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STUDY OBJECTIVE: The evidence supporting the effect of income inequality on health has been largely observed in societies far more egalitarian than the US. This study examines the cross sectional multilevel associations between income inequality and self rated poor health in Chile; a society more unequal than the US. DESIGN: A multilevel statistical framework of 98 344 people nested within 61 978 households nested within 285 communities nested within 13 regions. SETTING: The 2000 National Socioeconomic Characterization Survey (CASEN) data from Chile. PARTICIPANTS: Adults aged 18 and above. The outcome was a dichotomised self rated health (0 if very good, good or average; 1 if poor, or very poor). Individual level exposures included age, sex, ethnicity, marital status, education, employment status, type of health insurance, and household level exposures include income and residential setting (urban/rural). Community level exposures included the Gini coefficient and median income. MAIN RESULTS: Controlling for individual/household predictors, a significant gradient was observed between income and poor self rated health, with very poor most likely to report poor health (OR: 2.94) followed by poor (OR: 2.77), low (OR: 2.06), middle (OR: 1.73), high (OR: 1.38) as compared with the very high income earners. Controlling for household and community effects of income, a significant effect of community income inequality was observed (OR:1.22). CONCLUSIONS: Household income does not explain any of the between community differences; neither does it account for the effect of community income inequality on self rated health, with more unequal communities associated with a greater probability of reporting poor health.

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BACKGROUND: In the last two decades, Chile has experienced advances in economical development and global health indicators. However, gender inequities persist in particular related to access to health services and financing of health insurance. AIM: To examine gender inequities in the access to health care in Chile. MATERIAL AND METHODS: An analysis of data obtained from a serial national survey applied to assess social policies (CASEN) carried out by the Ministry of Planning. During the survey 45,379 and 48,107 dwellings were interviewed in 1994 and in 1998, respectively. RESULTS: Women use health services 1.5 times more often, their salaries are 30 per cent lower in all socioeconomic strata. Besides, in the private health sector, women pay higher insurance premiums than men. Men of less than two years of age have 2.5 times more preventive consultations than girls. This difference, although of lesser magnitude, is also observed in people over 60 years. Women of high income quintiles and users of private health insurance have a better access to preventive consultations but not to specialized care. CONCLUSIONS: An improvement in equitable access of women to health care and financing is recommended. Also, monitoring systems to survey these indicators for women should improve their efficiency.

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OBJECTIVE: Previous research has shown that controlling blood glucose improves short-term and long-term outcomes among patients who have either type 1 or type 2 diabetes. The objective of this study was to investigate, in a developing country, the effectiveness of an intervention that included patient education, self-monitoring of blood glucose, and determination of the level of glycosylated hemoglobin (HbA1c). METHODS: The patients were grouped into three categories, taking into account such clinical manifestations as the duration of their diabetes, its treatment, and their hospitalization history. After the inclusion and exclusion criteria were applied, the persons were randomly assigned to two groups. One group (210 patients) received the educational intervention, and the control group (206 patients) received customary care. The intervention group received educational information needed for self-monitoring of blood glucose and for the self-evaluation of positive and negative behaviors related to metabolic control of the disease. RESULTS: The two groups were similar with respect to age (mean of 52.3 and 50.5 years) and to the proportion of patients with type 1 diabetes (13.8% and 16.0%). There were no initial differences in the average concentration of HbA1c in the two groups (8.9% +/- 0.1% and 8.9% +/- 1.4%). A total of 50 persons dropped out of the study, 14.8% of those in the intervention group and 9.2% of those in the control group. In the intervention group, compliance with dietary recommendations increased by 43.5%, from 57.5% at the beginning of the study to 82.5% at the end (P < 0.001); in the control group there was also a change but it was not significant. Although patients with a high initial HbA1c concentration were underrepresented in this study, the average HbA1c concentration declined significantly in the intervention group (-0.4% +/- 1.1%, P = 0.001) but not in the control group (-0.1% +/- 0.1%). CONCLUSIONS: In one developing country, educating patients about diabetes helped improve metabolic control, a fact that can be attributed mainly to the intervention's positive impact on those persons' diet.

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BACKGROUND: There is little information about the real prevalence of hypertension in Chile. AIM: To assess the adjusted prevalence of hypertension and its main therapeutic measures among adults living in Valparaiso, Chile. MATERIALS AND METHODS: A random sample of dwellings in Valparaiso was chosen. Among these, an individual of 25 to 64 years old was randomly surveyed for risk factors for chronic diseases and sociodemographic parameters. Blood pressure, weight, height, oral glucose tolerance test, fasting cholesterol and triglycerides were also measured. Prevalence was pondered according to age, sex, and probability of selection in the dwelling interior. RESULTS: Three thousand one hundred twelve individuals were studied. The adjusted prevalence of hypertension was 11.4% (11.6% among females and 10.6% among men). The prevalence increased along with age from 3 and 1.9% in men and women of 25 to 34 years old respectively, to 18.2 and 27.4% among men and women of 55 to 64 years old (p < 0.01). People of low socioeconomic level had a higher prevalence of hypertension than those of high socioeconomic level (14.2 and 9.3% respectively, P < 0.05). Diabetes, obesity and hypercholesterolemia were significantly more frequent in subjects with hypertension than in the general population. Forty-four percent of diagnosed hypertensives were receiving medications (angiotensin converting enzyme inhibitors 40%, calcium antagonists 34%, beta blockers 22%). Twenty five percent of patients were treated with a combination of medications. Of those treated, only 22% had normal blood pressure levels at the moment of examination. CONCLUSIONS: High blood pressure is an important public health problem that requires more efficient detection and treatment programs.

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BACKGROUND: In the last decades, chronic non communicable diseases are becoming the main cause of disability and mortality among adults. The risk factor surveillance and management is the most efficient mean of reducing the impact of these diseases. AIM: To report the results of a non communicable disease risk factor surveillance program in Valparaiso, Chile. MATERIAL AND METHODS: A random samples of people aged 25 to 64 years old living in Valparaiso, Chile was studied. Subjects were questioned about smoking and physical activity habits. Blood pressure, height and weight were measured using standardized techniques at their homes and blood samples were obtained to measure serum lipid levels and oral glucose tolerance test at the nearest outpatient clinic. RESULTS: Of the initial 3852 homes selected, 752 individuals did no agree to answer the inquiry, therefore 3120 subjects were finally interviewed. Of these, 40.6% were smokers, 15% drank alcohol in two or more occasions per month, 84.6% were physically inactive, 19.7% had a body mass index over 30 kg/m2, 11.1% had high blood pressure, 3.9% were diabetic and 46.9% had high serum cholesterol levels. CONCLUSIONS: The basal survey for the CARMEN program shows a high prevalence of cardiovascular risk factors among Chileans.

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A representative sample from the adult population of metropolitan Santiago was surveyed for prevalence and modality of alcohol consumption. The "problem drinker" was identified according to the CAGE questionnaire. Socioeconomic situation was classified according to the method of Graffar. 70% of male and 50% of female drinkers consumed less than 400 ml of ethanol per month. Prevalence of drinking in males and females was: all categories 56.2 and 19.8%, regular drinkers 40.8 and 14.4%; heavy drinkers 4 and 0.82% and problem drinkers 12.4 and 1.5%, respectively. 85% were weekend drinkers, 11% consumed alcohol throughout the week. Males consumed mostly wine and mixed alcoholic beverages, females mostly the latter. In males, drinking was related to age and not to socioeconomic condition, except for problem drinkers who were mostly found in the low category. Females problem drinkers were found mostly in the high socioeconomic group. These data may be used in planing intervention strategies to prevent damage caused by alcohol consumption.

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Risk factors for chronic diseases were studied in a random sample of 475 males and 728 females from the Metropolitan area of Santiago. A questionnaire was used to estimate the consumption of alcohol and tobacco and the level of physical activity. Weight and height were measured and socio-economic situation was classified according to Graffar. Prevalence rates for males and females were: hypertension 8.6 and 9.1%; obesity 13.2 and 22.7%; present sokers 50.7 and 43.4%; sedentarism 75.6 and 86.9%; alcohol consumption 56.2 and 19.8%. Thus, women show higher rates than males for hypertension, obesity and sedentarism. They smoked as much as males and consumed less alcohol. Among women a higher prevalence of obesity, alcohol consumption and sedentarism was observed in lower socio-economic classes. Among males, only sedentarism was more prevalent in lower socio-economic classes. The number of risk factors present was 1 in 28.6% of the population; 2 in 40.1%; 3 in 22.1%; 4 in 3.7% and 5 in 0.1%. Absence of risk factors was observed in only 5.4% of the population. The present data may help to design preventive strategies for diseases related to these risk factors.

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