• 응용통계연구
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• 제23권2호
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• pp.263-274
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• 2010

기업경기실사지수는 기업의 지난 실적과 기업가의 계획이나 판단 등을 기초로 하여 만들어지는 대표적인 경기 전망 지수이다. 이 지수는 경제 현장에서 널리 사용됨에도 불구하고 아직까지 규명된 통계적 성질은 많지 않다. 본 논문에서는 기업경기실사지수에 대한 통계적 성질을 고찰한다. 유한모집단에서 모집단 기업경기실사지수를 정의하고 단순확률표집을 가정한 후 모집단 기업경기실사지수 추정량을 구하며, 기업경기실사지수의 기댓값, 분산, 비편향 분산 추정량, 신뢰구간, 상대표준오차를 구한다. 그리고 기업경기실사지수의 평가지표로서 상대표준오차보다는 신뢰구간이 더 합리적임을 언급한다.

• Journal of Preventive Medicine and Public Health
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• 제54권2호
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• pp.129-136
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• 2021

Objectives: This study examined demographic factors hampering access to healthcare at hospitals and suggests policy approaches to improve healthcare management in Thailand. Methods: The data for the study were drawn from a health and welfare survey conducted by the National Statistical Office of Thailand in 2017. The population-based health and welfare survey was systematically carried out by skilled interviewers, who polled 21 519 384 individuals. The independent variables related to demographic data (age, sex, religion, marital status, education, occupation, and area of residence), chronic diseases, and health insurance coverage. The dependent variable was the degree of access to healthcare. Multiple logistic regression analysis was subsequently performed on the variables found to be significant in the univariate analysis. Results: Only 2.5% of the population did not visit a hospital when necessary for outpatient-department treatment, hospitalization, or the provision of oral care. The primary reasons people gave for not availing themselves of the services offered by government hospitals when they were ill were-in descending order of frequency-insufficient time to seek care, long hospital queues, travel inconvenience, a lack of hospital beds, unavailability of a dentist, not having someone to accompany them, and being unable to pay for the transportation costs. Multiple logistic regression analysis showed that failure to access the health services provided at hospitals was associated with demographic, educational, occupational, health welfare, and geographic factors. Conclusions: Accessibility depends not only on health and welfare benefit coverage, but also on socioeconomic factors and the degree of convenience associated with visiting a hospital.

• 방사성폐기물학회지
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• 제21권1호
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• pp.95-114
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• 2023

During the decades after the Fukushima Daiichi Nuclear Power Station (FDNPS) accident, ambient dose rates have markedly decreased when compared to those at the early state of the accident. Government projects have been continuously conducted by surveying the ambient dose rate and radiocesium distributions. Airborne surveys using crewed helicopters and unmanned aerial vehicles (UAVs) are the best methods for obtaining an overall picture of the distribution. However, ground-based surveys are required for accurate measurements near the population. The differences between these methods include the knowledge of the post depositional behavior of radionuclides in land use. The survey results form the basis for policy decisions such as lifting evacuation zones, decontamination, and other countermeasures. These surveys contain crucial findings regarding post-accident responses. This paper reviews the survey methods of government projects and current situation around the FDNPS. The visualization methods and databases of ambient dose rates are also reviewed to provide information to the population.

• 응용통계연구
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• 제27권1호
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• pp.43-59
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• 2014

왜도가 심한 사업체 조사에서는 모집단의 일부를 제외하고 표본을 추출하는 방법인 절사표본추출법이 자주 사용된다. 절사층의 경우 표본 관리가 어렵고 조사비용이 많이 들기 때문에 이를 제외한 조사를 실시함으로써 조사의 효율을 높일 수 있다. 그러나 전체 모집단 추정을 위해서는 절사층의 정확한 총합 추정이 매우 중요하다. 최근 Hwang과 Shin (2013)은 Lavallee와 Hidiroglou (1988)가 제안한 LH 알고리즘을 이용하여 표본층을 층화한 후 표본층에서 얻어진 정보와 절사층에서 얻어진 정보를 결합한 복합추정량을 제안하였다. 본 논문에서는 비용함수를 고려한 새로운 표본 설계를 제안하고, 이를 위한 새로운 복합추정량을 제안하였다. 모의실험과 실제 자료 분석을 통하여 본 논문에서 제안한 복합추정량의 우수성을 확인하였다.

• Journal of Nutrition and Health
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• 제38권3호
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• pp.219-225
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• 2005

The objective of the study was to define dietary patterns in the representative Korean adult population and to explore their associations with other factors. The Korean National Health and Nutrition Survey was conducted on a stratified random sample (n = 9,968) of the Korean population in 2001. This study analyzed data of 5,721 adult population aged 30 and over. Demographic and lifestyle factors were assessed by questionnaires and food consumption by a 24-h recall method. Cluster analysis identified two dietary patterns with 22 food groups: the larger group that included $85\%$ of total subjects was named as the 'traditional' pattern due to greater intakes of white rice, kimchi, and vegetables, and the smaller group was named as the 'modified' pattern which had greater intakes of noodles, bread, snack, and fast foods. The modified pattern had significantly higher proportion in younger age, higher educational level, residing in metropolitan area, and higher household income. The modified group showed significantly higher intake of all nutrients except carbohydrate. Percent of energy from fat intake, $22\%$ was significantly higher in the modified group than $14\%$ in the traditional group. There were no differences in prevalence of metabolic syndrome and its 5 components among patterns. In conclusion, there were two distinctive patterns that were associated with socio-demographic, nutrient intake, and health risk factors in Korea. It should be considered when designing nutrition policy and intervention program.

• Nutrition Research and Practice
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• 제10권2호
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• pp.188-197
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• 2016

BACKGROUND/OBJECTIVES: The purpose of this study is to analyze daily kimchi, vegetable and fruit consumption by general characteristics and vegetable and fruit consumption from 1998 to 2012 by the Korean population based on the data of the KNHANES (Korea National Health and Nutrition Examination Survey). SUBJECTS/METHODS: This study is based on the 1998-2012 KNHNES. Analysis data on 54,700 subjects aged 19 years and older were obtained from health behavior interviews and the 24-hour dietary recall method. RESULTS: Daily kimchi consumption and portion size of kimchi decreased significantly from 1998 to 2012 (adjusted P for trend < 0.0001). Meanwhile, daily consumption of both non-salted vegetable and fruit with and without kimchi did not significantly change between 1998 and 2012. Reduced consumption of kimchi, non-salted vegetable, and fruit was observed for both genders as well as daily meal episodes and cooking locations. Male and female subjects with insufficient non-salted vegetable and fruit intake were increased 1.4 times and 1.3 times, respectively, in 2012 than 1998. All subjects consumed at least 400 g/day of non-salted vegetable, fruit, and kimchi in each survey year, although they consumed insufficient amounts (< 400 g/day) of non-salted vegetable and fruit without kimchi. CONCLUSIONS: Since Koreans generally consume high amounts of fermented vegetables, including kimchi, total vegetables and fruit. Consumption of these foods by the Korean adult population reached 400 g, which is the recommended intake of the WCRF/AICR. Based on this result, it is necessary to promote consumption of kimchi in the Korean population and research the development of low sodium kimchi in the future.

• 보건행정학회지
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• 제30권1호
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• pp.120-125
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• 2020

Unmet healthcare needs lead to increased disease severity, increased likelihood of complications, and worse disease prognosis. To examine the latest status of unmet healthcare needs in South Korea, the four different data configured with nationally representative sample of South Korean population were used: the Korea Health and Nutrition Examination Survey (KNAHANES, 2007-2018), the Community Health Survey (CHS, 2008-2018), the Korea Health Panel Survey (KHP, 2011-2016), and the Korean Welfare Panel Study (KOWEPS, 2006-2018). The proportion of individuals reporting unmet healthcare needs were 7.8% (KNHANES, 2018), 8.8% (CHS), and 10.8% (KHP, 2016). Annual percentage change which characterizes trend for the follow-up period was -9.1%, -3.2%, and -6.8%, respectively. The proportion of individuals reporting unmet healthcare needs due to cost were 1.2% (KNAHANES, 2018), 1.2% (CHS, 2018), 2.5% (KHP, 2016), and 0.5% (KOWEPS, 2018). Annual percentage change which characterizes trend for the follow-up period was -10.3%, -12.0%, -11.3%, and -18.8, respectively. The low-income population and the elderly population were vulnerable groups reporting the highest rate of unmet health care needs. The rate of unmet healthcare needs has been declining since the past decade, still, the disparity between different income groups and age groups suggests that there are many challenges to address.

• 대한한방내과학회지
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• 제42권4호
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• pp.532-546
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• 2021

Objective: This study investigated the perception, diagnosis, and treatment of irritable bowel syndrome (IBS) in the general population, in patients, and in Korean medicine doctors (KMDs) in order to provide basic information for the development of Korean medicine clinical practice guidelines for IBS. Methods: A questionnaire was developed in two versions, one for the general population/patients and one for KMDs. The questions were about the general perception, diagnosis, and treatment of IBS. Both online and offline surveys were conducted using these questionnaires. Results: In total, 213 general population/patients and 435 KMDs responded to the survey. The results of the analysis were as follows. Most of the KMDs diagnosed IBS based on clinical aspects. Acupuncture was the most common treatment, followed by prescription herbal medicine, moxibustion, and manufactured herbal medicine. 34.3% of KMDs used clinical practice guidelines for IBS patient treatment. 57.8% of patients were diagnosed with IBS by doctors at primary medical institutions, and 53.1% were diagnosed with colonoscopy. More than half of the IBS patients who have been treated with Korean medicine said they experienced improvement of symptoms and prevention of recurrence, but more than 70% of the respondents said future safety and effectiveness studies of Korean medicine were needed. Conclusions: In spite of the positive perception of IBS treatment with Korean medicine, actual utilization was relatively low. The development and promotion of, as well as education about, appropriate and reasonable Korean medicine practice guidelines for IBS is necessary.

• 한국환경보건학회지
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• 제45권3호
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• pp.213-221
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• 2019

Objective: This study was performed to evaluate gender and age differences in hygienic behavior among the general population, focusing on hand-washing habits and the microbial load of hands. Methods: A self-administered questionnaire survey and a separate microbial examination were performed. The Pearson's correlation between hand-washing habits and microbial load was analyzed. Results: In the questionnaire survey on hand-washing habits, gender differences were found in hand-washing frequency, use of hand-washing agents, and hand drying methods (p<0.05). Age differences were found in numbers of washing parts of the hands and also in hand drying methods (p<0.05). Females showed better habits washing hands than did males, as did older people compared to younger. In the microbial examination of indicator bacteria on their hands, younger people tended to show a higher load of total aerobic bacteria than did the older, and females showed a higher load of total coliforms than did males (p<0.05). There were significant relationships between the load of total aerobic bacteria and hand-washing frequency, duration, and method of turning-off water (p<0.05). Conclusions: Although females were expected to show a better practice of hand-washing than were males based on the survey results, they showed a higher level of total coliforms in the hand examination. The older age group showed better hand-washing habits than did the younger age group and had less total aerobic bacteria on their hands. These inter-gender and age differences highlight the need for development and implementation of gender-and age-specific educational programs or campaigns.

• 보건행정학회지
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• 제31권2호
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• pp.225-231
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• 2021

Unmet healthcare is an important indicator to measure accessibility of healthcare services. To examine the latest status of unmet healthcare needs in South Korea, the four different data which is composed of nationally representative sample of South Korean population were used; the Korea Health and Nutrition Examination Survey (KNAHANES, 2007-2019), the Community Health Survey (CHS, 2008-2019), the Korea Health Panel Survey (KHP, 2011-2017), and the Korean Welfare Panel Study (KOWEPS, 2006-2019). The proportion of individuals reporting unmet healthcare needs were 5.8% (KNHANES), 5.3% (CHS), and 11.6% (KHP). Annual percentage change (APC) which identifies trend for the follow-up period was -9.5%, -8.0%, and -6.5%, respectively. The proportion of individuals reporting unmet healthcare needs due to cost were 1.1% (KNAHANES), 0.7% (CHS), 2.4% (KHP), and 0.4% (KOWEPS). The APC was -10.5%, -14.2%, -12.2%, and -19.6%, respectively. Compared to last year, the rate of unmet healthcare needs has declined in general. However, the low-income and the elderly population were reporting the highest rate of unmet health care needs, and the disparity between lowest and highest groups were remained. These results suggest that adequate benefit coverage is needed for low-income and elderly population.