Abstract Here we present the results that show the tendency in mortality due to mental disorders, specifically alcohol-related psychosis, in the last 30 years in Mexico.

Resumen Se presentan resultados que buscan caracterizar el panorama epidemiológico sobre la tendencia de la mortalidad derivada de enfermedades mentales, específicamente psicosis alcohólica, ocurrido en los últimos 30 años, en la República Mexicana.

Objective. To present the results of the burden of disease, injuries and risk factors in Mexico from 1990 to 2010 for the principal illnesses, injuries and risk factors by sex. Materials and methods. A secondary analysis of the study results published by the Global Burden of Disease 2010 for Mexico performed by IHME. Results. In 2010, Mexico lost 26.2 million of Disability adjusted live years (DALYs), 56 % were in male and 44 % in women. The main causes of DALYs in men are violence, ischemic heart disease and road traffic injuries. In the case of women the leading causes are diabetes, chronic kidney disease and ischemic heart diseases. The mental disorders and musculoskeletal conditions concentrate 18% of health lost. The risk factors that most affect men in Mexico are: alcohol consumption, overweight/obesity, high blood glucose levels and blood pressure and tobacco consumption (35.6 % of DALYs lost). In women, overweight and obesity, high blood sugar and blood pressure, lack of physical activity and consumption of alcohol are responsible for 40 % of DALYs lost. In both sexes the problems with diet contribute 12% of the burden. Conclusions. The epidemiological situation in Mexico, demands an urgent adaptation and modernization of the health system.

Objetivo. Presentar los resultados de la carga de enfermedad en México de 1990 a 2010 para las principales enfermedades, lesiones y factores de riesgo, por sexo. Materiales y métodos. Se realizó un análisis secundario del estudio de la carga mundial de la enfermedad 2010. Resultados. En 2010 se perdieron 26.2 millones de años de vida saludable (AVISA), 56% en hombres y 44% en mujeres. Las principales causas de AVISA en hombres fueron violencia, cardiopatía isquémica y los accidentes de tránsito. En las mujeres fueron la diabetes, la enfermedad renal crónica y la cardiopatía isquémica. Los trastornos mentales y musculoesqueléticos concentran 18% de la carga. Los factores de riesgo que más afectan a los hombres son sobrepeso/obesidad; niveles de glucosa en sangre y de presión arterial elevados; y el consumo de alcohol y tabaco (35.6% de AVISA perdidos). En las mujeres, el sobrepeso y la obesidad; glucosa elevada; hipertensión arterial; baja actividad física; y el consumo de alcohol y tabaco fueron responsables de 40% de los AVISA perdidos; en ambos sexos, la dieta contribuye con 12% de la carga. Conclusiones. El panorama epidemiológico en México demanda una urgente adecuación y modernización del sistema de salud.

Objective. To present the results of the burden of disease, injuries and risk factors in Mexico from 1990 to 2010 for the principal illnesses, injuries and risk factors by sex. Materials and methods. A secondary analysis of the study results published by the Global Burden of Disease 2010 for Mexico performed by IHME. Results. In 2010, Mexico lost 26.2 million of Disability adjusted live years (DALYs), 56 % were in male and 44 % in women. The main causes of DALYs in men are violence, ischemic heart disease and road traffic injuries. In the case of women the leading causes are diabetes, chronic kidney disease and ischemic heart diseases. The mental disorders and musculoskeletal conditions concentrate 18% of health lost. The risk factors that most affect men in Mexico are: alcohol consumption, overweight/obesity, high blood glucose levels and blood pressure and tobacco consumption (35.6 % of DALYs lost). In women, overweight and obesity, high blood sugar and blood pressure, lack of physical activity and consumption of alcohol are responsible for 40 % of DALYs lost. In both sexes the problems with diet contribute 12% of the burden. Conclusions. The epidemiological situation in Mexico, demands an urgent adaptation and modernization of the health system.

Objetivo. Presentar los resultados de la carga de enfermedad en México de 1990 a 2010 para las principales enfermedades, lesiones y factores de riesgo, por sexo. Materiales y métodos. Se realizó un análisis secundario del estudio de la carga mundial de la enfermedad 2010. Resultados. En 2010 se perdieron 26.2 millones de años de vida saludable (AVISA), 56% en hombres y 44% en mujeres. Las principales causas de AVISA en hombres fueron violencia, cardiopatía isquémica y los accidentes de tránsito. En las mujeres fueron la diabetes, la enfermedad renal crónica y la cardiopatía isquémica. Los trastornos mentales y musculoesqueléticos concentran 18% de la carga. Los factores de riesgo que más afectan a los hombres son sobrepeso/obesidad; niveles de glucosa en sangre y de presión arterial elevados; y el consumo de alcohol y tabaco (35.6% de AVISA perdidos). En las mujeres, el sobrepeso y la obesidad; glucosa elevada; hipertensión arterial; baja actividad física; y el consumo de alcohol y tabaco fueron responsables de 40% de los AVISA perdidos; en ambos sexos, la dieta contribuye con 12% de la carga. Conclusiones. El panorama epidemiológico en México demanda una urgente adecuación y modernización del sistema de salud.

OBJECTIVE: To compare and analyze the main characteristics associated with pedestrian injuries mortality in Mexico City. MATERIAL AND METHODS: A crossectional design was done using the mortality database related with pedestrian fatality during the periods 1994-1997 and 2004-2007. Variables as sex, age, residence, education and place of evento ccurrence were analyzed. Standardized mortality ratios by delegation were used to the analysis. RESULTS: There was a reduction during 2004-2007 at least 17.5% in deaths by pedestrian injuries and mortality rate of 1.9/100.000 inhabitants on the first period.The high decrease was in men (4,6/100.000) than in women (1,2/100.000). (p<0,05). Four delegations presented the highest risk of pedestrian injuries death during both periods. CONCLUSIONS: Results show significant changes among both periods. Differences by sex pointed out the need of a differential analysis of the problem. Contribute to elaborate new research questions to be addressed in the future to work on the prevention of this public health problem.

OBJETIVO: Comparar y analizar las principales características de los peatones asociadas con muertes por atropellamiento en la Ciudad de México. MATERIAL Y MÉTODOS: Diseño transversal comparativo que emplea registros de muertes por atropellamiento en la Ciudad de México durante dos periodos iguales 1994-1997 y 2004-2007.Variables analizadas: sexo, edad, lugar de residencia y de ocurrencia,escolaridad y cohorte de nacimiento.Se elaboraron razones estandarizadas de mortalidad por delegación. RESULTADOS: La mortalidad por atropellamientos en 2004-2007 desciende 17.5% y la tasa en 1.9/100.000 habitantes respecto del primer periodo. El descenso es mayor en hombres (4,6/100.000) que en mujeres (1,2/100,000). El riesgo se concentra en cuatro delegaciones, para ambos períodos. CONCLUSIONES: La metodología permite observar cambios significativos entre los periodos analizados y genera la necesidad del análisis por sexo. Los resultados plantean nuevas preguntas a resolver con otros diseños encaminados a la prevención de este problema de salud pública.

OBJECTIVE: To compare and analyze the main characteristics associated with pedestrian injuries mortality in Mexico City. MATERIAL AND METHODS: A crossectional design was done using the mortality database related with pedestrian fatality during the periods 1994-1997 and 2004-2007. Variables as sex, age, residence, education and place of evento ccurrence were analyzed. Standardized mortality ratios by delegation were used to the analysis. RESULTS: There was a reduction during 2004-2007 at least 17.5% in deaths by pedestrian injuries and mortality rate of 1.9/100.000 inhabitants on the first period.The high decrease was in men (4,6/100.000) than in women (1,2/100.000). (p<0,05). Four delegations presented the highest risk of pedestrian injuries death during both periods. CONCLUSIONS: Results show significant changes among both periods. Differences by sex pointed out the need of a differential analysis of the problem. Contribute to elaborate new research questions to be addressed in the future to work on the prevention of this public health problem.

OBJETIVO: Comparar y analizar las principales características de los peatones asociadas con muertes por atropellamiento en la Ciudad de México. MATERIAL Y MÉTODOS: Diseño transversal comparativo que emplea registros de muertes por atropellamiento en la Ciudad de México durante dos periodos iguales 1994-1997 y 2004-2007.Variables analizadas: sexo, edad, lugar de residencia y de ocurrencia,escolaridad y cohorte de nacimiento.Se elaboraron razones estandarizadas de mortalidad por delegación. RESULTADOS: La mortalidad por atropellamientos en 2004-2007 desciende 17.5% y la tasa en 1.9/100.000 habitantes respecto del primer periodo. El descenso es mayor en hombres (4,6/100.000) que en mujeres (1,2/100,000). El riesgo se concentra en cuatro delegaciones, para ambos períodos. CONCLUSIONES: La metodología permite observar cambios significativos entre los periodos analizados y genera la necesidad del análisis por sexo. Los resultados plantean nuevas preguntas a resolver con otros diseños encaminados a la prevención de este problema de salud pública.

OBJECTIVE. To analyze the motives for using and not using pedestrian bridges (PB). MATERIAL AND METHODS. A cross-sectional survey was conducted of a sample of pedestrian users and non-users of PB; a logistic regression model was used to analyze the motives for use and non-use. RESULTS. The prevalence of non-use was 50.5 % of 813 surveyed pedestrians; the principal reason to use a PB was safety, and not to use it was "laziness". There were significant differences when analyzing the reason of non-use in the age groups 19 to 36 years, adjusted for education and physical characteristics of the PB ([aOR=1.7; 95 % CI=1.06-2.86] and [ORa.1.9; 95 % CI=1.14-3.33], respectively). CONCLUSIONS. The results of this study allow us to identify important aspects to consider "from the perspective of the pedestrians" when constructing new PB and improving existing PB to increase use in areas with a high risk of pedestrian injuries.

OBJETIVO. Analizar los motivos de uso y no uso de puentes peatonales (PP). MATERIAL Y MÉTODOS. Se empleó un diseño transversal, a partir de una muestra de peatones usuarios y no usuarios de PP; se utilizó regresión logística para identificar los factores que influyen en el uso y no uso de PP. RESULTADOS. La prevalencia de no uso fue 50.5% en 813 peatones entrevistados; la principal razón para usar PP fue "seguridad", del no uso fue "flojera". Hubo diferencias significativas al analizar motivos de no uso de PP en las edades de 19 a 36 años, ajustando por escolaridad y características físicas del PP, con RMa. 1.7 (IC95% 1.06-2.86) y RMa. 1.9 (IC95% 1.14-3.33), respectivamente. CONCLUSIONES. Los resultados de este estudio permiten identificar aspectos importantes a considerar desde la perspectiva de los peatones, antes de construir nuevos PP, así como aquéllos que deben mejorarse para incrementar su uso en zonas de alto riesgo de lesiones por atropellamiento.

OBJECTIVE. To analyze the motives for using and not using pedestrian bridges (PB). MATERIAL AND METHODS. A cross-sectional survey was conducted of a sample of pedestrian users and non-users of PB; a logistic regression model was used to analyze the motives for use and non-use. RESULTS. The prevalence of non-use was 50.5 % of 813 surveyed pedestrians; the principal reason to use a PB was safety, and not to use it was "laziness". There were significant differences when analyzing the reason of non-use in the age groups 19 to 36 years, adjusted for education and physical characteristics of the PB ([aOR=1.7; 95 % CI=1.06-2.86] and [ORa.1.9; 95 % CI=1.14-3.33], respectively). CONCLUSIONS. The results of this study allow us to identify important aspects to consider "from the perspective of the pedestrians" when constructing new PB and improving existing PB to increase use in areas with a high risk of pedestrian injuries.

OBJETIVO. Analizar los motivos de uso y no uso de puentes peatonales (PP). MATERIAL Y MÉTODOS. Se empleó un diseño transversal, a partir de una muestra de peatones usuarios y no usuarios de PP; se utilizó regresión logística para identificar los factores que influyen en el uso y no uso de PP. RESULTADOS. La prevalencia de no uso fue 50.5% en 813 peatones entrevistados; la principal razón para usar PP fue "seguridad", del no uso fue "flojera". Hubo diferencias significativas al analizar motivos de no uso de PP en las edades de 19 a 36 años, ajustando por escolaridad y características físicas del PP, con RMa. 1.7 (IC95% 1.06-2.86) y RMa. 1.9 (IC95% 1.14-3.33), respectivamente. CONCLUSIONES. Los resultados de este estudio permiten identificar aspectos importantes a considerar desde la perspectiva de los peatones, antes de construir nuevos PP, así como aquéllos que deben mejorarse para incrementar su uso en zonas de alto riesgo de lesiones por atropellamiento.

At least 30 % of traffic-related injuries involve pedestrians. These events typically result in incapacitating physical injury and may even cause death. Productive-agedmen, aged 20 to 45, represent the people generally affected in Latin-America. They tend to be heads of household supporting their families and whose absence greatly affects the home's financial situation. A systematic review was conducted of the burden represented by traffic-related injuries, especially those involving pedestrians, and of the primary preventative measures designed and implemented for controlling fatal and non-fatal injuries to pedestrians by improving road safety. There have been few studies in Latin-America regarding these types of accidents and most interventions aimed at reducing traffic-related injuries have been directed towards vehicle drivers and passengers, little attention being focused on other traffic-related actors. This increases pedestrian inequality and vulnerability. There is a consensus among experts worldwide that rigorous investigation is needed (especially in low- and middle-income countries) to evaluate the effectiveness of interventions focused on other traffic-related actors. This review presents a variety of primary prevention strategies, other than pedestrian bridges, which (according to the available evidence) should start to be implemented. These would include modifying the physical environment, education, speed controls, enforcing legislation and imposing respect for pedestrians, valuing their limitations and vulnerability.

Dentro de las lesiones causadas por el tránsito (LCT) los atropellamientos representan a nivel mundial al menos la tercera parte de éstas; son eventos que habitualmente generan lesiones corporales incapacitantes e incluso pueden provocar la muerte. En Latino-América las personas afectadas, en general, son hombres entre 20 y 45 años, en edad productiva, jefes de hogar, personas que sostienen sus familias, su ausencia genera gran impacto en la economía de sus hogares. Se realizó una revisión sistemática sobre la carga que representan las LCT, en especial los atropellamientos y sobre las medidas de prevención primaria diseñadas e implementadas para el control de lesiones fatales y no fatales en peatones a través del mejoramiento de procesos de seguridad vial. En Latino- América los atropellamientos han sido poco estudiados; el grueso de intervenciones para reducir las LCT se han orientado hacia el conductor y ocupantes de vehículos y poco hacia los demás actores del tránsito, incrementando la desigualdad y vulnerabilidad de peatones; existe consenso mundial entre expertos, que es necesario investigaciones rigurosas, en especial en países de bajos y medianos ingresos orientados a evaluar la efectividad de intervenciones focalizadas hacia otros actores del tránsito; en la presente revisión se expone una variedad de estrategias de prevención primaria diferentes a puentes peatonales que según la evidencia disponible debe empezar a implementarse. Varias de éstas incluyen modificaciones al medio ambiente físico, educación, control de la velocidad, cumplimiento de la legislación y respeto por el peatón, valorando sus limitantes y vulnerabilidad.

Dentro de las lesiones causadas por el tránsito (LCT) los atropellamientos representan a nivel mundial al menos la tercera parte de éstas; son eventos que habitualmente generan lesiones corporales incapacitantes e incluso pueden provocar la muerte. En Latino-América las personas afectadas, en general, son hombres entre 20 y 45 años, en edad productiva, jefes de hogar, personas que sostienen sus familias, su ausencia genera gran impacto en la economía de sus hogares. Se realizó una revisión sistemática sobre la carga que representan las LCT, en especial los atropellamientos y sobre las medidas de prevención primaria diseñadas e implementadas para el control de lesiones fatales y no fatales en peatones a través del mejoramiento de procesos de seguridad vial. En Latino- América los atropellamientos han sido poco estudiados; el grueso de intervenciones para reducir las LCT se han orientado hacia el conductor y ocupantes de vehículos y poco hacia los demás actores del tránsito, incrementando la desigualdad y vulnerabilidad de peatones; existe consenso mundial entre expertos, que es necesario investigaciones rigurosas, en especial en países de bajos y medianos ingresos orientados a evaluar la efectividad de intervenciones focalizadas hacia otros actores del tránsito; en la presente revisión se expone una variedad de estrategias de prevención primaria diferentes a puentes peatonales que según la evidencia disponible debe empezar a implementarse. Varias de éstas incluyen modificaciones al medio ambiente físico, educación, control de la velocidad, cumplimiento de la legislación y respeto por el peatón, valorando sus limitantes y vulnerabilidad.

At least 30 % of traffic-related injuries involve pedestrians. These events typically result in incapacitating physical injury and may even cause death. Productive-agedmen, aged 20 to 45, represent the people generally affected in Latin-America. They tend to be heads of household supporting their families and whose absence greatly affects the home's financial situation. A systematic review was conducted of the burden represented by traffic-related injuries, especially those involving pedestrians, and of the primary preventative measures designed and implemented for controlling fatal and non-fatal injuries to pedestrians by improving road safety. There have been few studies in Latin-America regarding these types of accidents and most interventions aimed at reducing traffic-related injuries have been directed towards vehicle drivers and passengers, little attention being focused on other traffic-related actors. This increases pedestrian inequality and vulnerability. There is a consensus among experts worldwide that rigorous investigation is needed (especially in low- and middle-income countries) to evaluate the effectiveness of interventions focused on other traffic-related actors. This review presents a variety of primary prevention strategies, other than pedestrian bridges, which (according to the available evidence) should start to be implemented. These would include modifying the physical environment, education, speed controls, enforcing legislation and imposing respect for pedestrians, valuing their limitations and vulnerability.

OBJECTIVE: To characterize tobacco use according to level of poverty in a random, nationally representative sample of adolescents (10 to 21 years old), living in urban areas with less than 50 000 inhabitants. The study was done in 2001 as part of the baseline assessment of the evaluation of the governmental program, Oportunidades. MATERIAL AND METHODS: A questionnaire was applied to 29 548 adolescents living in 30 000 selected households and it included specific questions on individual tobacco use among other questions. RESULTS: The prevalence of smokers was 3.5% (95% CI: 3.3%-3.7%) and experimenters 9.9% (95% CI: 9.6%-10.2%). A logistic regression model for clustered data was constructed in order to evaluate the associated factors that distinguish a smoker from an experimenter. After adjusting for level of poverty of the household and use of alcohol and drugs, a significant association (OR = 1.5, p <0.01) was found with having a paid job and a differential association was found between gender and age group. CONCLUSIONS: The results of this study suggest that the additional availability of money that an adolescent has, could increase the prevalence of tobacco smoking and that the program Oportunidades should include prevention campaigns directed specifically at this population group.

OBJETIVO: Caracterizar el consumo de tabaco de acuerdo con el nivel de pobreza en una muestra probabilística nacional de jóvenes de 10 a 21 años de edad que viven en zonas suburbanas de México. El estudio forma parte de la evaluación del programa gubernamental Oportunidades (2001). MATERIAL Y MÉTODOS: Se entrevistaron a 29 548 jóvenes residentes en 30 000 hogares. Se calcularon la prevalencia de fumar y los factores relacionados que diferencian al fumador habitual del experimentador. RESULTADOS: La prevalencia de fumadores y experimentadores fue de 3.5% (IC95% 3.3-3.7) y 9.9% (IC95% 9.6-10.2), respectivamente. El nexo entre los diferentes factores que se vinculan con las condiciones de fumador y experimentador se evaluó a través de modelos de regresión logística para datos agrupados. Después de ajustar por nivel de pobreza del hogar y consumo de alcohol y drogas, se detectó una relación significativa (RM = 1.5, p <0.01) con tener un trabajo remunerado y una diferencial entre el género y el grupo de edad. CONCLUSIONES: La disponibilidad de dinero por parte del joven es un factor que contribuye a explicar la transición entre experimentar y fumar. Dado que el programa Oportunidades incluye transferencias monetarias a los hogares incorporados al programa, es necesario instituir campañas de prevención para evitar que la disponibilidad adicional de dinero en los jóvenes se utilice en la compra de cigarillos.

OBJECTIVE: To characterize tobacco use according to level of poverty in a random, nationally representative sample of adolescents (10 to 21 years old), living in urban areas with less than 50 000 inhabitants. The study was done in 2001 as part of the baseline assessment of the evaluation of the governmental program, Oportunidades. MATERIAL AND METHODS: A questionnaire was applied to 29 548 adolescents living in 30 000 selected households and it included specific questions on individual tobacco use among other questions. RESULTS: The prevalence of smokers was 3.5% (95% CI: 3.3%-3.7%) and experimenters 9.9% (95% CI: 9.6%-10.2%). A logistic regression model for clustered data was constructed in order to evaluate the associated factors that distinguish a smoker from an experimenter. After adjusting for level of poverty of the household and use of alcohol and drugs, a significant association (OR = 1.5, p <0.01) was found with having a paid job and a differential association was found between gender and age group. CONCLUSIONS: The results of this study suggest that the additional availability of money that an adolescent has, could increase the prevalence of tobacco smoking and that the program Oportunidades should include prevention campaigns directed specifically at this population group.

OBJETIVO: Caracterizar el consumo de tabaco de acuerdo con el nivel de pobreza en una muestra probabilística nacional de jóvenes de 10 a 21 años de edad que viven en zonas suburbanas de México. El estudio forma parte de la evaluación del programa gubernamental Oportunidades (2001). MATERIAL Y MÉTODOS: Se entrevistaron a 29 548 jóvenes residentes en 30 000 hogares. Se calcularon la prevalencia de fumar y los factores relacionados que diferencian al fumador habitual del experimentador. RESULTADOS: La prevalencia de fumadores y experimentadores fue de 3.5% (IC95% 3.3-3.7) y 9.9% (IC95% 9.6-10.2), respectivamente. El nexo entre los diferentes factores que se vinculan con las condiciones de fumador y experimentador se evaluó a través de modelos de regresión logística para datos agrupados. Después de ajustar por nivel de pobreza del hogar y consumo de alcohol y drogas, se detectó una relación significativa (RM = 1.5, p <0.01) con tener un trabajo remunerado y una diferencial entre el género y el grupo de edad. CONCLUSIONES: La disponibilidad de dinero por parte del joven es un factor que contribuye a explicar la transición entre experimentar y fumar. Dado que el programa Oportunidades incluye transferencias monetarias a los hogares incorporados al programa, es necesario instituir campañas de prevención para evitar que la disponibilidad adicional de dinero en los jóvenes se utilice en la compra de cigarillos.

OBJETIVO: Analisar o efeito das características do indivíduo carente, da família e do próprio sistema de atendimento com a utilização da vacinação infantil, após a reforma do sistema de saúde, na Colômbia. MÉTODOS: Os dados foram colhidos numa amostra aleatória de assegurados em agregados familiares de baixo rendimento, em Bogotá, em 1999. O padrão analítico e conceitual utilizado baseou-se no Modelo Comportamental de Utilização de Serviços de Saúde de Andersen. Este considera duas unidades de análise para avaliar a vacinação e seus determinantes: 1) a população carente assegurada, inclusive características das crianças e suas famílias; e 2) o sistema de saúde. As análises estatísticas incluíram o teste do qui-quadrado com intervalo de confiança de 95%, modelos de regressão multivariada e coeficiente alfa de Cronbach. RESULTADOS: A análise de regressão mostra que a vacinação esteve relacionada com o tamanho da família (OR=4,3), a área da residência (OR=1,7), a idade da criança (OR=0,7) e os anos de escolaridade do chefe de família (OR=0,5). Também esteve relacionada com as características do sistema de saúde, tais como a disponibilidade de posto de atendimento (OR=6,0), e a informação sobre os programas e horários dos serviços de saúde (OR=2,1). CONCLUSÕES: Os baixos níveis de vacinação e a importante relação que existe com o sistema de atendimento mostram barreiras que devem ser avaliadas e resolvidas. A inexistência de postos com atendimento regular e a deficiente informação à população são fatores que podem limitar a utilização dos serviços.

OBJECTIVE: To assess the effects of individual, household and healthcare system factors on poor children's use of vaccination after the reform of the Colombian health system. METHODS: A household survey was carried out in a random sample of insured poor population in Bogota, in 1999. The conceptual and analytical framework was based on the Andersen's Behavioral Model of Health Services Utilization. It considers two units of analysis for studying vaccination use and its determinants: the insured poor population, including the children and their families characteristics; and the health care system. Statistical analysis were carried out by chi-square test with 95% confidence intervals, multivariate regression models and Cronbach's alpha coefficient. RESULTS: The logistic regression analysis showed that vaccination use was related not only to population characteristics such as family size (OR=4.3), living area (OR=1.7), child's age (OR=0.7) and head-of-household's years of schooling (OR=0.5), but also strongly related to health care system features, such as having a regular health provider (OR=6.0) and information on providers' schedules and requirements for obtaining care services (OR=2.1). CONCLUSIONS: The low vaccination use and the relevant relationships to health care delivery systems characteristics show that there are barriers in the healthcare system, which should be assessed and eliminated. Non-availability of regular healthcare and deficient information to the population are factors that can limit service utilization.

OBJETIVO: Analisar o efeito das características do indivíduo carente, da família e do próprio sistema de atendimento com a utilização da vacinação infantil, após a reforma do sistema de saúde, na Colômbia. MÉTODOS: Os dados foram colhidos numa amostra aleatória de assegurados em agregados familiares de baixo rendimento, em Bogotá, em 1999. O padrão analítico e conceitual utilizado baseou-se no Modelo Comportamental de Utilização de Serviços de Saúde de Andersen. Este considera duas unidades de análise para avaliar a vacinação e seus determinantes: 1) a população carente assegurada, inclusive características das crianças e suas famílias; e 2) o sistema de saúde. As análises estatísticas incluíram o teste do qui-quadrado com intervalo de confiança de 95%, modelos de regressão multivariada e coeficiente alfa de Cronbach. RESULTADOS: A análise de regressão mostra que a vacinação esteve relacionada com o tamanho da família (OR=4,3), a área da residência (OR=1,7), a idade da criança (OR=0,7) e os anos de escolaridade do chefe de família (OR=0,5). Também esteve relacionada com as características do sistema de saúde, tais como a disponibilidade de posto de atendimento (OR=6,0), e a informação sobre os programas e horários dos serviços de saúde (OR=2,1). CONCLUSÕES: Os baixos níveis de vacinação e a importante relação que existe com o sistema de atendimento mostram barreiras que devem ser avaliadas e resolvidas. A inexistência de postos com atendimento regular e a deficiente informação à população são fatores que podem limitar a utilização dos serviços.

OBJECTIVE: To assess the effects of individual, household and healthcare system factors on poor children's use of vaccination after the reform of the Colombian health system. METHODS: A household survey was carried out in a random sample of insured poor population in Bogota, in 1999. The conceptual and analytical framework was based on the Andersen's Behavioral Model of Health Services Utilization. It considers two units of analysis for studying vaccination use and its determinants: the insured poor population, including the children and their families characteristics; and the health care system. Statistical analysis were carried out by chi-square test with 95% confidence intervals, multivariate regression models and Cronbach's alpha coefficient. RESULTS: The logistic regression analysis showed that vaccination use was related not only to population characteristics such as family size (OR=4.3), living area (OR=1.7), child's age (OR=0.7) and head-of-household's years of schooling (OR=0.5), but also strongly related to health care system features, such as having a regular health provider (OR=6.0) and information on providers' schedules and requirements for obtaining care services (OR=2.1). CONCLUSIONS: The low vaccination use and the relevant relationships to health care delivery systems characteristics show that there are barriers in the healthcare system, which should be assessed and eliminated. Non-availability of regular healthcare and deficient information to the population are factors that can limit service utilization.

Objective. This paper aims at describing the behavior of tobacco's demand in Mexico across four one-year periods: 1992, 1994, 1996, and 1998, as well as to estimate a cigarette demand function. Material and Methods. A cross-sectional study with longitudinal analysis was conducted. Information sources were the Encuesta Nacional de Ingreso y Gasto de los Hogares (ENIGH) (National Survey of Household Income and Spending) (NHSIS) and the tobacco pack prices reported by the Procuraduría Federal del Consumidor (Profeco) (Federal Office of Consumer's Protection) (FOCP). Spending, income, and prices were deflated to 1994 prices; the population was stratified into quintiles of real income, by rural and urban areas. Indicators of daily consumption of cigarettes and packs were constructed and prices per pack calculated. Adjusted prevalence figures were estimated. Logistic and linear regression models were used for statistical inference; a cigarette demand function was estimated using multivariate logistic regression, to find socioeconomic determinants of cigarette consumption. Results. The adjusted prevalence of household tobacco spending fell from 22.4 to 9.9% between 1992 and 1998. Households allocated more than 4% of their income to tobacco consumption. A trend between income level and cigarette spending was observed, with the first quintile (the poorest population) allocated a greater share of their income than higher quintiles. The average daily consumption of cigarettes increased from 7.5 to 9.8 between 1992 and 1998. It was estimated that 90% of "smoker homes" consumed up to one package per day. The proportion of non-filter cigarettes increased from 0.4 to 4.8% between 1992-1998, with a bigger increase in 1996. Finally, it was found that the most important determinants of spending were prices and income. Conclusions. Policies focusing on tobacco prices would help to reduce tobacco consumption and improve the health of the Mexican population.

Objetivo. Describir el comportamiento de la demanda de tabaco en México para cuatro momentos en el tiempo: 1992, 1994, 1996 y 1998, y adicionalmente estimar una función de demanda de cigarrillos. Material y métodos. Se realizó un estudio transversal con análisis longitudinal, tomando como fuentes de información la Encuesta Nacional de Ingreso y Gasto de los Hogares (ENIGH) y la lista de precios de los cigarrillos de la Procuraduría Federal del Consumidor (Profeco). El gasto, el ingreso y los precios se deflactaron a precios de 1994. Se estratificó a la población en quintiles de ingreso real, y solamente se tomaron en cuenta las áreas rurales y urbanas. Se construyeron indicadores para el consumo diario de cigarrillos y cajetillas y se calcularon los precios por cajetilla. Se calculó la prevalencia ajustada. Mediante análisis de regresión logísticos y lineales se estableció la inferencia estadística. Se estimó una función de demanda de cigarrillos mediante una regresión lineal multivariada, para encontrar los determinantes socioeconómicos del consumo de cigarrillos. Resultados. La prevalencia ajustada de los hogares que reportaron algún gasto en tabaco disminuyó de 22.4 a 9.9% entre 1992 y 1998. Los hogares asignaron poco más de 4% de su ingreso a la adquisición de tabaco. Se observó un gradiente entre nivel de ingreso y gasto en cigarrillos. El quintil I (el más pobre) destinó una mayor proporción de su ingreso que los quintiles superiores. El promedio de cigarrillos consumidos diariamente pasó de 7.5 a 9.8 entre 1992 y 1998. Se estimó que más de 90% de los "hogares fumadores" consumió hasta una cajetilla diaria. La demanda estimada de cigarrillos sin filtro aumentó entre 1992 a 1998, pasando de 0.4 a 4.8%, registrándose así el mayor incremento en 1996. Finalmente, se encontró que, tanto los precios como el ingreso, fueron los determinantes más importantes del gasto en tabaco. Conclusiones. Una política de precios podría favorecer la reducción de la demanda y, por ende, mejorar las expectativas de salud de la población.

Objective. To assess the prevalence of tobacco smoking by work type among healthcare workers of Instituto Mexicano del Seguro Social (Mexican Institute of Social Security, IMSS), in Morelos State, Mexico. Material and Methods. A cross-sectional was conducted in 3 133 healthcare workers in the 23 medical units of IMSS Morelos District, from October 1998 to March 2000. Data were collected using a self-applied questionnaire on tobacco smoking for different life-stages, some demographic characteristics, and work type. The prevalence rates of smoking and 95% confidence intervals (95% CI) were estimated by age groups, gender, and work type. Results. A total of 3 133 employees participated; 53.4% (95% CI 50.8-56.8) of men and 27.4% (95% CI 25.4-29.3) of women reported having smoked tobacco some time in their lives. The prevalence of current smoking was 28.3% (95% CI 25.6-31.0) and 14.4% (95% CI 12.8-15.9) in men and women, respectively. Among men, physicians have a lower prevalence (20.9%) of current smoking than that of other workers; for example, the prevalence was 26,6% among technicians and 33% among administrative personnel. Women in general had a lower prevalence than men in all categories, and in nurses it was still lower t(12,5%) than that of female physicians (16%). Conclusions. The prevalence of tobacco smoking in healthcare workers of IMSS Morelos was lower than that of the general population. Nevertheless, it is necessary to keep working on tobacco control programs to encourage smoking cessation among healthcare workers and make them aware of the positive role they may play in promoting programs to stop tobacco smoking and nicotine addiction.

Objetivo. Determinar la prevalencia de hábito tabáquico por categoría laboral en trabajadores de la salud del Instituto Mexicano del Seguro Social (IMSS), en el estado de Morelos, México. Material y métodos. Se realizó un estudio transversal en 3 133 empleados de los servicios médicos de las 23 unidades médicas con que cuenta la delegación Morelos del IMSS, durante el periodo de octubre de 1998 a marzo de 2000. Mediante un cuestionario autoaplicable se recolectó información sobre patrones de consumo de tabaco en distintas etapas de la vida, así como algunas características demográficas y categoría laboral. Se estimaron prevalencias e intervalos de confianza al 95% por grupos de edad y sexo para distintas categorías laborales. Resultados. De los 3 133 empleados participantes, 53.4% (IC 95% 50.8-56.8) de los hombres y 27.4% (IC 95% 25.4-29.3) de las mujeres contaban con historia de tabaquismo en algún momento de la vida. La prevalencia de tabaquismo activo fue de 28.3 % (IC 95% 25.6-31.0) y 14.4% (IC 95% 12.8-15.9) en hombres y mujeres, respectivamente. Entre los hombres, los médicos presentan una prevalencia de tabaquismo activo menor (20.9%) que la observada entre trabajadores de otras áreas: personal administrativo (33.0%) y personal técnico de distintas categorías (26.6%). Las mujeres muestran en general una prevalencia menor que los hombres en todas las categorías, y las enfermeras presentan una prevalencia discretamente menor (12.5%) que las médicas (16.0%). Conclusiones. El patrón del consumo de tabaco observado en profesionales de la salud del IMSS Morelos muestra una prevalencia menor a la observada en población general. Sin embargo, es necesario continuar con programas para desalentar el consumo del tabaco entre profesionales de la salud, y tratar de hacerlos concientes acerca de la influencia positiva que pueden y deben ejercer en la sociedad para impulsar programas integrados contra el consumo del tabaco y la adicción a la nicotina.