (한국 여자의 연령별 골밀도에 영향을 미치는 영양요인 분석)

  • 유춘희;이정숙;이일하;김선희;이상선;정인경
    • Journal of Nutrition and Health
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    • v.35 no.7
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    • pp.779-790
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    • 2002
  • Nutritional factors affecting bone mineral density (BMD) in the different age groups of Korean women were investigated to obtain baseline data for maintaining bone health. Information on diet and anthropometry were collected in 80 elementary school children (height 127.2 cm, weight 27.3 kg), 84 high school students (height 161.6 cm, weight 52.4 kg), 100 adults aged 25 to 35 years (height 159.4 cm, weight 52.7 kg) and 120 elderly people over 60 years of age (height 150.9 cm, weight 55.6 kg). Data for nutrient intake were obtained by 24-hour recall method. BMDs of lumbar spine (L$_2$-L$_4$) and femoral neck were measured by dual energy x-ray absorptiometry. The relationship between BMD of femoral neck and nutritional factors were analyzed. The average BMD of femoral neck for females was 0.61 g/$\textrm{cm}^2$ in children, 0.88 g/$\textrm{cm}^2$ in adolescents, 0.90 g/$\textrm{cm}^2$ in adults, 0.64 g/$\textrm{cm}^2$ in elderly people. Among the adult subjects, 11.0% was classified as osteopenia in the femoral neck. For the elderly, the prevalence of osteopenia and osteoporosis were 34.2% and 47.5% of the subjects. It was shown the intake of energy, protein, plant protein, animal protein, fat, carbohydrate, Ca, P, Fe, vitamin A, thiamin, riboflavin, niacin, vitamin C, carbohydrate energy percent and fat energy percent influenced bone health status in all age groups. In the MAR on bone health status, children, adult and elderly subjects were significantly different among groups classified by bone health status and the MAR of the groups with good in bone health was higher. The RDA percent of each nutrient was influence factor on BMD. Nutrient intake of energy, protein, P, Fe, thiamin, niacin were lower BMD on below 75% of Korean RDA. Stepwise multiple regression analysis revealed that several dietary factors were influence on BMD. MAR on femoral neck BMD of children and elderly subjects was the highest influence factor. Beyond this, the most influential dietary factors on BMD were the vitamin A, total Ca and vegetable Ca. The above results have confirmed that dietary factors influence BMD in various age groups. Energy, protein, Ca, P, Fe, thiamin, riboflavin, niacin, vitamin C as well as MAR were important dietary factors influencing BMD. The results of this study revealed that people who received sufficient nutrients intake showed healthy bone status. The MAR mainly influenced the bone health status.

Analysis of Within-Field Spatial Variation of Rice Growth and Yield in Relation to Soil Properties

  • Ahn Nguyen Tuan;Shin Jin Chul;Lee Byun-Woo
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.50 no.4
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    • pp.221-237
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    • 2005
  • For developing the site-specific fertilizer management strategies of crop, it is essential to know the spatial variability of soil factors and to assess their influence on the variability of crop growth and yield. In 2002 and 2003 cropping seasons within-field spatial variability of rice growth and yield was examined in relation to spatial variation of soil properties in the· two paddy fields having each area of ca. $6,600m^2$ in Suwon, Korea. The fields were managed without fertilizer or with uniform application of N, P, and K fertilizer under direct-seeded and transplanted rice. Stable soil properties such as content of clay (Clay), total nitrogen (TN), organic mater (OM), silica (Si), cation exchange capacity (CEC), and rice growth and yield were measured in each grid of $10\times10m$. The two fields showed quite similar spatial variation in soil properties, showing the smallest coefficient of variation (CV) in Clay $(7.6\%)$ and the largest in Si $(21.4\%)$. The CV of plant growth parameters measured at panicle initiation (PIS) and heading stage (HD) ranged from 6 to $38\%$, and that of rice yield ranged from 11 to $21\%$. CEC, OM, TN, and available Si showed significant correlations with rice growth and yield. Multiple linear regression model with stepwise procedure selected independent variables of N fertilizer level, climate condition and soil properties, explaining as much as $76\%$ of yield variability, of which $21.6\%$ is ascribed to soil properties. Among the soil properties, the most important soil factors causing yield spatial variability was OM, followed by Si, TN, and CEC. Boundary line response of rice yield to soil properties was represented well by Mitcherich equation (negative exponential equation) that was used to quantify the influence of soil properties on rice yield, and then the Law of the Minimum was used to identify the soil limiting factor for each grid. This boundary line approach using five stable soil properties as limiting factor explained an average of about $50\%$ of the spatial yield variability. Although the determination coefficient was not very high, an advantage of the method was that it identified clearly which soil parameter was yield limiting factor and where it was distributed in the field.

Effects Of Oral Health Awareness and Oral Health Behavior on Preventive Behavior of Cardiocerebrovascular disease in Cardiocerebrovascular Disease Risk Group (심뇌혈관질환위험군에서의 구강건강인식과 구강건강행위가 심뇌혈관질환 예방행위에 미치는 영향)

  • Lee, Sun-Kyung;Hwang, Seon-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.8
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    • pp.303-311
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    • 2018
  • This study was conducted to investigate the effects of oral health awareness and oral health behavior on cardiocerebrovascular prevention behavior in a cardiocerebrovascular diseases risk group and provide basic data for a nursing intervention program for the group. Data were collected from 131 people in the risk group of cardiocerebrovascular diseases living in J Province in February and March of 2018. The obtained data were analyzed using descriptive statistics, t-tests, Pearson's correlation, and stepwise multiple regression analysis. The results revealed that preventive acts were positively correlated with subjective oral health state (r=0.261, p=0.003), importance of oral health (r=0.250, p=0.004), and practice of oral health (r=0.303, p<0.001). Moreover, acts to prevent cardiocerebrovascular disease were influenced by oral health (${\beta}=0.29$, p<0.001), age (${\beta}=0.27$, p=0.001), and subjective oral health state (${\beta}=0.24$, p=0.003). Specifically, scores of preventive acts for cardiocerebrovascular diseases increased with higher degree of oral health behavior, older age, and better subjective oral health state. These variables had an explanatory power of 19.3%. The results of this study imply a need to prepare measures to enhance the oral health level of the risk group of cardiocerebrovascular diseases and conduct ongoing follow-up studies of the perception, attitude, and behavior of individuals toward oral health, as well as the state of oral health.

Factors Influencing Pain Intensity in Patients with Advanced Cancer (진행암 환자의 통증강도에 미치는 영향요인)

  • Lee, Sun-Hee;Chung, Bok-Yae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.1
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    • pp.506-516
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    • 2018
  • This study was conducted to identify pain intensity and factors affecting pain intensity in patients with advanced cancer. Data were collected between June 1 and September 30, 2016 using a questionnaire. The sample size was 221 patients with advanced cancer who were admitted to the oncology department or who visited the outpatient of the general hospital. Data were evaluated by descriptive and Pearson's correlation analyses, one way ANOVA, t-tests and stepwise multiple regression analysis. The mean scores of pain intensity of cancer patients were 4.23 (${\pm}1.68$) based on the average daily pain intensity. Factors influencing pain intensity were illness perception (${\beta}=.27$, p<.001), pain opioid analgesics beliefs (${\beta}=.24$, p<.001), education (middle school, ${\beta}=.24$, p=.001), economic status (${\geq_-}400$, ${\beta}=.20$, p=.001), gender (female, ${\beta}=.14$, p=.017), pain management education (${\beta}=-.14$ p=.020) and diagnosis (Pancreatic Ca, ${\beta}=.14$, p=.020). It explained 28%. Overall, the results of this study revealed that illness perception and pain opioid analgesics beliefs were important factors influencing pain intensity, but that the most important influencing factor was illness perception. Accordingly, it is necessary to develop pain management strategies that include not only pain management knowledge and pain opioid analgesics beliefs, but also illness perception.