• Proceedings of the Korea Society for Industrial Systems Conference
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• 2009.05a
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• pp.153-159
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• 2009

The purpose of this paper is to suggest the problems of basic population data(1960-2005) and the data(2006-2050) of population projections reported by Korean National Statistical Office in November 2006. The errors on the basic population data can be easily checked by using the graphical analysis and the method of linear regression analysis. It is necessary to revise the population projections reported by Korean National Statistical Office.

• Korean Journal of Adult Nursing
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• v.22 no.6
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• pp.634-643
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• 2010

Purpose: The purpose of this study was to identify the reported factors influencing fatigue of middle aged women. Methods: Two hundred seven middle aged women between 40 and 59 years of age were recruited from five areas in Korea from March 1, 2010, to April 20, 2010. Data were collected by self-reported questionnaires. Data analysis was done using SPSS/WIN 15.0 program for descriptive statistics, Pearson correlation coefficients and stepwise multiple regression. Results: The average score of fatigue was $2.34{\pm}0.40$. There were significant differences in reported fatigue according to economic status and health status. The reported fatigue was significantly correlated with somatic attribution, psychological attribution, normalizing attribution, depression, marital adjustment, stress, and social support. The major factors that affect fatigue in middle aged women were stress, depression, and normalizing attribution, which explained 32.3% of fatigue. Conclusion: The findings can reduce the fatigue by controlling stress and depression. Additionally, this study can understand the attribution of fatigue in middle aged women. More studies are needed to identify other variables that influence on the fatigue of middle aged women.

• Journal of Korean Institute of Industrial Engineers
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• v.23 no.4
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• pp.755-767
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• 1997

Analyzing autocorrelated data set is still an open problem. Developing on easy and efficient method for severe positive correlated data set, which is common in simulation output, is vital for the simulation society. Bootstrap is on easy and powerful tool for constructing non-parametric inferential procedures in modern statistical data analysis. Conventional bootstrap algorithm requires iid assumption in the original data set. Proper choice of resampling units for generating replicates has much to do with the structure of the original data set, iid data or autocorrelated. In this paper, a new bootstrap resampling scheme is proposed to analyze the autocorrelated data set : the Threshold Bootstrap. A thorough literature search of bootstrap method focusing on the case of autocorrelated data set is also provided. Theoretical foundations of Threshold Bootstrap is studied and compared with other leading bootstrap sampling techniques for autocorrelated data sets. The performance of TB is reported using M/M/1 queueing model, else the comparison of other resampling techniques of ARMA data set is also reported.

• Phonetics and Speech Sciences
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• v.3 no.1
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• pp.111-116
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• 2011

The purpose of this study was to analyze the association between self-reported voice problems and voice disorders in the Korean adult population. Data were collected from the 4th Korea National Health and Nutritional Examination Survey (2008) from 3,135 subjects (1,310 men and 1,825 women) aged 19 years and older. Multi-nominal logistic regression analyses were used to examine the association between self-reported voice problems and voice disorders in the Korean adult population. Adjusting for covariates (age, sex, education level, job, smoking, alcohol drinking, thyroid disorders, pain and discomfort during the last 2 weeks), self-reported voice problems included independently associated functional voice disorders (OR=4.70, 95% CI: 3.14-7.03) and organic voice disorders (OR=3.89, 95% CI: 1.57-9.65). The results of the present study verified that self-reported voice problems are valuable indicators for voice disorders. Further research is needed to ascertain the effect of self-reported voice problems on voice disorder in adults.

• Korean Journal of Adult Nursing
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• v.29 no.3
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• pp.235-245
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• 2017

Purpose: Reported insomnia and decreased sleep quality are common among older adults. The purpose of this study was to identify factors contributing to insomnia and decreased sleep quality among elderly persons living within a community. The data will be verified with Actigraph which is a non-invasive measurement of rest/activity cycles. Methods: 137 participants over 65 years old were recruited from a senior welfare center. Their mean age was $74.07{\pm}5.18years$ old and majority was women (69.3%). The quality and quantity of nighttime sleep were assessed using Varren-synder-Halper Sleep Scale and a sleep log. Depression and fatigue were assessed using Geriatric Depression Scale Short Form and Fatigue Severity Scale, respectively. Pain was assessed using 11-point Numeric rating scale. An actigraph was used to verify the self-reported sleep. Results: Ninety-two participants (67.2%) reported insomnia. Sixty-eight subjects (49.6%) reported good sleep. Of the participants, 56.2% reported depression and 33.6% reported fatigue. In logistic regression, depression was related to insomnia (OR=3.09, p=.003). Sleep quality was related to depression (OR=2.13, p=.045) and fatigue (OR=2.24, p=.044). The data from the Sleep logs correlated with data obtained from the actigraph. Conclusion: Depression significantly influenced insomnia and sleep quality whereas fatigue only influenced sleep quality. Thus, depression and fatigue should be closely monitored among elderly persons with sleep disturbances.

• Journal of Korean Public Health Nursing
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• v.19 no.2
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• pp.349-358
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• 2005

Purpose: This study investigated the prevalence of drinking behavior among elementary students, and the results may serve as the basic data for developing a drinking prevention program. Method: For this study, questionnaires were given to 734 fourth, fifth and sixth graders in five elementary schools in U county, North Chungcheong Province. The data was were collected from December 8 to December 20, 2003 and the data was analyzed using SPSS/PC for the descriptive and chi-square statistics. Results: Of these students, 72.8% reported that they had drunk alcohol. They reported that the first drinking started during the third and fourth grade (37.8%), at family gatherings (41.0%), and by mistake (26.0%). They reported that alcohol was tasteless when they first drank (53.1%). The drinking experiences were significantly related to gender. Similarly, environmental characteristics such as the residential area, parental attention, the home atmosphere, and drinking parents were significantly related to drinking behavior. Among the non-drinkers, 70.5% intended not to drink and 6.5% reported they would like to drink in the future. Conclusion: This study suggests the necessity of developing drinking prevention programs with considering the students' demographic and environmental characteristics.

• Journal of Preventive Medicine and Public Health
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• v.50 no.5
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• pp.294-302
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• 2017

Objectives: The objectives of this study were to investigate the agreement between medical history questionnaire data and claims data and to identify the factors that were associated with discrepancies between these data types. Methods: Data from self-reported questionnaires that assessed an individual's history of hypertension, diabetes mellitus, dyslipidemia, stroke, heart disease, and pulmonary tuberculosis were collected from a general health screening database for 2014. Data for these diseases were collected from a healthcare utilization claims database between 2009 and 2014. Overall agreement, sensitivity, specificity, and kappa values were calculated. Multiple logistic regression analysis was performed to identify factors associated with discrepancies and was adjusted for age, gender, insurance type, insurance contribution, residential area, and comorbidities. Results: Agreement was highest between questionnaire data and claims data based on primary codes up to 1 year before the completion of self-reported questionnaires and was lowest for claims data based on primary and secondary codes up to 5 years before the completion of self-reported questionnaires. When comparing data based on primary codes up to 1 year before the completion of selfreported questionnaires, the overall agreement, sensitivity, specificity, and kappa values ranged from 93.2 to 98.8%, 26.2 to 84.3%, 95.7 to 99.6%, and 0.09 to 0.78, respectively. Agreement was excellent for hypertension and diabetes, fair to good for stroke and heart disease, and poor for pulmonary tuberculosis and dyslipidemia. Women, younger individuals, and employed individuals were most likely to under-report disease. Conclusions: Detailed patient characteristics that had an impact on information bias were identified through the differing levels of agreement.

• Korean Journal of Adult Nursing
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• v.14 no.1
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• pp.102-113
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• 2002

Purpose: This study was designed to identify the relationship between self reported climacteric symptoms, self concept and depression in middle aged women. Method: Data were collected through self-reported questionaires which were constructed to include a climacteric symptoms, self-concept and depression of middle-aged women scale. The subjects for this study were 102 women between 40-59 years of age living in P city. The data were analyzed by descriptive statistics, t-test, ANOVA, Pearson Correlation Coefficient. Results: The results obtained from this study were as follows : 1) The relationship between self reported climacteric symptoms and self concept was statistically significant with a negative correlation (r=-0.4862, P0.001). The relationship between self reported climacteric symptoms and depression had a statistically significant positive correlation (r=0.5393, P<0.001). The Relationship between self-concept and depression had a statistically significant negative correlation (r=-0.3769, P<0.001). 2) General characteristic variables significantly related to self reported climacteric symptoms were age (F=3.13, P<0.05) and frequency of pregnancy (F=3.24, P<0.05). General characteristic variables significantly related to frequency of self-concept were age (F=3.13, P<0.05), education level (F=2.97, P<0.05) and occupation (t=1.84, P<0.05). General characteristic variables significantly related to depression were age (F=3.12, P<0.05) and number of children (t=3.59, P<0.05). 3) The obstetrical characteristic variable significantly related to self-reported climacteric symptoms was the frequency of pregnancy (t=3.24, P<0.05). Conclusion: This study shows possible implications for nursing intervention for middle-aged women's health to prevent and relieve climacteric symptoms.

• Journal of the Korean Data and Information Science Society
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• v.20 no.6
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• pp.1145-1153
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• 2009

The problem of Korean registered population is that population classified by age increases as one grows older until 6 age or 7 age. This paper is to suggest an algorithm of the re-projection under 7 age on Korean registered population and to analysis of comparison with the reported population statistical data. As the result, the reprojections population is trusted in the number of 0 age on the comparison of other reported population statistical data.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.15 no.3
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• pp.342-349
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• 2008

Purpose: This study was done to develop data for a hygiene promotion program for elders living on rural islands. Method: Self-administered questionnaires were used to collect data. Results: Most of the elders reported brushed their teeth and washing their faces twice a day. For other types of washing, 98.8% of reported washing their hands after the toilet and 22.8% reported washing their anus after defecation. Most of the elders reported changing their underwear two to three times a month and cutting their nails more than four times a month. Itchiness was reported by 24%. There were significant differences according to age for teeth brushing, face washing, shampooing, bathing, washing hands after the toilet, and cutting nails. According to sex, there were significant differences in teeth brushing, face washing, washing hands after using the toilet, washing anus after defecation, changing underwear, cutting nails, and feeling itchy. The elders showed significant differences in bathing, changing underwear, and cutting nails according to subjective economic status. They showed significant differences in teeth brushing and changing underwear when they lived with their families. Conclusion: In order to develop a proper hygiene promotion program for the elderly, their age, sex, and physical condition should be considered as well as their environmental, economical, and geographical condition.