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      The cost of connecting poor households to natural gas in Colombia and its impact on health, 2007 Translated title: Impacto en la salud y el costo de conexión de gas natural domiciliario en los hogares pobres en Colombia, 2007

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          Abstract

          Objective Assessing the cost of subsidizing access to household natural gas (HNG) and its impact on the health of about 35,000 poor households (socioeconomic strata 1 and 2) in Colombia, sponsored by a Global Partnership on Output-Based Aid (GPOBA) project. Methods The following studies were combined: an analysis of secondary data and analysis of databases provided by the Promigas foundation, demographic data from the 2005 DANE census and databases regarding Central Bank economic statistical series; an analysis of the burden of disease estimated from parameters identified in previous studies; an analysis of the cost of the burden of illness and the estimated costs which were avoided by implementing the HNG connections program; and an analysis of the cost effectiveness of the program linking homes to HNG services. Results The OBA project led to about 4,000 to 5,000 cases of acute respiratory disease (ARD) and 1,200 to 2,300 outpatient cases of chronic obstructive pulmonary disease (COPD) being avoided during the study period; around 1,200 hospitalizations due to ARD and 500 due to COPD were also avoided. Forty-five to 170 deaths (representing about 45,000 to 90,000 disability-adjusted life years (DALY)) were also avoided. The economic cost of the burden of disease arising from ARI and COPD in such scenario without HNG would have been between 10.7 and 23.6 million dollars, whilst HNG led to costs becoming reduced by about 32 %. Conclusions This study was a good estimator of the potential impact of the poorest and most vulnerable households gaining universal access to HNG.

          Translated abstract

          Objetivo Valorar el impacto sanitario y económico de subsidiar el acceso al Gas Natural Domiciliario (GND) a hogares pobres (estratos socioeconómicos 1 y 2) en Colombia, auspiciado por Global Partnership on Output Based Aid (GPOBA), proyecto OBA. Métodos Se combinaron los siguientes estudios: a) Análisis de bases de datos secundarios tomadas de Fundación Promigas, censo DANE 2005, y series estadísticas del Banco de la República b) Análisis de carga de enfermedad estimada a partir de los parámetros de estudios previos c) Análisis de costos de la carga de enfermedad estimada y de los costos evitados luego de implementado el programa de conexiones de GND d) Análisis de costo efectividad del programa de conexiones de los hogares al servicios de GND. Resultados La presencia del proyecto OBA evitaría, durante el periodo de estudio, cerca de 4 mil y 5 mil casos ambulatorio de IRA y entre 1 200 y 2 300 de EPOC. Además, se evitarían cerca de 1200 hospitalizaciones por IRA y cerca de 500 por EPOC. Igualmente se evitaría entre 45 y 170 muertes que representaría cerca de 45 mil a 90 mil AVAD. Los costos económicos de la carga de enfermedad por IRA y EPOC en el escenario sin GND serían entre 10,7 y 23,6 millones de dólares mientras que con GND los costos se reducirían en cerca de un 32 %. Conclusiones El presente estudio es un buen estimador de los potenciales efectos de la universalización del acceso al GND por parte de los hogares más pobres y vulnerables.

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          Most cited references54

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          Indoor air pollution in developing countries: a major environmental and public health challenge

          Around 50% of people, almost all in developing countries, rely on coal and biomass in the form of wood, dung and crop residues for domestic energy. These materials are typically burnt in simple stoves with very incomplete combustion. Consequently, women and young children are exposed to high levels of indoor air pollution every day. There is consistent evidence that indoor air pollution increases the risk of chronic obstructive pulmonary disease and of acute respiratory infections in childhood, the most important cause of death among children under 5 years of age in developing countries. Evidence also exists of associations with low birth weight, increased infant and perinatal mortality, pulmonary tuberculosis, nasopharyngeal and laryngeal cancer, cataract, and, specifically in respect of the use of coal, with lung cancer. Conflicting evidence exists with regard to asthma. All studies are observational and very few have measured exposure directly, while a substantial proportion have not dealt with confounding. As a result, risk estimates are poorly quantified and may be biased. Exposure to indoor air pollution may be responsible for nearly 2 million excess deaths in developing countries and for some 4% of the global burden of disease. Indoor air pollution is a major global public health threat requiring greatly increased efforts in the areas of research and policy-making. Research on its health effects should be strengthened, particularly in relation to tuberculosis and acute lower respiratory infections. A more systematic approach to the development and evaluation of interventions is desirable, with clearer recognition of the interrelationships between poverty and dependence on polluting fuels.
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            Does biofuel smoke contribute to anaemia and stunting in early childhood?

            Reliance on biomass fuels for cooking and heating exposes many women and young children in developing countries to high levels of air pollution indoors. Exposure to biomass smoke has been linked to reduced birth weight, acute respiratory infections, and childhood mortality. This study examines the association between household use of biofuels (wood, dung, and crop residues) for cooking and heating and prevalence of anaemia and stunting in children. Data are from a 1998-99 national family health survey in India, which measured height, weight, and blood haemoglobin of 29 768 children aged 0-35 months in 92 486 households. Multinomial logistic regression is used to estimate the effects of biofuel use on prevalence of anaemia and stunting, controlling for exposure to tobacco smoke, recent episodes of illness, maternal education and nutrition, and other potentially confounding factors. Analysis shows that prevalence of moderate-to-severe anaemia was significantly higher among children in households using biofuels than among children in households using cleaner fuels (RRR = 1.58; 95% CI: 1.28, 1.94), independent of other factors. Prevalence of severe stunting was also significantly higher among children in biofuel-using households (RRR = 1.84; 95% CI: 1.44, 2.36). Thirty-one per cent of moderate-to-severe anaemia and 37% of severe stunting among children aged 6-35 months in India may be attributable to exposure to biofuel smoke. Effects on mild anaemia and moderate stunting were smaller, but positive and statistically significant. Effects of exposure to tobacco smoke on anaemia and stunting were small and not significant. The study provides a first evidence of the strong association between biofuel use and risks of anaemia and stunting in children, suggesting that exposure to biofuel smoke may contribute to chronic nutritional deficiencies in young children.
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              Quantifying the effects of exposure to indoor air pollution from biomass combustion on acute respiratory infections in developing countries.

              Acute respiratory infections (ARI) are the leading cause of burden of disease worldwide and have been causally linked with exposure to pollutants from domestic biomass fuels in developing countries. We used longitudinal health data coupled with detailed monitoring and estimation of personal exposure from more than 2 years of field measurements in rural Kenya to estimate the exposure-response relationship for particulates < 10 microm diameter (PM(10)) generated from biomass combustion. Acute respiratory infections and acute lower respiratory infections are concave, increasing functions of average daily exposure to PM(10), with the rate of increase declining for exposures above approximately 1,000-2,000 microg/m(3). This first estimation of the exposure-response relationship for the high-exposure levels characteristic of developing countries has immediate and important consequences for international public health policies, energy and combustion research, and technology transfer efforts that affect more than 2 billion people worldwide.

                Author and article information

                Journal
                rsap
                Revista de Salud Pública
                Rev. salud pública
                Instituto de Salud Publica, Facultad de Medicina - Universidad Nacional de Colombia (Bogotá, DF, Colombia )
                0124-0064
                February 2012
                : 14
                : 1
                : 28-40
                Affiliations
                [01] orgnameUniversidad de Cartagena orgdiv1Departamento de Investigaciones Económicas y Sociales-DIES Colombia
                [02] orgnameUniversidad de Cartagena orgdiv1Facultad de Medicina Colombia
                [03] Bogotá orgnameUniversidad Nacional de Colombia orgdiv1Facultad de Medicina orgdiv2Departamento de Salud Pública fpdelahozr@ 123456unal.edu.co
                Article
                S0124-00642012000100003 S0124-0064(12)01400103
                667d1011-d770-4ea7-acc7-07e9a955cbb6

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 06 February 2011
                : 11 November 2011
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 13
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                SciELO Public Health

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                Categories
                Articles/Research

                Enfermedades respiratorias,enfermedad pulmonar obstructiva crónica,combustibles fósiles,costo efectividad,Respiratory tract disease,chronic obstructive pulmonary disease,fossil fuel,cost-benefit analysis

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