Estudo da mortalidade infantil nos estados brasileiros utilizando aplicação de dados em painel / Study of child mortality in brazilian states using panel data application / Estudio de mortalidad infantil en estados brasileños mediante aplicación de datos de panel

Este trabalho tem como objetivo determinar uma relação linear entre a Taxa de Mortalidade Infantil (TMI) e um conjunto de variáveis socioeconômicas observadas por unidades federativas no período de 2005 à 2010 utilizando o modelo de dados em painel de efeitos fixo e aleatório. Metodologia: trata-se de um estudo descritivo com abordagem quantitativa, com utilização dos Sistema de Informação sobre Mortalidade (SIM) e o Sistema de Informações sobre Nascidos Vivos (SINASC) e em seguida utilizou-se o software R para realizar esta análise de dados com a função plm. Resultados: os estudos mostram que o modelo mais adequado é o de efeito fixo com transformação logarítmica nas variáveis independentes e na variável dependente que foram as seguintes: TMI, taxa de analfabetismo, PIB per capita, proporção pessoas com baixa renda, percentual da população servida por rede de abastecimento de água e a proporção da população servida por coleta de lixo. Conclusão: As variáveis independentes que causam impacto significativo na TMI são taxa de analfabetismo, PIB per capita e proporção de pessoas com baixa renda.

This work aims to determine a linear relationship between the Infant Mortality Rate (IMR) and a set of socioeconomic variables observed by federative units in the period from 2005 to 2010 using the fixed and random effects panel data model. Methodology: this is a descriptive study with a quantitative approach, using the Mortality Information System (SIM) and the Live Birth Information System (SINASC) and then using the R software to perform this data analysis with the plm function. Results: studies show that the most appropriate model is the fixed effect model with logarithmic transformation in the independent variables and the dependent variable, which were as follows: IMR, illiteracy rate, GDP per capita, proportion of people with low income, percentage of the population served by water supply network and the proportion of the population served by garbage collection. Conclusion: The independent variables that have a significant impact on IMR are the illiteracy rate, GDP per capita and the proportion of people with low income.

Este trabajo tiene como objetivo determinar una relación lineal entre la Tasa de Mortalidad Infantil (TMI) y un conjunto de variables socioeconómicas observadas por las unidades federativas en el período 2005 a 2010 utilizando el modelo de datos de panel de efectos fijos y aleatorios. Metodología: se trata de un estudio descriptivo con enfoque cuantitativo, utilizando el Sistema de Información de Mortalidad (SIM) y el Sistema de Información de Nacidos Vivos (SINASC) y luego utilizando el software R para realizar este análisis de datos con la función plm. Resultados: los estudios muestran que el modelo más adecuado es el modelo de efectos fijos con transformación logarítmica en las variables independientes y la variable dependiente, las cuales fueron las siguientes: TMI, tasa de analfabetismo, PIB per cápita, proporción de personas con bajos ingresos, porcentaje de la población atendida por red de suministro de agua y la proporción de la población atendida por recolección de basura. Conclusión: Las variables independientes que tienen un impacto significativo en la TMI son la tasa de analfabetismo, el PIB per cápita y la proporción de personas con bajos ingresos.

Factors Affecting Stunting in Children under 5 Years of Age in Indonesia using Spatial Model

Background: Stunting in children under 5 years of age is a condition where they have a length or height that is less than ?2 standard deviations of the growth standard of Indonesian children. Stunting is caused by chronic malnutrition in the first 1000 days of life. The spatial panel data method was developed to solve problems related to spatial objects that are measured periodically by involving elements of area and time. Objectives: The purpose of this study was to determine the best model and factors that influence stunting in children under 5 years of age in Indonesia using spatial panel data. Methods: The data used were from the website of the Central Statistics Agency and the publications of the Ministry of Health of the Republic of Indonesia in 2015–2019. Determination of the selected model is done by comparing the random effect spatial autoregressive model and spatial error model (SEM) random effect based on the value and Akaike information criterion (AIC). SEM random effect produces the largest value and the smallest AIC. Results: The selected spatial panel data model in determining the factors that influence stunting in children under 5 years of age in Indonesia is the SEM random effect based on the largest and AIC compared to other models. Conclusion: Based on the selected model, children under five with malnutrition and poor nutrition, receiving Vitamin A, and the average monthly per capita expenditure on food have a significant effect on the percentage of stunting in children under five in Indonesia.

Temporal trend and contributing factors of depressive symptoms in Chinese menopausal women: analysis based on CHARLS panel data / 南方医科大学学报

OBJECTIVE@#To understand the temporal trend of and the factors affecting depressive symptoms in Chinese menopausal women to provide evidence for the development of prevention and treatment strategies.@*METHODS@#CHARLS data were used to select menopausal women aged 45-60 years. Complete values of the key variables were screened and missing values were removed to obtain the cross-sectional data of the years 2011 (n=4318), 2013 (n=4200), 2015 (n=3930), and 2018 (n= 4147). The panel data were matched by the cross-sectional data, and a total of 5040 cases with complete record of the follow-up data were obtained for the 4 years to constitute a balanced short panel dataset with n=1260 and T=4. The prevalence and temporal trend of depressive symptoms in the menopausal women were analyzed based on the panel data. The random-effects Logit model with a panel dichotomous choice model was used to explore the factors affecting depressive symptoms in the menopausal women.@*RESULTS@#The prevalence of depressive symptoms in the menopausal women calculated based on the panel data was 35.9%, 33.1%, 36.7% and 43.7% in the 4 years, respectively, showing no statistically significant changes in the temporal trend (APC=3.25%, P=0.183). The results of the random-effects Logit model analysis showed that living in the urban area (OR=0.570, 95%CI: 0.457-0.710), a high education level (OR=0.759, 95%CI: 0.655-0.879), and having a spouse (OR=0.363, 95% CI: 0.236-0.558) were associated with a decreased incidence of depressive symptoms, while poor self-reported health (OR= 2.704, 95% CI: 2.152-3.396), disability (OR=1.457, 95%CI: 1.087-1.954), chronic disease (OR=1.407, 95% CI: 1.179-1.680), falls in the last two years (OR=2.028, 95% CI: 1.613-2.550), abnormal sleep duration (OR=2.249, 95% CI: 1.896-2.664), and dissatisfaction with life (OR=4.803, 95% CI: 3.757-6.140) were associated with an increased incidence of depressive symptoms.@*CONCLUSION@#The prevalence of depressive symptoms is relatively high in menopausal women in China. Measures should be taken to ensure that the menopausal women living in rural areas, with low education level, without spouse, with a poor self-reported health status, disability, chronic diseases, falls in recent two years, abnormal sleep time and dissatisfaction with life have access to psychological health care services and interventions.

Factors affecting the price of raw milk in Turkey using panel data analysis / Fatores que afetam o preço do leite cru na Turquia usando análise de dados em painel

ABSTRACT: The high costs of feed among the total costs of raw milk production and an unfavorable milk-feed ratio directly affect the profitability of milk producers. To understand how the market in Turkey can be equilibrated, an exploration of the factors affecting milk prices is essential. This study determined the effects of the basic and the economic indicators on the price of raw milk between 2010 and 2019, by analyzing the monthly panel data. Since time series data are used, Augmented Dickey-Fuller (ADF) and Phillips-Perron (PP) tests are conducted to find out whether the series is stationary. In order to see the individual effects, the parameters are estimated using the fixed and random-effects models. The Hausman test is conducted to decide which of the two models is valid. The basic indicators for milk price, namely, prices of barley, soybean meal, wheat and distillers dried grains with soluble (DDGS), and the economic indicators, namely, dollar exchange rate and agricultural producer price index (PPI) had significant (P < 0.05; P < 0.01) effects on the milk price. In conclusion, it is reported that the raw milk prices in Turkey are considerably affected by the prices of feed ingredients as well as the general economic conditions.

RESUMO: Os elevados custos da ração entre os custos totais para a produção de leite cru e uma relação leite-ração desfavorável afetam diretamente a lucratividade dos produtores de leite. Para entender como o mercado na Turquia pode ser equilibrado, é essencial explorar os fatores que afetam os preços do leite. Este estudo pretende determinar os efeitos dos indicadores básicos e econômicos sobre o preço do leite cru entre 2010 e 2019, por meio da análise de dados em painel mensal. Como os dados de série temporal são usados, os testes de Dickey-Fuller Aumentado (ADF) e Phillips-Perron (PP) são conduzidos para descobrir se a série é estacionária. Para ver os efeitos individuais, os parâmetros são estimados usando os modelos de efeitos fixos e aleatórios. O teste de Hausman é realizado para decidir qual dos dois modelos é válido. Encontram-se os indicadores básicos do preço do leite.Os preços da cevada, farelo de soja, trigo e grãos secos de destilaria com solúveis (DDGS), e os indicadores econômicos. A taxa de câmbio do dólar e o índice de preços ao produtor agrícola (PPI), ter efeitos significativos (P < 0,05; P < 0,01) no preço do leite. Em conclusão, verifica-se que os preços do leite cru na Turquia são consideravelmente afetados pelos preços dos ingredientes para rações, bem como pelas condições económicas gerais.

Nigeria's cocoa exports: a gravity model approach / Exportações de cacau da Nigéria: uma abordagem do modelo gravitacional

ABSTRACT: What are the major factors affecting Nigeria's cocoa export flows? In answering this question, the authors suggest a commodity-specific gravity model with three different analytical approaches, (the Heckman Sample Selection Model, the Generalised Least Square, and the Poisson Pseudo Maximum Likelihood), based on a period of 24 years of panel data for Nigeria and it's 36 importing partners to estimate the models. The results showed that GDP, exchange rate policy, WTO, EU, and colonial link are positively associated with the Nigerian cocoa export flows. Further, the negative impact of the GDP per capita, landlocked, distance, AU, and ECOWAS are observed. The need for the expansion of exports to the trading partners, especially the EU members (Netherlands, Germany, France, United Kingdom, Belgium, Spain, etc.), Canada, Malaysia, and the USA is particularly highlighted. These results are important for the formulation of future trade policy that could boost up the Nigerian cocoa exports. This would eventually contribute to the diversification of the Nigerian exports and also enhance the country's foreign earnings.

RESUMO: Quais são os principais fatores que afetam os fluxos de exportação de cacau da Nigéria? Ao responder a esta pergunta, os autores sugerem um modelo de gravidade específica de mercadoria com três abordagens analíticas diferentes (o Modelo de Seleção de Amostras de Heckman, o Mínimo Quadrado Generalizado e a Pseudo Máxima Verossimilhança de Poisson), com base em um período de 24 anos de dados em painel para a Nigéria e seus parceiros importadores para estimar os modelos. Os resultados mostram que o PIB, a política cambial, a OMC, a UE e a ligação colonial estão positivamente associados aos fluxos de exportação de cacau da Nigéria. Além disso, é observado o impacto negativo do PIB per capita, sem litoral, distância, UA e CEDEAO. Destaca-se a necessidade de ampliação das exportações para os parceiros comerciais, especialmente os membros da UE (Holanda, Alemanha, França, Reino Unido, Bélgica, Espanha, etc.), Canadá, Malásia e Estados Unidos. Esses resultados são importantes para a formulação de uma política comercial futura que possa impulsionar as exportações de cacau nigeriano. Isso acabaria por contribuir para a diversificação das exportações nigerianas e também aumentar as receitas externas do país.

The Influence Factors on the Performance of Regional Public Hospitals / 보건행정학회지

BACKGROUND: This study is designed to estimate the factors that affect the level of three different performance (publicity, efficiency, profitability) among regional public hospitals. METHODS: The units of analysis are the regional 30 hospitals, which have the operating data during 22 years (from 1933 to 2014). The research method is used by fixed panel analysis. The publicity is measured by medicaid outpatient proportion and medicaid inpatient proportion. The efficiency is measured by two types of efficient score by DEA (data envelopment analysis). The profitability is measured by medical income to medical revenue and ROA (return on total asset). RESULTS: At first, the increase of bed gives negative affect to the publicity but give positive effect to the efficiency and profitability. Because it means the increase of the region population, it gives more profitability compare to hospital with small number of beds. The more the operating period is the higher effect to the publicity and efficiency because of it's refutation. The debt ratio gives negative effect to publicity, but positive effect to profitability. It is the normal belief that there is inverse relationship between publicity and profitability. The turnover rate of bed gives the negative affect to the publicity, but positive affect to the efficiency and profitability. That give us the implication that type of the inpatient make different effect the hospital performance. The ratio of labor cost give negative effect to all kind of performance. That means that the higher labor cost don't mean the higher publicity and labor cost control is very important factors to hospital performance. So the region hospital have to focus the labor factors more to make higher performance. CONCLUSION: As the conclusion, the independent variables give similar effect to the efficiency and the profitability, but give inverse effect to the publicity. That means that if an region hospital want to make the more publicity, it loss the higher efficiency and profitability. Specially publicity is higher negative relation with the profitability.

Road traffic safety: An analysis of the cross-effects of economic, road and population factors / 中华创伤杂志(英文版)

PURPOSE@#Through the study of economic, traffic and population data related to road traffic accidents from 2004 to 2016, this paper analyzed the impact of various factors on road traffic casualties in China, and provided theoretical basis and suggestions for the road traffic safety management in China.@*METHODS@#Based on three aspects (economy, road, population) with five factors (gross domestic product (GDP), traffic investment, new vehicle ownership, new road mileage and newly increased population), this paper collected the relevant data of road traffic accidents in 31 provinces and cities in China, from 2004 to 2016. A panel model was established to carry out empirical analysis.@*RESULTS@#All factors have a significant impact on the number of road traffic accident casualties. When other factors remain unchanged, the number of road traffic casualties decreased by an average of 0.19 for every 100 million CNY increased in GDP. For every 100 million CNY increased in traffic investment, the number of road traffic casualties is reduced by an average of 13.93, indicating that economic development can improve road traffic safety to a certain extent. On the contrary, the growth in road mileage, new motor vehicles and population has increased the number of road traffic casualties. For every 10, 000 km of new road mileage, the number of traffic accident casualties has increased by 284.04. For every 10,000 newborns, the number of road traffic casualties increased by 7.33; as the number of new motor vehicles increases by 10,000, the number of road traffic casualties increased by an average of 21.77.@*CONCLUSION@#The increase of GDP and traffic investment can significantly reduce the number of road traffic casualties in China, which shows that economic development is essential to improve road traffic safety. The numbers of new road mileage, newly increased population and the new motor vehicles are positively correlated with the number of traffic accident casualties in traffic accidents, which reflects the existing problems in road design, distribution of road resources, and traffic management in China. Therefore, it is necessary to improve the economic and road related aspects to improve road traffic safety.

Effect of Having a Usual Source of Care on Medical Expenses – Using the Korea Health Panel Data

BACKGROUND: There is a controversy about the effect of having a usual source of care on medical expenses. Although many studies have shown lower medical expenses in a group with a usual source of care, some have shown higher medical expenses in such a group. This study aimed to empirically demonstrate the effect of having a usual source of care on medical expenses. METHODS: The participants included those aged 20 years and older who responded to the questionnaire about “having a usual source of care” from the Korean Health Panel Data of 2012, 2013, and 2016 (6,120; 6,593; and 7,598 respectively). Those who responded with “I do not get sick easily” or “I rarely visit medical institutions” as the reasons for not having a usual source of care were excluded. The panel regression with random effects model was performed to analyze the effect of having a usual source of care on medical expenses. RESULTS: The group having a usual source of care spent 20% less on inpatient expenses and 25% less on clinic expenses than the group without a usual source of care. Particularly, the group having a clinic-level usual source of care spent 12% less on total medical expenses, 9% less on outpatient expenses, 35% less on inpatient expenses, and 74% less on hospital expenses, but 29% more on clinic expenses than the group without a usual source of care. CONCLUSION: This study confirmed that medical expenses decreased in the group with a usual source of care, especially a clinic-level usual source of care (USC), than in the group without a usual source of care. Encouraging people to have a clinic-level USC can control excessive medical expenses and induce desirable medical care utilization.

Analyzing the Impact of the NRCMS Polices on the Utilization of Outpatient Services in Rural Resident Based on the Balanced Panel Data / 中国卫生统计

Objective To analyze the influence of NRCMS polices evolutionon residents’utilizationof outpatient serv-ices.Methods Based on the same individual balance panel data in two years of three counties in Ji＇nan city,we build panel dat-amodel and conductrandom effects of binary choice panel data model,random effects Poisson regression model,difference in differences(DID)model to analyze the influence.Results Our study shows that the four-week consultation rate in 2011 in-creased by 4. 1% compared to 2008.Age,self-ratedhealthstatus,suffering from chronic diseases or not,the distance to the nearest medical institution have an influence on outpatient service utilization.The new rural cooperative medical outpatient reimburse-ment policy has an effect on thefour-week consultation rate of middle-income residents and high-income residents.The NCMS policy tends to benefit middle and high-income groups.Conclusion we should increase NCMS outpatient compensation level of low-income residents appropriately.

The Analysis on the Influence Factors of Commercial Health Insurance Demand Based on the Model of Cross-sectional Fixed Effect / 中国卫生经济

Objective:To analyze the main influencing factors of China's commercial health insurance demand and promote the development of China's health service industry.Methods:Based on the panel data of 31 provinces and cities in China from 2009 to 2015,the model of cross-sectional fixed effect was constructed to conduct empirical analysis on the main influencing factors of China's commercial health insurance demand.Result and Conclusion:More significant influences on commercial health insurance demand factors were urban per capita disposable income,per capita urban employee basic medical insurance fund income,elderly population bring-up ratio and per capita outpatient expenses.For the basic medical insurance of urban employees,the urban employee medical insurance had significant effect on the demand of commercial health insurance.For the basic medical insurance of urban residents,the income impact was more prominent.The proportion of graduates of general institutions of higher learning had few influence commercial health insurance.

Study on influence of floods on bacillary dysentery incidence in Liaoning province, 2004-2010 / 中华流行病学杂志

Objective To understand the influence of floods on bacillary dysentery in Liaoning province.Methods The monthly surveillance data of bacillary dysentery,floods,meteorological and demographic data in Liaoning from 2004 to 2010 were collected.Panel Poisson regression analysis was conducted to evaluate the influence of floods on the incidence of bacillary dysentery in Liaoning.Results The mean monthly morbidity of bacillary dysentery was 2.17 per 100 000 during the study period,the bacillary dysentery cases mainly occurred in during July-September.Spearman correlation analysis showed that no lagged effect was detected in the influence of floods on the incidence of bacillary dysentery.After adjusting the influence of meteorological factors,panel data analysis showed that the influence of floods on the incidence of bacillary dysentery existed and the incidence rate ratio was 1.439 4 (95％CI:1.408 1-1.471 4).Conclusion Floods could significantly increase the risk of bacillary dysentery for population in Liaoning.

Study on influence of floods on bacillary dysentery incidence in Liaoning province, 2004-2010 / 中华流行病学杂志

Objective To understand the influence of floods on bacillary dysentery in Liaoning province.Methods The monthly surveillance data of bacillary dysentery,floods,meteorological and demographic data in Liaoning from 2004 to 2010 were collected.Panel Poisson regression analysis was conducted to evaluate the influence of floods on the incidence of bacillary dysentery in Liaoning.Results The mean monthly morbidity of bacillary dysentery was 2.17 per 100 000 during the study period,the bacillary dysentery cases mainly occurred in during July-September.Spearman correlation analysis showed that no lagged effect was detected in the influence of floods on the incidence of bacillary dysentery.After adjusting the influence of meteorological factors,panel data analysis showed that the influence of floods on the incidence of bacillary dysentery existed and the incidence rate ratio was 1.439 4 (95％CI:1.408 1-1.471 4).Conclusion Floods could significantly increase the risk of bacillary dysentery for population in Liaoning.

A Panel Study on the Effect of Obesity and the Chronic Diseases on the Health Care Expenditures / 보건행정학회지

We analyze the determinants of obesity and the chronic diseases using the Korea Health Panel data. Also we analyze the effect of obesity and the chronic diseases on the health care expenditures. Through this study, to reduce the health care expenditures, we suggest the policy implication that might curb the obesity and the chronic diseases. We estimate the determinants of obesity, the chronic diseases, and the health care expenditures using 2SLS (two stage least squares) estimation method under the simultaneous equations framework. Result says that obesity and chronic diseases significantly have positive effects on the health care expenditures. Also the determinants of the health care expenditures that have positive effects are age, income and health care utilization variables.

An Analysis on the Determinants of Efficiency of the Pharmaceutical Firms using Stochastic Frontier Analysis / 보건행정학회지

BACKGROUND & METHODS: The purpose of this research is to estimate the efficiency of the pharmaceutical firms and the determinants of their efficiency. Stochastic frontier analysis(SFA) and panel study are applied to the data of 60 domestic pharmaceutical firms from 2006 to 2012. RESULTS & CONCLUSION: First, the result of the stochastic frontier analysis shows that overall efficiency of the pharmaceutical firms is increasing as time goes by. However, if firms are classified by the scale, the larger firms show more efficiency and if classified by the degree of innovativeness, the innovative firms show more efficiency compared to the non-innovative firms. This evidences show that the scale and R&D investment have significant relationships with the efficiency of the pharmaceutical firms. Therefore, it is necessary to increase the national level of investment for the fundamental researches to vitalize R&D of the new drugs. Second, the result of estimation of the determinants of efficiency shows that the firms with larger sales promotion expenses and entertainment expenses have less efficiency compared to the other firms. This can be explained by the structural characteristics of the small generic pharmaceutical firms. Therefore, the government had better make the pharmaceutical firms to reduce sales promotion and entertainment expenses and increase R&D expenses by introducing systems such as global budgeting system on medicine or reference pricing system.

Pobreza, violeniia y desarrollo económico en laprovincia de sugamuxi: un análiisis para el periodo 2000-2010 / Povrty, violencee and economic development in the povince of sugammuxi: an analysis for the period 2000-2010 (t0) / Poreza, violênciia e desenvolvimento económico na rovíncia de suggamuxi: uma análise para o período de 2000-2010

Esta investigación tiene como objetivo analizar los determinantes de la violencia que inciden sobre el desarrollo económico de los municipios de la provincia de Sugamuxi para el período 2000-2010. La metodología utilizada se basó en la construcción de un modelo de datos panel dinámico, con diferentes estimaciones que capturan los efectos y la evolución del capital humano, la incidencia de la producción per cápita, las variables de la violencia, la pobreza y sus diferentes efectos sobre el desarrollo económico de los municipios. Se encontró que los diferentes modelos estimados corroboran la hipótesis de que la violencia tiene incidencia negativa sobre el desarrollo económico de los municipios de la provincia de Sugamuxi, lo que corrobora la evidencia y los efectos de la violencia sobre el desarrollo. Los resultados sugieren que las diferentes formas de violencia tienen efectos perversos sobre el desarrollo, mientras que los diferentes niveles de educación inciden positivamente sobre el desarrollo económico de los municipios.

This research has as objective to analyze the determinants of violence that have an impact on the economic development of the municipalities of the Sugamuxi province between 2000 and 2010. The methodology used was based in the construction of a datummodel dynamic panel, with different estimates that capture the effects and evolution of human capital, the production influence per capita, the violence variables, the poverty and its different effects over the economic development of the municipalities. It was found that the different estimated models confirm the hypothesis that violence has a negative influence on the economic development of the municipalities of the Sugamuxi province, which corroborate the evidence and the effects of violence over development. The results suggest that the different ways of violence have perverse effects on the development; meanwhile the different levels of education have a positive impact on the economic development of the municipalities.

Esta pesquisa tem como objetivo fazer uma análise dos determinantes da violência que afetam o desenvolvimento econômico dos municípios da província de Sugamuxi para o período de 2000-2010. A metodologia usada foi baseada na construção de um modelo de dados em painel dinâmico, com diferentes estimativas que pegam os efeitos e a evolução do capital humano, a incidência da produção per cápita, as variáveis da violência, a pobreza e seus diversos efeitos sob o desenvolvimento económico dos municípios. Achou-se que nos diferentes modelos estimados corroboram a hipótese de que a violência tem uma incidência negativa sobre o desenvolvimento econômico dos municípios da província de Sugamuxi, corroborando a evidência e os efeitos da violência sobre o desenvolvimento. Os resultados sugerem que as diferentes formas de violência têm efeitos perversos sobre o desenvolvimento, enquanto que os diferentes níveis de ensino têm um impacto positivo sobre o desenvolvimento econômico dos municípios.

Empirical Study on Determinants and Potentialities of Exportation of Chinese Traditional Patent Medicines to the EU / 世界科学技术-中医药现代化

In order to analyze main influencing factors of exportation of Chinese traditional patent medicines to the EU and measure the potentialities, the panel data of the exportation of Chinese traditional patent medicines to 13 countries in the EU over the period from 2000 to 2011 were used to build a regression model. Then, this model was applied to estimate the export potentialities. The results showed that the GDPs of China and EU countries, the export prices of Chinese traditional patent medicines, the port capacities of EU countries and maritime distances between ports of two countries notably promote export trade. At the same time, unified standards of pesticide residue analysis are associated with reducing the volume of export trade. EU countries can be divided into two groups. One is the group with certain potentiality. The other is the group without ready potentiality. Suggestions were made on basis of research results in order to promote exportation of Chinese traditional patent medicines to the EU.

Analysis on the Urban-Rural Difference Impact of Aging on Health Care Expenditure / 中国卫生经济

Objective: To study the urban and rural difference impacts of aging on health care expenditure. Methods: Using 2002-2011 panel data of 31 provinces throughout the country to build fixed effect models for the urban and rural areas and make comparative analysis. Results: For urban and rural areas, there are significant differences in the impact of aging on health care expenditure, the estimated coefficients are 0.13 and 0.48 respectively. Conclusion:Under the background of the aging process, it needs to strengthen the construction of rural medical insurance system in China, increase financial support and rural health resource allocation.

Typhoid and paratyphoid fever in Yunnan province: distributional patterns and the related meteorological factors / 中华流行病学杂志

Objective To characterize the spatial distribution of typhoid and paratyphoid fever(TPF)in Yunnan province, China and to determine the effectiveness of meteorological factors on the epidemics of TPE Methods Data of reported TPF cases in Yunnan province(2001 -2007)from the China Information System for Diseases Control and Prevention was applied to GIS-based spatial analyses to detect their spatial distribution and clustering of TPF incidence at the county level.Panel data analysis was used to identify the relationships between the TPF incidence and meteorological factors including monthly average temperature, monthly cumulative precipitation and monthly average relative humidity. Results During the study period, the average incidence of TPF in Yunnan province was 23.11/100 000, with majority of the TPF cases emerged in summer and autumn. Although widely distributed, two TPF clusters were detected in Yunnan province based on the spatial analysis:one area around Yuxi city with the average annual incidence as 207.45/100 000 and another at the junctions of Yunnan province with Burma and Laos. Based on results from panel data analysis, the incidence of TFP was shown to be associated with meteorological factors such as temperature,precipitation, relative humidity and one month lag of temperature increase [10 ℃ increase in the monthly average temperature:IRR=1.30(95%CI: 1.24-1.36);10% increase in monthly average relative humidity:IRR= 1.07(95%CI: 1.05-1.09); 100 mm rise in monthly cumulative precipitation:IRR=1.02(95%CI: 1.00-1.03); and 10 ℃ average temperature increase, the last month: IRR=1.73(95%CI: 1.64-1.82)]. Conclusion Areas with high TPF incidence were detected in this study,which indicated the key areas for TPF control in Yunnan province. Meteorological factors such as temperature, precipitation and humidity played a role in the incidence of TPF.

Panel data-based study on economy of scale in military hospitals / 第二军医大学学报

Objective: To measure the economic scale of military hospitals locating to the north of Central China. Methods: We collected the 2005-2007 panel data of 57 military hospitals in 3 different regions, and there were 171 observations. These data were used to estimate the total variable cost function by fixed effected model. The coefficient estimates were used to calculate the economic scale of hospitals of different categories. Results: The general hospitals with 891-1 230 beds showed economy of scale, those with more than 1 300 beds displayed diseconomy of scale. There was no obvious relation between beds and scale economy for the numbered hospitals. Conclusion: Larger market scale and disposition of administrative resources lead to economy of scale on expanded level in the general hospitals. Scale is not the determining factor; optimized allocation of resources, division of labor, and rational specialization are important for economy of scale.

Empirical study on the economies of scope of military hospitals based on panel data / 第二军医大学学报

Objective: To measure the economies of scope of military hospitals in China. Methods: We collected the panel data of 2005 to 2007 from 57 military hospitals, based on which we constructed the pooled regression model and time fixed effect regression model. The best cost function model was selected according to the result of hypothesis testing, and the model of economies of scope was constructed according to the conception of economies of scope. Then the parameters were estimated by econometric methods, and the coefficient estimates were used to calculate the economies of scope of hospitals of each category. Results: The hypothesis testing results of the two models showed that the pooled regression model was superior to the time fixed effect model. All the military hospitals included in the present study showed economies of scope; the larger and higher level the hospitals, the stronger economies of scope was. Conclusion: Large-scale hospitals can achieve better economies of scope by developing highly relevant main bussiness.