• 자원ㆍ환경경제연구
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• 제13권1호
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• pp.83-117
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• 2004

본 연구는 수도권지역 대기오염 측정망의 오염물질별 연평균 오염도 측정치를 이용하여 최근 10년간의 수도권내 대기오염도의 공간적 분포 및 그 변화를 분석하였다. 분석을 위해 커널확률밀도함수를 추정하고, 또한 지니계수와 엔트로피계열의 불평등지수를 계측하였으며, 분석기간중 오염도의 공간적 분포 변화에 대한 통계적 검정을 실시하였다. 분석결과 최근 10년간 수도권 지역의 $SO_2$, $NO_2$, $O_3$와 CO 등 대기오염물질 오염도의 지역격차는 대체로 일정한 수준을 유지하거나 아니면 완화되는 것으로 나타났다. 또한 순위상관 분석 결과 분석기간 중 오염물질의 공간적 분포에 상당한 정도의 동태적 변화가 있었던 것으로 나타났다.

• Journal of Preventive Medicine and Public Health
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• 제38권3호
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• pp.359-365
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• 2005

Objectives : An abrupt economic decline may widen the socioeconomic differences in health between the advantaged and disadvantaged in a society. The aim of this study was to examine whether the South Korean economic crisis of 1997-98 affected the socioeconomic inequality from all-causes and from cause-specific mortality between 1995 and 2001. Methods : Population denominators were obtained from the registration population data, with the number of death (numerators) calculated from raw death certificate data. The indicator used to assess the geographic socioeconomic position was the per capita regional tax revenue. Administrative districts (Si-Gun-Gu) were ranked according to this socioeconomic measure, and divided into equal population size quintiles on the basis of this ranking. The sex- and 5-year age-specific numbers of the population and deaths were used to compute the sex- and age-adjusted mortality rates (via direct standardization method), standardized mortality ratios (via indirect standardization methods) and relative indices of inequality (RII) (via Poisson regression). Results : Geographic inequalities from all-causes of mortality, as measured by RII, did not increase as a result of the economic crisis (from 1998-2001). This was true for both sexes and all age groups. However, the cause-specific analyses showed that socioeconomic inequalities in mortalities from external causes were affected by South Korean economic crisis. For males, the RIIs for mortalities from transport accidents and intentional self-harm increased between 1995 and 2001. For females, the RII for mortality from intentional self-harm increased during the same period. Conclusions : The South Korean economic crisis widened the geographic inequality in mortalities from major external causes. This increased inequality requires social discourse and counter policies with respect to the rising health inequalities in the South Korean society.

• 보건교육건강증진학회지
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• 제23권2호
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• pp.109-119
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• 2006

Objectives: A number of studies in economically developed countries have shown occurrence of stroke and cardiovascular disease to be inversely related to socioeconomic class. The purpose of this study is to investigate socioeconomic differentials in stroke and cardiovascular disease mortality in Korea. Methods: Two data from two sources, registry data from National Health Insurance Corporation and death certification data from National Statistics Office, were used to calculate mortality rate for five socioeconomic classes. Poisson regression analysis was used to calculate relative indices of inequality as a measure of mortality differentials between socioeconomic classes. Results: For males, graded socioeconomic differentials in mortality were observed with higher mortality rates related to lower socioeconomic class for intracerebral hemorrhage, cerebral infarct, hypertension, ischemic heart disease, myocardial infarct, and arrhythmia. The relative index of inequality for stroke and cardiovascular disease was 1.61(95% CI=1.54-1.68). For females, these differentials were observed for arrhythmia and intracerebral hemorrhage. The relative index of inequality was 1.06(95% CI=1.02-1.11). Conclusions: This socioeconomic differential in mortality, consistent with the results of other studies performed in economically developed countries suggest that Socioeconomic class can influence mortality regardless of the developmental stage of the country.

• Journal of Preventive Medicine and Public Health
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• 제50권5호
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• pp.303-310
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• 2017

Objectives: The aim of this study was to evaluate socioeconomic inequalities in the prevalence of dental caries among an urban population. Methods: This study was conducted among 2000 people 15-40 years of age living in Kurdistan, Iran in 2015. Using a questionnaire, data were collected by 4 trained dental students. The dependent variable was the decayed, missing, and filled teeth (DMF) index. Using principal component analysis, the socioeconomic status (SES) of families was determined based on their household assets. Inequality was measured using the concentration index; in addition, the Oaxaca analytical method was used to determine the contribution of various determinants to the observed inequality. Results: The concentration index for poor scores on the DMF index was -0.32 (95% confidence interval [CI], -0.40 to -0.36); thus, poor DMF indices had a greater concentration in groups with a low SES (p<0.001). Decomposition analysis showed that the mean prevalence of a poor DMF index was 43.7% (95% CI, 40.4 to 46.9%) in the least privileged group and 14.4% (95% CI, 9.5 to 9.2%) in the most privileged group. It was found that 85.8% of the gap observed between these groups was due to differences in sex, parents' education, and the district of residence. A poor DMF index was less prevalent among people with higher SES than among those with lower SES (odds ratio, 0.31; 95% CI, 0.19 to 0.52). Conclusions: An alarming degree of SES inequality in oral health status was found in the studied community. Hence, it is suggested that inequalities in oral health status be reduced via adopting appropriate policies such as the delivery of oral health services to poorer groups and covering such services in insurance programs.

• Journal of Preventive Medicine and Public Health
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• 제51권5호
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• pp.219-226
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• 2018

Objectives: This study aimed to explain the health-related quality of life (HRQoL) gap between the poorest and the wealthiest quintiles in the capitals of Kermanshah and Kurdistan Provinces (Kermanshah and Sanandaj), in western Iran. Methods: This was a cross-sectional study conducted among 1772 adults. Data on socio-demographic characteristics, socioeconomic status (SES), lifestyle factors, body mass index, and HRQoL of participants were collected using a self-administered questionnaire. The slope and relative indices of inequality (SII and RII, respectively) were employed to examine socioeconomic inequality in poor HRQoL. Blinder-Oaxaca (BO) decomposition was used to quantify the contribution of explanatory variables to the gap in the prevalence of poor HRQoL between the wealthiest and the poorest groups. Results: The overall crude and age-adjusted prevalence of poor HRQoL among adults was 32.0 and 41.8%, respectively. The SII and RII indicated that poor HRQoL was mainly concentrated among individuals with lower SES. The absolute difference (%) in the prevalence of poor HRQoL between the highest and lowest SES groups was 28.4. The BO results indicated that 49.9% of the difference was explained by different distributions of age, smoking behavior, physical inactivity, chronic health conditions, and obesity between the highest and lowest SES groups, while the remaining half of the gap was explained by the response effect. Conclusions: We observed a pro-rich distribution of poor HRQoL among adults in the capitals of Kermanshah and Kurdistan Provinces. Policies and strategies aimed at preventing and reducing smoking, physical inactivity, chronic health conditions, and obesity among the poor may reduce the gap in poor HRQoL between the highest and lowest SES groups in Iran.

• Yonsei Medical Journal
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• 제59권9호
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• pp.1034-1040
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• 2018

Purpose: This study aimed to investigate inequalities in colorectal cancer (CRC) screening rates in Korea and trends therein using the slope index of inequality (SII) and relative index of inequality (RII) across income and education groups. Materials and Methods: Data from the Korean National Cancer Screening Survey, an annually conducted, nationwide cross-sectional survey, were utilized. A total of 17174 men and women aged 50 to 74 years were included for analysis. Prior experience with CRC screening was defined as having either a fecal occult blood test within the past year or a lifetime colonoscopy. CRC screening rates and annual percentage changes (APCs) were evaluated. Then, SII and RII were calculated to assess inequality in CRC screening for each survey year. Results: CRC screening rates increased from 23.4% in 2005 to 50.9% in 2015 (APC, 7.8%; 95% CI, 6.0 to 9.6). Upward trends in CRC screening rates were observed for all age, education, and household income groups. Education inequalities were noted in 2009, 2014, and overall pooled estimates in both indices. Income inequalities were inconsistent among survey years, and overall estimates did not reach statistical significance. Conclusion: Education inequalities in CRC screening among men and women aged 50 to 74 years were observed in Korea. No apparent pattern, however, was found for income inequalities. Further studies are needed to thoroughly outline socio-economic inequalities in CRC screening.

• 이베로아메리카
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• 제21권1호
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• pp.159-206
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• 2019

The objective of the article is to describe the social structure of Uruguay at the beginning of the sixties, presenting the social differences that configured the level of urban centers or localities since the beginning of the 20th century. The willing is to identify what historical processes would have intervened to have institutionalized a highly heterogeneous distribution of welfare in the territory. The sources of information are four: (i) the population censuses of 1908 and 1963; (ii) the agricultural censuses of 1908, 1951, 1956 and 1961; (iii) the work of historical demography; and (iv) the indices published by the General Directorate of Statistics and Censuses in 1971 and 1989. Due to the lack of a dictionary of the localities, the authors matched these sources. The regional configuration processes analyzed here are: the departmentalization of the territory; the agriculturization; the industrialization and the balnearización. In each case, the regional and local impact of the political, economic and social transformation is analyzed. The article dedicate a wide space to describe the changes in the entity, the legal status, the territorial distribution and the wellbeing of the localities, marking especially those under 1500 inhabitants, which make up an important micro-urbanization of the country. The foundation of 70% of the localities occurred during the reformist period that locates that project as a type of "social democratic" State with its "Bismarkian" type traits. The institutionalization of these territories is based on their precarious and very poor character, the inequality in the most elementary welfare enjoyed by the established towns and cities increases. The processes of spatialization that reconfigured the territory during this time, contributed to the urbanization and population relocation, but in a framework in the political project of the "small model country" did not plan on the territory, the state have no special attention to correct the asymmetries in local welfare distribution structures. We finished with the hypothesis that beyond the social advances of the "Battlista" period, the territorial inequality of opportunities has grown between 1908 and 1963 because the lack of a public planification.

• 한국경제지리학회지
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• 제26권3호
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• pp.289-309
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• 2023

우리나라의 국민건강보험은 빠른 시간에 보편적 의료시스템을 정착시키는데 큰 기여를 했다. 하지만 연령대에 따른 의료서비스의 차이는 지속되고 있으며, 내과, 가정의학과, 소아청소년과와 같은 핵심의료 서비스에서 이러한 불평등이 존재하는 것은 큰 우려를 불러일으킬 수 밖에 없다. 진료기관 접근에 대한 불평등은 연령대만이 아니라 지역, 특히 도시와 농촌 사이에도 크게 나타나고 있다. 본 연구는 1995년부터 2021년까지 초기진료기관의 분포를 이용하여 변화하는 경제환경 속에서 의료서비스의 공간적 불평등이 어떻게 변화되어 왔는지를 살핀다. 다양한 불평등 지수와 공간통계분석의 결과를 토대로 볼 때, 1997년 IMF 경제위기, 2008년 금융위기, 그리고 2020년의 COVID-19 공중보건 위기를 겪으며 불평등이 심화 확대된 것을 확인할 수 있었다. 또한 초기의료기관의 불균등 분포에 큰 변화가 온 시기도 밝혀낼 수 있었는데, 이러한 변화에는 유소년이나 전체 인구 분포보다는 고령인구의 분포가 큰 역할을 하고 있었다. 본 연구결과는 인구와 의료서비스의 공간적 분포를 통합적으로 고려하여 핵심적인 의료자원의 불평등을 해소하기 위한 노력이 절실히 필요하다는 것을 강조한다. 특히 이러한 노력은 미래의 경제적 충격에도 적절한 수준의 의료 서비스를 지속할 수 있는 기반이 될 수 있을 것이다.

• Structural Engineering and Mechanics
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• 제55권1호
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• pp.229-244
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• 2015

H-infinity norm relates to the maximum in the frequency response function and H-infinity control method focuses on the case that the vibration is excited at the fundamental frequency, while 2-norm relates to the output energy of systems with the input of pulses or white noises and 2-norm control method weighs the overall vibration performance of systems. The trade-off between the performance in frequency-domain and that in time-domain may be achieved by integrating two indices in the mixed vibration control method. Based on the linear fractional state space representation in the modal space for a piezoelectric flexible structure with uncertain modal parameters and un-modeled residual high-frequency modes, a mixed dynamic output feedback control design method is proposed to suppress the structural vibration. Using the linear matrix inequality (LMI) technique, the initial populations are generated by the designing of robust control laws with different H-infinity performance indices before the robust 2-norm performance index of the closed-loop system is included in the fitness function of optimization. A flexible beam structure with a piezoelectric sensor and a piezoelectric actuator are used as the subject for numerical studies. Compared with the velocity feedback control method, the numerical simulation results show the effectiveness of the proposed method.

• 한국노년학
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• 제25권2호
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• pp.73-93
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• 2005

본 연구는 현 한국 노년층 세대의 특성과 노년에 대한 제도적 대응의 한계에도 불구하고 노년층 내의 경제적 불평등이 유의미한 함의를 갖는지, 그리고 경제활동기의 경제적 지위획득과 연관된 요인들이 노년기의 경제적 지위유지를 설명하는 요인인지를 조사하였다. 특히 본 연구는 한국사회에서 노년에 대한 국가적 지원이 크게 부족한 상황에서 한국노인의 경제적 지위와 관련하여 가족이 어떠한 역할을 수행하는지를 조사하였다. 경로모형 분석결과는 경제활동기의 경제적 지위획득과 관련된 요인들이 여전히 노년기의 경제적 지위를 설명하는 유의미한 요인들임을 보여준다. 노년층 내부에 존재하는 경제적 불평등의 정도와 관련하여 포괄소득으로부터 계산된 지니지수와 타일지수는 현 노년층 내의 경제적 불평등이 높은 수준이며, 연령이 증가함에 따라 상승하는 경향을 보여준다. 하지만 포괄소득을 구성하는 두 하위유형 소득 - 시장형 소득과 가족형 소득 - 은 서로 상반된 경향을 보여준다. 시장에 기초한 소득의 경우 불평등 수준은 연령의 상승에 따라 급격히 상승하는데 반하여 가족에 기초한 소득의 경우 연령이 증가함에 따라 점증적으로 감소하는 경향을 보여준다. 세대간 경제적 지원의 역할과 관련하여 분석결과는 사회인구학적으로 불리한 속성을 보유한 노인들에게 가족에 기초한 세대간 경제적 도움제공은 노년기에 중요한 경제적 자원의 역할을 수행하고 있음을 시사한다. 마지막으로 본 분석결과를 기초로 한국사회에 있어서 세대간 경제적 지원의 잠재성과 현재성 사이의 전환에 대한 함의가 논의되었다.