Background: A high level of social support (SS) is associated with better health outcomes in many conditions, such as chronic diseases. Aim : To describe the level of SS in patients with Hypertension and type II Diabetes at Primary Health Care level in Chile and its association with self-rated health, adherence to treatment and better glycemic and blood pressure control. Material and Methods : SS was measured using a social support inventory previously validated in Chile. Self-Rated Health was assessed with a single non-comparative general question; adherence to medication was assessed using the four-item Morisky medication adherence scale. Blood glucose and blood pressure control were also assessed. A logistic regression was performed to estimate Prevalence Odds Ratio (POR) and Robust Poisson method to estimate the Prevalence Ratio (PR). Results : Eighty three percent of the 647 participants evaluated high for SS. There was a significant correlation between SS and Self-rated health (POR 2.32; 95% confidence intervals (CI) 1.19-11.23; PR 1.18; 95% CI 1.07-1.31). No statistically significant association was observed with medication adherence, glycemic or blood pressure control. Conclusions: High levels of SS were found. The association between self-rated health suggests that SS interventions targeting vulnerable subgroups would be worthwhile.

Background: Adequate management of high blood pressure (HBP) and Type 2 Diabetes (DM2) is a challenge to the healthcare system in Chile. Aim: To evaluate the effectiveness of a case management (CM) approach to manage HBP and DMII at Primary Healthcare (PHC) level, headed by healthcare technicians with the supervision of registered nurses. Material and Methods: Two primary health care centers were selected. In one the case management approach was used and the other continued with the usual care model. Patients with HBP or DM2 were selected to participate in both centers. The main outcomes were changes blood pressure and glycosylated hemoglobin levels. Results: Three hundred twenty-eight patients were allocated to the intervention group and 316 to control group. At the baseline evaluation, participants at the control health center had better systolic and diastolic BP levels (SBP and DBP), but no difference in glycosylated hemoglobin. After twelve months the adjusted mean difference in HBP patients for SBP was −0.93 (95% conficence intervals (CI) −5.49,3.63) and for DBP was 1.78 (95%CI −2.89,6.43). Among HBP+DMII patients, the mean difference for SBP was −0.51 (95% −0.52,0.49) and for DBP was −3.39 (95%CI −6.07, −0.7). No differences in glycosylated hemoglobin were observed. In a secondary analysis, the intervention group showed a statistically significant higher SBP and DBP reduction than the control group. Conclusions: The case management approach tested in this study had promissory results among patients with high blood pressure.

This paper shows the results of an analysis of the health communication needs of 181 autonomous Chileans over 60 years, aimed to design the prototype of a system of preventive health communication for these audiences and their support networks. A questionnaire regarding personal information, sociability indicators, media and technology use habits, subjective well-being and health self-perception was applied, to define the communication objectives with preventive and educational health purposes, as well as the editorial view, and the production of content in different formats, under the active ageing perspective. The research team is interdisciplinary: communications, public health and sociology.

Este trabajo expone las necesidades en comunicación en salud de 181 chilenos autónomos, mayores de 60 años, para diseñar el prototipo de un sistema de comunicación en salud preventiva para estas audiencias y sus redes de apoyo. Se aplicó un cuestionario sobre variables personales, de sociabilidad, uso de medios y tecnologías, bienestar subjetivo y autopercepción de salud. Esto para definir los objetivos de comunicación, el medio (un sitio web multiplataforma), la línea editorial y los contenidos en diferentes formatos, desde la perspectiva del envejecimiento activo. El equipo de investigación es de carácter interdisciplinario: comunicación, salud pública y sociología del envejecimiento.

Este trabalho apresenta as necessidades de comunicação de saúde de 181 chilenos autónomas com mais de 60 anos para projetar o protótipo de um sistema de comunicação em saúde preventiva para esses públicos e respectivas redes de apoio. Foi aplicado um questionário sobre variáveis pessoais, de sociabilidade, hábitos de uso de mídia e tecnologia, bem-estar subjetivo e autopercepção de saúde. O propósito foi definir os objetivos de comunicação, a mídia (um site multiplataforma), a linha editorial e a produção do conteúdo em diferentes formatos, sob a perspectiva do envelhecimento activo. A equipa de investigação é interdisciplinar: comunicações, saúde pública e sociologia.

RESUMO O uso de compressas quentes é uma estratégia de termoterapia superficial amplamente utilizada e um de seus benefícios é o aumento da flexibilidade muscular. Porém, existem poucas informações sobre os efeitos das compressas quentes, quando não associadas a outras intervenções terapêuticas, na flexibilidade da região lombar. O objetivo do seguinte trabalho foi comparar os efeitos gerados pela aplicação de três tipos diferentes de compressas quentes na flexibilidade da região lombar de estudantes saudáveis. Três sessões de 15 minutos de calor superficial aplicado através de compressas quentes (compressa úmida quente, compressa de sementes e compressa de gel). A temperatura da compressa e da região lombar e a ocorrência de eritema foram registradas a cada 5 minutos. O teste de Schober foi realizado antes da primeira e após a última sessão. Após 15 minutos de tratamento, a compressa de sementes apresentou maior temperatura final. No mesmo período, a menor temperatura lombar foi obtida pela compressa de gel. O tratamento com os três tipos de compressa aumentou a ocorrência de eritema e causou aumento significativo da flexibilidade da região lombar avaliada pelo teste de Schober. Existem diferenças significativas no efeito gerado pelos três tipos de compressas quentes sobre a flexibilidade da região lombar. A compressa úmida quente proporcionou maior transferência de calor para a região lombar e propiciou um aumento mais pronunciado da flexibilidade da região lombar.

ABSTRACT The use of hot pack is a common superficial thermotherapy strategy and one of its benefits is the increase of muscle flexibility. However, there is a lack of information about the effects of the heat pack alone, without being used in association with other therapeutic interventions, in the flexibility of the lumbar region. The aim of this study was to compare the effects generated by the application of three different pack on the flexibility of the lower backs of healthy students. Three sessions of 15 minutes of superficial heat through a hot pack (moist heat pack-MHP, seed pack-SP or gel pack-GP) were applied to the lower back. Pack and lower back temperatures and erythema were registered every 5 minutes. A Schober test was performed before the first session and after the third session. After 15 minutes of treatment, pack temperature was higher in the SP group. At the same time, lumbar temperature was lower in the GP group. The heat treatment also increased erythema in the lower back for all three groups. There was a significant increase in intragroup flexibility as assessed by the Schober Test for all groups. There are significant differences in the effect generated between the three types of pack on the flexibility of the lower back. The MHP was able to transfer more heat to the lumbar area and provided a more pronounced increase in the flexibility of lower back tissues.

RESUMEN El empleo de compresas calientes es muy utilizado por la termoterapia superficial como forma de aumentar la flexibilidad muscular. Pero son pocas las informaciones sobre sus efectos, cuando asociadas a otras intervenciones terapéuticas, en la flexibilidad de la región lumbar. Este estudio tiene el objeto de comparar los efectos de la aplicación de tres tipos distintos de compresas calientas en la flexibilidad de la región lumbar en estudiantes saludables. Fueron tres sesiones de quince minutos de calor superficial aplicadas a través de compresas calientes (compresa húmeda, compresa de semillas y compresa de gel) en la región lumbar de estos participantes. Se registraban cada cinco minutos la temperatura de la compresa y de la región lumbar y la existencia de eritema. Se empleó la prueba de Schober realizada antes de la primera y después de la última sesión. Tras quince minutos de tratamiento, la compresa de semillas presentó una temperatura final mayor. En este mismo periodo, la menor temperatura lumbar la registró la compresa de gel. El tratamiento con tres tipos de compresas aumentó la existencia de eritema y el significativo aumento de la flexibilidad de la región lumbar, evaluado por la prueba de Schober. Diferencias significativas ocurrieron con el empleo de los tres tipos de compresas calientes sobre la flexibilidad de la región lumbar. La compresa húmeda caliente tuvo una transferencia de calor para la región lumbar mayor, por lo que aumentó más la flexibilidad de la región evaluada.

In 2011 the Chilean National Health Fund (FONASA) commissioned a study to assess the costs of the 120 most relevant hospital care services with an established fee, in a large sample of public hospitals. We herein report the cost evaluation results of such study, considering the financial condition of those hospitals in the year of the study. Based on the premise that the expenses derived from the provision of institutional and appraised hospital services should be identical to the billing of hospitals to FONASA, the prices are undervalued, since they cover only 56% of billing, generating a gap between expenses and invoicing. This gap shows an important limitation of tariffs, since their prices do not cover the real costs. However not all hospitals behave in the same way. While the provision of services of some hospitals is even higher than their billing, most hospitals do not completely justify their invoicing. These assumptions would imply that, generally speaking, hospital debts are justified by the costs incurred. However, hospitals have heterogeneous financial situations that need to be analyzed carefully. In particular, nothing can be said about their relative efficiency if cost estimations are not adjusted by the complexity of patients attended and comparison groups are not defined.

OBJECTIVE: Present a methodology for evaluating cost-effectiveness in primary health care centers (PHCs) in Chile based on the family health care model promoted in Chile and evaluate the results of the first two years of operation of the first pilot center to work under this new primary-care model. METHODS: A cost-effectiveness study with a social perspective and a one-year time frame was conducted. In order to compare the university health center in question with the control (a municipal health center), a Family Health Center Composite Quality Index (FHCCQI) was devised. It combines technical indicators and user perceptions of the health centers in six areas: access, continuity of medical care, a preventive and promotional clinical approach, problem-solving capability, participation, and a biopsychosocial and family approach. In order to calculate the costs, the centers' expenses, the savings realized in the rest of the health system, and patients' out-of-pocket expenditures were considered. The incremental cost-effectiveness ratio (ICR) was estimated and a sensitivity analysis was performed. RESULTS: The university health center was 13.4% more expensive (an additional US$ 8.93 per annum per enrollee) and was more effective (FHCCQI 13.3% greater) than the municipal one. Accordingly, the ICR is US$ 0.67 for each additional percentage point of FHCCQI increase. CONCLUSIONS: According to the PHC evaluation model that was implemented, the centers that follow the Chilean family health care model are more effective than traditional PHC centers, as measured by both technical indicators and user ratings.

OBJETIVO: Presentar una metodología para la evaluación de la relación costo-efectividad en centros de atención primaria de salud (APS) a partir del modelo de atención familiar promovido en Chile y evaluar los resultados de los dos primeros años de funcionamiento del primer centro piloto que funciona bajo este nuevo modelo de atención primaria. MÉTODOS. Se realizó un estudio de costo-efectividad, con una perspectiva social y un horizonte temporal de un año. Para comparar el centro intervenido (universitario) con el centro de control (municipal) se construyó el índice compuesto de calidad de los centros de salud familiar (ICCESFAM), que combina indicadores técnicos y la percepción de los usuarios de los centros en seis dimensiones: accesibilidad, continuidad de la atención médica, enfoque clínico preventivo y promocional, resolutividad, participación, y enfoque biopsicosocial y familiar. Para calcular los costos se tomó en cuenta el gasto en los centros, el ahorro producido al resto del sistema sanitario y el gasto de bolsillo de los pacientes. Se estimó la razón costo-efectividad incremental (RCEI) y se realizó un análisis de sensibilidad. RESULTADOS: El centro de salud universitario resultó 13,4% más caro (US$ 8,93 anuales adicionales por inscrito) y más efectivo (ICCESFAM 13,3% mayor) que el municipal. Estos resultados hacen que la RCEI sea de US$ 0,67 por cada punto porcentual adicional que aumenta el ICCESFAM. CONCLUSIONES: Según el modelo elaborado de evaluación de centros de APS, los centros que siguen el modelo de salud familiar chileno son más efectivos, tanto por sus indicadores técnicos como por la valoración de sus usuarios, que los centros de APS tradicionales.

The World Health Organization (WHO) has contributed to the conceptualization of a Health System stating that it has three main objectives and four functions. The main objective is Health Status, measured in Disability Adjusted Life Expectancy (DALE).The others two are Responsiveness to the people’s Non-Medical Expectations and Equity in Financing. This last is a specific indicator of economic nature. Economics has an increasing role in the health systems and the recognition of this component by actors in health services is more and more important every day. Medical professionals need to understand its meaning and relevance in many senses of medical care. Economic evaluations, mainly cost-effectiveness of health programs and socio-sanitary interventions are more complex to carry out than common social evaluations, whose context is more restricted.When formulating modern health policies, the declared objective is always the improvement and quality of healthcare. Nevertheless, in recent years policy makers have insisted in the need to secure economic rationality of interventions, both inside the program, thus achieving internal technical efficiency, as towards the whole society achieving allocative efficiency. When the purpose is to evaluate health programs, economic evaluation integrates costs with effectiveness and considers the epidemiologic profle and social preferences. The priority setting included in the Health Guarantees Plan (AUGE or GES) established by the Chilean Ministry of Health in 2005 is a clear example of a process of Health Technology Assessment , where cost-effectiveness studies were used to set the program and establish priorities. This is the frst in a series of papers related to economic evaluation of healthcare in-terventions. This paper aims to contribute to the development of this feld, providing basic concepts and its main applications to health care in Chile.

La Organización Mundial de la Salud (OMS) ha contribuido a la conceptualiza-ción de lo que es un sistema de salud, en el cual integra tres objetivos y cuatro funciones. El objetivo principal es la salud, la cual es medida con el indicador Expectativa de Vida Ajustada por Discapacidad (EVAD), los otros dos son Capacidad de Respuesta a las Expectativas No Medicas y la Equidad o Justicia Financiera. Esta última es una condición explícita de carácter económico. La economía tiene un papel creciente en los sistemas de salud y es importante que los actores principales del sistema, los profesionales médicos, estén al tanto de ello y logren comprender su dimensión. Las evaluaciones económicas, principalmente las de costo-efectividad de los programas de salud e intervenciones socio-sanitarias siguen siendo más complejas de realizar que las evaluaciones en otras áreas sociales, cuyo contexto es más restringido o específico. En la formulación de políticas de salud modernas, el objetivo declarado es siempre el de mejorar la calidad de los cuidados y de la atención médica. Sin embargo, ahora se hace insistiendo en que uno de los componentes esenciales de la calidad es la racionalidad económica de las intervenciones, tanto internas al propio programa, logrando eficiencia técnica, como al conjunto de la sociedad logrando eficiencia distributiva. Cuando se trata de evaluar Tecnologías Sanitarias, uno de sus componentes es la evaluación económica que integra costos con efectividad clínica y considera el perfilepidemiológico y las preferencias sociales. Estás últimas se pueden incorporar a través de la valoración de los estados de salud (en “outcomes” como Quality-Adjusted Life-Years -QALY) y en el uso de una tasa de descuento social. La determinación de las condiciones de salud incluidas en el Plan de Garantías en Salud (AUGE o GES) es un ejemplo de un proceso de Evaluación de Tecnologías Sanitarias (ETESA). En dicho proceso se hizo una aproximación a incluir explícitamente la evaluación económica, a través de los estudios de costo-efectividad, en la priorización para determinar las condiciones de salud que se integrarían al plan. Este es el primero de una serie de artículos sobre el ámbito de la evaluación económica de intervenciones de salud la que pretende entregar a la comunidad médica un conjunto de contenidos que dan luces sobre el desarrollo de la disciplina y sus conceptos principales, a la vez que sus aplicaciones posibles a las actividades de la salud en nuestro país.

Background: In the last decades, the number of Universities with medical schools has increased dramatically in our country. Aim: To introduce a conceptual model to estimate the number of physicians that are incorporated to the profession in Chile every year as well as the cumulative number of active physicians in specific time frame. To provide information about the number of available physicians in the country and compare it with the international context. Material and methods: This model includes information about the number of students that are admitted in all medical schools of the country, the dropout rate, the number of immigrant physicians from other countries, and the cumulative number of active physicians in the previous period. Results: There is an increased number of new medical students starting in 1994 that will produce, starting in 2001, a significant increased in the number of new physicians graduated from Chilean Universities. Meanwhile the increased number of new physicians in recent years is mainly explained by a significant increase in immigrant physicians. The number of active physicians estimated by the year 2000 is 18,549 and this number will be 25,704 by the year 2007. With these estimated numbers, we introduce a qualitative model that allowed us to compare the current number of active physicians in Chile with other countries, especially those with a comparable degree of development. This model uses first The Human Development Index and later the per capita income of different countries adjusted by purchasing power in USA. According to these calculations, Chile has a lower number of physicians than similar countries, and this difference will persist, even after the significant increase in the new physicians expected for the new future. Conclusions: Chile continues to have a lower number of physicians than countries with similar human development indices (Rev Méd Chile 2000; 128: 1167-76).

Aceptado en versión corrBackground: Traditionally, medical schools demand their students a high dedication in time, responsibility and integrity. Aim: To assess the predictive capacity of several specific variables, on the academic performance of medical students. Material and methods: All students who entered during 1984-1995 period were studied. The academeic performance was assessed using two indices: an overall evaluation of successfulness as determined by the approval rate in different courses and grade-point average obtained during the first three years at the Medical School. The variables used to predict academic performance were year of enrollment, high school grades, university admission test scores, biomedical and demographic characteristics. All these were meassured at the time when the student was enrolled. Results: Eight hundred and eight students were studied at the end of the third year. The most important predictive variables selected for both performance indices were: high school grades, admission biology test scores, place were high school studies were done, and previous university studies. In addition verbal and mathematics admission academic performance tests scores were selected for grade-point average index. Although, the overall admission score and high school academic performance were significantly associated with the two outcomes, they were not selected in the final models. Conclusions: The best predictors of an optimal academic performance in these medical students were high school grades, admission bilogy test scores, residing in Metropolitan Santiago and previous university studies. (Rev Méd Chile 2000; 128: 671-8).

Background: In the last forty years, a sustained reduction in the gastric cancer and cerebrovascular disease mortality has been recorded. Joossens has postulated that sodium intake has an influence in the natural history of both diseases. Aim: To analyze the mortality caused by both diseases in Chile. Material and methods: The mortality of people aged 35 to 64 years old, due to gastric cancer and cerebrovascular diseases in the period 1955-1994, was analyzed. An analysis according to regions, using temporal series and correlation techniques was performed. Results: In the studied period, the mortality due to gastric cancer decreased by 71.6% in men and by 79.5% in women. Mortality due to cerebrovascular diseases decreased by 56.9% in men and by 63.9% in women. There was a correlation coefficient of + 0.91 between the mortality due to both diseases. Cerebrovascular disease mortality appears as a predictor of gastric cancer mortality in temporal series analysis. Conclusions: Joossenstheories are supported by the present data. Prospective studies should be designed to confirm the hypothesis.

To study the association between body composition of newborn infants, birthweight and altered foetal growth. The lean body mass and fat of 224 newbom infants in low-income families in Santiago, Chile were measured using the anthropometric method of Dauncey. In healthy children the proportion of fat was 16.5%. There was a significant positive association of birthweight with lean body mass (r2 = 88.9%) and with fat content (r2 = 58.2%). Although the fat content constitutes only 16.5% of the birthweight, it explains a great portion of the variation in body weight (58.2%). In the neonates with retarded foetal growth or with low birthweight it was found a different body composition. These neonates had absolute values inferior in terms of both lean body mass and fat content, but only in fat content were they proportionally less than normal neonates or those with obesity. The nutritional deficit of these infants is associated with a bigger risk of perinatal disease, which should be prevented with an adequate alimentation of the mother during pregnancy. The results obtained similar lo previous studies in developed countries, suggest that the estimation of body composition could be useful to evaluate foetal growth at the time of birth

Con el objetivo de estudiar la asociación entre la composición corporal en recién nacidos con el peso al nacer y las alteraciones del crecimiento fetal, se estimó las masas magra y grasa de 224 recién nacidos de familias de bajos ingresos en Santiago de Chile, utilizando el método antropométrico de Dauncey. En el total de estos niños sanos de término la proporción de masa grasa fue 16,5%. Hubo una fuerte y significativa asociación positiva del peso al nacer con la masa magra (r2 = 88,9%) y con la masa grasa (r2= 58,2%). Aunque la masa grasa constituyó sólo 16,5% del peso al nacer, explicó una gran proporción de su varianza (58,2%). En los neonatos con retardo del crecimiento fetal o con bajo índice ponderal hubo una composición corporal particular. Esos recién nacidos tuvieron valores absolutos inferiores tanto de la masa grasa como de la masa magra, pero sólo la masa grasa fue proporcionalmente menor que en los niños normales o con sobrepaso. El déficit nutricional de estos niños está asociado con un mayor riesgo de afecciones perinatales, por lo que debiera ser prevenido con una adecuada alimentación de la madre durante el embarazo. Los resultados obtenidos, similares a los de estudios previos en países desarrollados, sugieren que la estimación de la composición corporal podría ser útil para evaluar el crecimiento fetal al momento del nacimiento