Major reduction in AIDS-mortality inequalities after HAART: the importance of absolute differences in evaluating interventions.

This study estimates the magnitude of inequalities in AIDS mortality in the period when highly active antiretroviral therapy (HAART) was introduced and after its widespread dissemination in the Region of Madrid, Spain. Two population cohorts were constructed by linking records from 1996 and 2001 population censuses with mortality registry records after initial and full implementation of HAART, respectively. Absolute and relative differences in AIDS mortality in people aged 20-49 years were estimated in each population cohort according to neighbourhood and individual socioeconomic position. The absolute difference in mortality between neighbourhoods with highest and lowest socioeconomic position (unemployment rate, per capita income) declined from about 30/100,000 person-years in the 1996 population cohort to 8/100,000 person-years in the 2001 population cohort. The absolute difference in mortality between individuals with the highest and lowest socioeconomic position fell from about 60/100,000 person-years in the first cohort to about 20/100,000 in the second. Relative differences in mortality by neighbourhood socioeconomic position and by individual education level also decreased in the 2001 cohort with respect to the 1996 cohort. Although relative differences by individual occupation increased, there was no evidence of a significant change. These findings show major reduction in absolute socioeconomic differences in AIDS mortality after HAART and indicate that the use of relative differences alone may be inadequate to fully evaluate the results of health interventions.

Socioeconomic environment, availability of sports facilities, and jogging, swimming and gym use.

The aim of the study was to evaluate the association of the availability of sports facilities and socioeconomic environment with jogging, swimming and gym use in Spain. The indicators of availability of sports facilities were the number of swimming pools and the number of gyms per 10,000 population. The indicators of socioeconomic environment were average provincial income and provincial unemployment rate. The number of sports facilities was not related with either swimming or gym use and the indicators of socioeconomic environment were not associated with swimming in either sex, or with gym use in men. The findings of this study do not support the hypotheses proposed in previous investigations to explain the consistent relation between socioeconomic environment and lack of physical activity.

Socioeconomic patterns in the use of public and private health services and equity in health care.

BACKGROUND: Several studies in wealthy countries suggest that utilization of GP and hospital services, after adjusting for health care need, is equitable or pro-poor, whereas specialist care tends to favour the better off. Horizontal equity in these studies has not been evaluated appropriately, since the use of healthcare services is analysed without distinguishing between public and private services. The purpose of this study is to estimate the relation between socioeconomic position and health services use to determine whether the findings are compatible with the attainment of horizontal equity: equal use of public healthcare services for equal need. METHODS: Data from a sample of 18,837 Spanish subjects were analysed to calculate the percentage of use of public and private general practitioner (GP), specialist and hospital care according to three indicators of socioeconomic position: educational level, social class and income. The percentage ratio was used to estimate the magnitude of the relation between each measure of socioeconomic position and the use of each health service. RESULTS: After adjusting for age, sex and number of chronic diseases, a gradient was observed in the magnitude of the percentage ratio for public GP visits and hospitalisation: persons in the lowest socioeconomic position were 61-88% more likely to visit public GPs and 39-57% more likely to use public hospitalisation than those in the highest socioeconomic position. In general, the percentage ratio did not show significant socioeconomic differences in the use of public sector specialists. The magnitude of the percentage ratio in the use of the three private services also showed a socioeconomic gradient, but in exactly the opposite direction of the gradient observed in the public services. CONCLUSION: These findings show inequity in GP visits and hospitalisations, favouring the lower socioeconomic groups, and equity in the use of the specialist physician. These inequities could represent an overuse of public healthcare services or could be due to the fact that persons in high socioeconomic positions choose to use private health services.

The association of current and sustained area-based adverse socioeconomic environment with physical inactivity.

This paper evaluates the association between socioeconomic environment in the province of residence and physical inactivity, using measures of current and sustained area-based adverse socioeconomic environment. The analysis included 19,324 individuals representative of the Spanish non-institutionalised population aged 16-74 years. The measure of association estimated was the prevalence odds ratio for physical inactivity by current gross domestic product per capita (GDPpc) and current Gini coefficient, and by number of times each province has had a low GDPpc and number of times each province has had a high Gini coefficient in the last two decades. After adjusting for age, individual socioeconomic characteristics, and number of sports facilities per 1,000 population, the odds ratio for physical inactivity in residents of provinces with the lowest current GDPpc versus those with the highest was 1.64 in men and 2.01 in women. The odds ratio in residents of provinces that had always been among those with the lowest GDPpc versus residents in provinces that had never been among those with lowest GDPpc was 1.54 in men and 1.91 in women. Neither the current Gini coefficient nor the indicator that reflects sustained high Gini coefficient were associated with physical inactivity. These findings show that physical inactivity is associated with current socioeconomic context and with the duration of exposure of the area of residence to adverse socioeconomic circumstances when the indicators of socioeconomic environment are based on GDPpc, but not on income inequality. Also, this association is not explained by individual socioeconomic characteristics or the number of sports facilities.

[Association of income with use of and access to health services in Spain at the beginning of the XXI century]. / Asociación de los ingresos económicos con la utilización y la accesibilidad de los servicios sanitarios en España al inicio del siglo XXI.

OBJECTIVE: To estimate the association of household income and provincial income with visits to general practitioners and specialists and with hospitalization and to determine whether waiting times to access these services vary with both economic variables. METHOD: Data from the 2001 National Health Survey were used. The association was estimated by sex- and age-adjusted odds ratios; in the case of per capita income, odds ratios were also adjusted for household income. Percentiles and the geometric mean of waiting times in each health service were estimated and the statistical significance of their association with both economic variables was evaluated. RESULTS: Subjects with the lowest household income showed the highest frequency of visits to general practitioners and hospitalization, although they waited longer for hospital admission. Subjects with the lowest household income also showed the lowest frequency of specialist visits: the odds ratio in the lowest income quartile with respect to the highest income quartile was 0.73 (95% CI: 0.62-0.87). However, when only visits to specialists working in the public system were analyzed, the lowest frequency of visits was observed in subjects with the highest household income. No differences were found in health services utilization or in waiting times according to provincial income. CONCLUSIONS: The frequency of specialist visits according to household income shows a different pattern from that observed for visits to general practitioners and hospitalizations. The longest waiting times for admission to hospital were observed in subjects with the lowest household income.

Trends of socioeconomic inequalities and socioeconomic inequalities in self-perceived health in Spain.

OBJECTIVE: To study the trends of socioeconomic inequalities and socioeconomic inequalities in self-perceived health in Spain between 1987 and 2001. METHODS: We estimated the distribution of educational level and per capita provincial income, and the differences in less-than-good self-perceived health by educational level and per capita provincial income in each period. RESULTS: The percentage of the population that had completed secondary or higher education was larger and inequality in per capita provincial income was smaller in 2001 than in 1987. In general, the differences in less-than-good self-perceived health by educational level and provincial income were greater in 2001 than in 1987, in both absolute and relative terms. However, when the effect of residual correlation within provinces was taken into account, the differences by per capita provincial income were smaller in 1987 than in 2001. CONCLUSIONS: The redistribution of socioeconomic resources achieves greater social justice, but probably does not lead to reduced health inequalities in all cases.

Association of adult socioeconomic position with hypertension in older people.

OBJECTIVE: To determine the role of obesity, adult behavioural risk factors, and markers of specific childhood exposures in the association between adult socioeconomic position and hypertension in a cohort of people aged 60 years and older. DESIGN: Cross sectional study. SETTING: Spain. PARTICIPANTS: 4009 subjects representative of the Spanish non-institutionalised population aged 60 years and older. MAIN OUTCOME MEASURE: Prevalence of hyperteMarinhonsion according to education and social class, and proportion of excess difference in hypertension prevalence in lower socioeconomic groups explained by different risk factors for hypertension. RESULTS: The highest prevalence of hypertension was seen in subjects with less education and in those belonging to a low social class. In men, the hypertension risk factors analysed did not explain the difference in prevalence by education, but they explained almost half of the difference by social class. In women, these risk factors explained the differences in hypertension prevalence by education and a substantial part of the differences by social class. Central and general obesity, and physical inactivity were the risk factors that were the most important in this association in women. CONCLUSIONS: In women, socioeconomic position has no direct effect on hypertension in the case of education and only a small effect in the case of social class. In contrast, most of the effect of education and half of the effect of social class on hypertension in men is direct or, at least, is not explained by the risk factors analysed. The mechanisms that can explain the association between socioeconomic position and hypertension in older men remain to be established.

Decreasing socioeconomic inequalities and increasing health inequalities in Spain: a case study.

OBJECTIVES: We examined the evolution of income inequalities and health inequalities in Spain from the time of the country's entry into the European Union. METHODS: We estimated distributions of provincial income and household income, relations of provincial income with mortality and disability, and relations of household income with disability in 1984-1986 and 1999-2001. RESULTS: Inequalities in average provincial income and household income were lower in 2000 than in 1985. Differences in mortality and disability according to income were greater in 2000 than in 1985, in both absolute and relative terms, except for differences in mortality among individuals aged 25 to 44 years. In most cases, differences in mortality from leading causes of death and differences in major types of disabilities were also greater in 2000. CONCLUSIONS: Our results show that redistribution of income might achieve greater social justice but probably does not lead to reduced health inequalities, despite observed improvements in material circumstances as well as in most health indicators among disadvantaged population groups.

Income in large residential areas and premature mortality in six countries of the European Union.

We study the relation between per capita income and mortality within six countries of the European Union - Finland, the Netherlands, Belgium, France, Italy and Spain - in 1981-1985 and 1996-2000. We obtained information on gross domestic product per capita (GDPpc) and mortality in large residential areas. The areas in each country were grouped in quintiles as a function of GDPpc. In 1996-2000, a negative gradient was seen in premature mortality from all causes in men and women in accordance with the GDPpc quintile, except in the Netherlands and in women in Finland. In Belgium, France, Italy and Spain, the impact of GDPpc on premature mortality was stronger in 1996-2000 than in 1981-1985. All six countries showed a negative gradient in premature mortality from cardiovascular disease by GDPpc. The pathways by which residential area with lower wealth is associated with higher mortality are probably related with investment in economic and social resources over time, although for some causes of death, this association is not seen in some countries due to specific historic and cultural circumstances.

Occupational social class and mortality in a population of men economically active: the contribution of education and employment situation.

This study examines how education and employment situation contribute to the association between a classification of occupational class based on skill assets and mortality from different causes of death. Data were obtained by linking records from the 1996 population census for Spanish men aged 35-64 residing in Madrid with 1996 and 1997 mortality records. The risk of mortality was higher in skilled, semi-skilled and unskilled workers than in higher and lower managerial and professional workers. Adjusting for educational level substantially decreased the magnitude of the gradient. The decrease in the gradient after adjusting for employment situation was much smaller. Except in the case of mortality from respiratory diseases, the mortality gradient disappeared after adjusting for both variables. These results show that education and, to a much lesser degree, employment situation explain part of the social gradient observed in mortality from all causes and from broad causes of death, except from respiratory diseases.

[Material well-being of the province of residence and leisure-time physical inactivity]. / Bienestar material de la provincia de residencia e inactividad física.

OBJECTIVE: To estimate the association between material wellbeing of the province of residence and leisure-time physical inactivity in the Spanish population aged 16 years and older. METHODS: We used data from the Survey on Disabilities, Impairments and Health Status carried out by the Statistical National Institute in 1999. We analyse 24,561 women and 21,133 men. Respondents were classified as inactive if they reported no leisure-time physical activity. The measure of material wellbeing was the per capita income of the province of residence grouped in quartiles. The measure of the association between per capita income and physical inactivity was the odds ratio (OR) estimated from logit multilevel models. RESULTS: Association between per capita income and physical inactivity was observed in people aged 45 years and older. The lower prevalence of physical inactivity was observed in provinces with the higher per capita income. However the higher OR was found in quartile 2 of per capita income, because no significant difference was observed between quartile 4 (richest) and quartile 1 (poorest). After adjusting for socioeconomic characteristics and other individual variables, association remained significant in women and disappeared in men. In women, association between per capita income and physical inactivity was higher in the population group with lower personal income. CONCLUSIONS: Results suggest that physical inactivity in women aged 45 years and older could be related not only with individual characteristics but with the socioeconomic context of the area of residence.

Socioeconomic position in childhood and cardiovascular risk factors in older Spanish people.

OBJECTIVE: To investigate the association between childhood social class and the prevalence of cardiovascular risk factors in the elderly. METHODS: Cross-sectional study of 4009 subjects representative of the Spanish non-institutionalized population aged >or =60 years, for whom information was available on father's occupation. We estimated the prevalence of hypertension, obesity, diabetes mellitus, physical inactivity, smoking, and alcohol intake. RESULTS: Belonging to a working social class in childhood is associated with increased hypertension, having ever smoked, and heavy alcohol intake, independent of adult social class in men. No association was found between social class in childhood and the other cardiovascular risk factors in men. Belonging to a working social class in childhood is associated with increased general obesity, abdominal obesity, diabetes mellitus, and physical inactivity in women, but the size of the association for abdominal obesity and diabetes mellitus decreases and the statistical significance disappears after adjusting for adult social class. The highest smoking prevalence was observed in women who were in social class I in childhood and the lowest in women who were in social class IV. CONCLUSIONS: The results of this study show increased prevalence of some cardiovascular risk factors in men who belong to a working social class in childhood, but they do not support the existing evidence about an association between adverse social circumstances in childhood and increased prevalence of cardiovascular risk factors in later life in women.

The size of educational differences in mortality from specific causes of death in men and women.

This study examines the association between education and mortality from specific causes of death based on mortality records for 1996 and 1997, and 1996 population census data from the Region of Madrid (Spain). Poisson regression models were used to estimate the percentage increase in mortality associated with 1 year less education. The percentage increases in mortality from stomach cancer, lung, bladder and liver cancers, for aids, chronic obstructive pulmonary disease, pneumonia and influenza, and chronic liver disease and cirrhosis were higher in men than in women, whereas the percentage increases in mortality from colon cancer, diabetes mellitus, ischemic heart disease and nephritis, nephrosis and nephrotic syndrome were higher in women. The results found for some causes of death--lung cancer, ischemic heart disease, diabetes mellitus and chronic obstructive pulmonary disease--reflect the variations by educational level in the prevalence of lifestyle-related risk factors in men and women. Various hypotheses have been suggested for other causes of death, but it is not known why the magnitude of the association between education and mortality from some causes of death differs between men and women. Future studies of this subject may provide some clues as to the underlying mechanisms of this association.

Trends in the association between average income, poverty and income inequality and life expectancy in Spain.

In this paper, we study the relation between life expectancy and both average income and measures of income inequality in 1980 and 1990, using the 17 Spanish regions as units of analysis. Average income was measured as average total income per household. The indicators of income inequality used were three measures of relative poverty-the percentage of households with total income less than 25%, 40% and 50% of the average total household income-the Gini index and the Atkinson indices with parameters alpha=1, 1.5 and 2. Pearson and partial correlation coefficients were used to evaluate the association between average income and measures of income inequality and life expectancy. None of the correlation coefficients for the association between life expectancy and average household income was significant for men. The association between life expectancy and average household income in women, adjusted for any of the measures of income inequality, was significant in 1980, although this association decreased or disappeared in 1990 after adjusting for measures of poverty. In both men and women, the partial correlation coefficients between life expectancy and the measures of relative income adjusted for average income were positive in 1980 and negative in 1990, although none of them was significant. The results with regard to women confirm the hypothesis that life expectancy in the developed countries has become more dissociated from average income level and more associated with income inequality. The absence of a relation in men in 1990 may be due to the large impact of premature mortality from AIDS in regions with the highest average total income per household and/or smallest income inequality.

Comparing social inequalities in health in Spain: 1987 and 1995/97.

To evaluate the trend in social inequalities in health in Spain between 1987 and 1995/97, we carried out a secondary analysis of the Spanish National Interview Surveys from 1987, 1995 and 1997. We studied less-than-good perceived general health and four chronic conditions--heart disease, diabetes mellitus, chronic bronchitis/asthma and allergies--by social class and educational level in men and women aged 25-74 years. Among men, the age-adjusted prevalence rate ratio of less-than-good perceived general health by social class decreased from 1.32 to 1.23 between 1987 and 1995,97: however, the prevalence rate ratio by educational level increased from 1.47 to 1.57. Among women, the prevalence rate ratio of less-than-good perceived general health increased between the first and second period as much by social class from 1.18 to 1.26, as by educational level--from 1.59 to 1.66. For heart disease the age-adjusted prevalence rate ratio by social class among men was 1.12 in 1987 and 0.72 in 1995/97, while the prevalence rate ratio by educational level was around I in both periods, among women, the prevalence rate ratio for heart disease by social class was the same in 1987 and in 1995/97, but the prevalence rate ratio by educational level increased between the first and second period. For diabetes mellitus and chronic bronchitis/asthma, the prevalence rate ratio increased by social class and educational level between the first and second period in both men and women. Finally, the prevalence rate ratio for allergies was always < 1, although its magnitude increased between 1987 and 1995/97. In general, health inequalities were larger by educational level than by social class and were larger in women than in men. Inequalities in perceived general health, diabetes mellitus and chronic bronchitis/asthma increased in Spain between 1987 and 1995/97.