Mortality of white Americans, African Americans, and Canadians: the causes and consequences for health of welfare state institutions and policies

Making the case for a new typology of dental care systems

BACKGROUND AND RATIONALE

Dental care systems have the potential to influence population oral health and patterns of socioeconomic inequalities. Therefore, understanding the impact of the ways in which countries fund, provide, and organize their dental care services is key in the analysis of determinants of oral health. In this commentary we offer a synopsis of recent typologies of healthcare systems, based on a rapid review, and highlight that none of them fit dental care services given the separation of dental care from general healthcare provision in many countries. The paper also summarizes evidence on dental care systems as determinants of population oral health and argues why a new typology of dental care systems is needed.

CHALLENGES AND WAYS FORWARD

We argue that a typology must consider institutional arrangements, structures, and processes behind the provision of dental care, and that specific dimensions/variables that inform the typology should result from a process of discussion and consensus. Some methodological considerations for developing typologies are also discussed, including the challenges in the collection and analysis of data followed by an advanced cluster analysis. Despite their limitations, typologies have evolved into an essential tool for comparing the similarities and differences of healthcare systems across countries. Therefore, a dental specific typology for health systems will be useful for researchers, policymakers, and dental professionals to characterize the provision of dentalcare services in different countries. This will also enable examining their potential role as determinants of population oral health and inequalities.

Part-time work and health in late careers: Evidence from a longitudinal and cross-national study

In this exploratory study, we examine how older workers' part-time employment and health are associated in four countries promoting this type of employment in late careers but with a different welfare regime: the United States, Germany, Sweden, and Italy. Using data from two large representative panel surveys and conducting multichannel sequence analysis, we identified the most typical interlocked employment and health trajectories for each welfare regime and for three different age groups of women and men. We found that there is more heterogeneity in these trajectories in countries with a liberal welfare regime and among older age groups. Overall, women are more strongly represented in the part-time employment trajectories associated with lower health levels. In countries with a social-democratic or corporatist welfare regime, part-time employment in late careers tends to be associated with good health. Our findings suggest that the combination of a statutory right to work part-time in late careers with a more generous welfare regimes, may simultaneously maintain workers’ health and motivate them to remain active in the labor force.

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We explore older people’ part-time work and health trajectories in four countries.

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Trajectories are more heterogeneous in liberal countries and among older groups.

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Women are overrepresented in part-time employment and poor health trajectories.

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In social-democratic countries part-time employment tends to go along with good health.

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Policies that allow part-time employment in late careers may be positive for health.

Comparison of mortality hazard ratios associated with health behaviours in Canada and the United States: a population-based linked health survey study

BACKGROUND

Modern health surveillance and planning requires an understanding of how preventable risk factors impact population health, and how these effects vary between populations. In this study, we compare how smoking, alcohol consumption, diet and physical activity are associated with all-cause mortality in Canada and the United States using comparable individual-level, linked population health survey data and identical model specifications.

METHODS

The Canadian Community Health Survey (CCHS) (2003-2007) and the United States National Health Interview Survey (NHIS) (2000, 2005) linked to individual-level mortality outcomes with follow up to December 31, 2011 were used. Consistent variable definitions were used to estimate country-specific mortality hazard ratios with sex-specific Cox proportional hazard models, including smoking, alcohol, diet and physical activity, sociodemographic indicators and proximal factors including disease history.

RESULTS

A total of 296,407 respondents and 1,813,884 million person-years of follow-up from the CCHS and 58,232 respondents and 497,909 person-years from the NHIS were included. Absolute mortality risk among those with a 'healthy profile' was higher in the United States compared to Canada, especially among women. Adjusted mortality hazard ratios associated with health behaviours were generally of similar magnitude and direction but often stronger in Canada.

CONCLUSION

Even when methodological and population differences are minimal, the association of health behaviours and mortality can vary across populations. It is therefore important to be cautious of between-study variation when aggregating relative effect estimates from differing populations, and when using external effect estimates for population health research and policy development.

Comparative analysis of health system performance in Montreal and New York: the importance of context for interpreting indicators

Although eliminating financial barriers to care is a necessary condition for improving access to health services, it is not sufficient. Given the contrasting health systems with regard to financing and organization of health insurance in the United States and Canada, there is a long history of comparing these countries. We extend the empirical studies on the Canadian and US health systems by comparing access to ambulatory care as measured by hospitalization rates for ambulatory care sensitive conditions (ACSC) in Montreal and New York City. We find that, in New York, ACSC rates were more than twice as high (12.6 per 1000 population) as in Montreal (4.8 per 1000 population). After controlling for age, sex, and number of diagnoses, significant differences in ACSC rates are present in both cities, but are more pronounced in New York. Our findings are consistent with the hypothesis that universal, first-dollar health insurance coverage has contributed to lower ACSC rates in Montreal than New York. However, Montreal's surprisingly low ACSC rate calls for further research.

The Life Course, Cohort Dynamics, and International Differences in Aging Trajectories

In recent years, population health research has focused on understanding the determinants of later-life health. Two strands of that work have focused on (1) international comparisons of later-life health and (2) assessing the early-life origins of disease and disability and the importance of life course processes. However, the less frequently examined intersection of these approaches remains an important frontier. The present study contributes to the integration of these approaches. We use the Health and Retirement Study family of data sets and a cohort dynamic approach to compare functional health trajectories across 12 high-income countries and to examine the role of life course processes and cohort dynamics in contributing to variation in those trajectories. We find substantial international variation in functional health trajectories and an important role of cohort dynamics in generating that variation, with younger cohorts often less healthy at comparable ages than the older cohorts they are replacing. We further find evidence of heterogeneous effects of life course processes on health trajectories. The results have important implications for future trends in morbidity and mortality as well as public policy.

Breast Cancer Care in California and Ontario: Primary Care Protections Greatest Among the Most Socioeconomically Vulnerable Women Living in the Most Underserved Places

BACKGROUND

Better health care among Canada's socioeconomically vulnerable versus America's has not been fully explained. We examined the effects of poverty, health insurance and the supply of primary care physicians on breast cancer care.

METHODS

We analyzed breast cancer data in Ontario (n = 950) and California (n = 6300) between 1996 and 2000 and followed until 2014. We obtained socioeconomic data from censuses, oversampling the poor. We obtained data on the supply of physicians, primary care and specialists. The optimal care criterion was being diagnosed early with node negative disease and received breast conserving surgery followed by adjuvant radiation therapy.

RESULTS

Women in Ontario received more optimal care in communities well supplied by primary care physicians. They were particularly advantaged in the most disadvantaged places: high poverty neighborhoods (rate ratio = 1.65) and communities lacking specialist physicians (rate ratio = 1.33). Canadian advantages were explained by better health insurance coverage and greater primary care access.

CONCLUSIONS

Policy makers ought to ensure that the newly insured are adequately insured. The Medicaid program should be expanded, as intended, across all 50 states. Strengthening America's system of primary care will probably be the best way to ensure that the Affordable Care Act's full benefits are realized.

Inequalities in oral impacts and welfare regimes: analysis of 21 European countries

OBJECTIVE

Very few studies have analysed the relationship between political factors and oral health inequalities, and only one study has compared the magnitude of inequalities in oral health-related quality of life (OHRQoL) across welfare state regimes. This study aimed to compare socioeconomic inequalities in oral impacts on daily life among 21 European countries with different welfare state regimes (Scandinavian, Anglo-Saxon, Bismarckian, Southern, and Eastern).

METHODS

We analysed data from the Eurobarometer 72.3, a survey carried out in 2009 among adults in European countries. Inequalities in oral impacts by education, occupational social class and subjective social status (SSS) were estimated by means of age-standardized prevalence rates, odds ratios (ORs), the relative index of inequality (RII) and the slope index of inequality (SII).

RESULTS

Educational inequalities in the form of social gradients were observed in all welfare regimes. The Scandinavian and Southern welfare regimes also showed gradients for all SEP measures. There were not significant differences in the magnitude of relative inequalities (RII) across welfare state regimes. Absolute educational inequalities were largest in the Anglo-Saxon welfare regime (SII = 17.57; 95% CI: 7.80-27.33) and smallest in the Bismarckian (SII = 3.32; 95% CI: -2.18 to 8.83).

CONCLUSIONS

A significant difference in the magnitude of inequalities across welfare regimes was found for absolute educational inequalities but not for relative inequalities. Welfare state regimes may influence the relationship between knowledge-related resources and oral impacts on daily life.

The Contribution of Health Care and Other Interventions to Black-White Disparities in Life Expectancy, 1980-2007

Black-white mortality disparities remain sizable in the United States. In this study, we use the concept of avoidable/amenable mortality to estimate cause-of-death contributions to the difference in life expectancy between whites and blacks by gender in the United States in 1980, 1993, and 2007. We begin with a review of the concept of "avoidable mortality" and results of prior studies using this cause-of-death classification. We then present the results of our empirical analyses. We classified causes of death as amenable to medical care, sensitive to public health policies and health behaviors, ischemic heart disease, suicide, HIV/AIDS, and all other causes combined. We used vital statistics data on deaths and Census Bureau population estimates and standard demographic decomposition techniques. In 2007, causes of death amenable to medical care continued to account for close to 2 years of the racial difference in life expectancy among men (2.08) and women (1.85). Causes amenable to public health interventions made a larger contribution to the racial difference in life expectancy among men (1.17 years) than women (0.08 years). The contribution of HIV/AIDS substantially widened the racial difference among both men (1.08 years) and women (0.42 years) in 1993, but its contribution declined over time. Despite progress observed over the time period studied, a substantial portion of black-white disparities in mortality could be reduced given more equitable access to medical care and health interventions.

Health Inequalities in Global Context

The existence of social inequalities in health is well established. One strand of research focuses on inequalities in health within a single country. A separate and newer strand of research focuses on the relationship between inequality and average population health across countries. Despite the theorization of (presumably variable) social conditions as "fundamental causes" of disease and health, the cross-national literature has focused on average, aggregate population health as the central outcome. Controversies currently surround macro-structural determinants of overall population health such as income inequality. We advance and redirect these debates by conceptualizing inequalities in health as cross-national variables that are sensitive to social conditions. Using data from 48 World Values Survey countries, representing 74% of the world's population, we examine cross-national variation in inequalities in health. The results reveal substantial variation in health inequalities according to income, education, sex, and migrant status. While higher socioeconomic position is associated with better self-rated health around the globe, the size of the association varies across institutional context, and across dimensions of stratification. There is some evidence that education and income are more strongly associated with self-rated health than sex or migrant status.

Socio-economic inequalities and oral health in Canada and the United States

This paper describes and compares the magnitude of socio-economic inequalities in oral health among adults in Canada and the US over the past 35 years. We analyzed data from nationally representative examination surveys in Canada and the US: Nutrition Canada National Survey (1970-1972, N = 11,546), Canadian Health Measures Survey (2007-2009, N = 3,508), The First National Health and Nutrition Examination Survey (1971-1974, N = 13,131), and National Health and Nutrition Examination Survey (2007-2008, N = 5,707). Oral health outcomes examined were prevalence of edentulism, proportion of individuals having at least 1 untreated decayed tooth, and proportion of individuals having at least 1 filled tooth. Sociodemographic indicators included in our analysis were place of birth, education, and income. Data were age-adjusted, and survey weights were used to account for the complex survey design in making population inferences. Our findings demonstrate that oral health outcomes have improved for adults in both countries. In the 1970s, Canada had a higher prevalence of edentulism and dental decay and lower prevalence of filled teeth. This was also combined with a more pronounced social inequality gradient among place of birth, education, and income groups. Over time, both countries demonstrated a decline in absolute socio-economic inequalities in oral health.

How society shapes the health gradient: work-related health inequalities in a comparative perspective

Analyses in comparative political economy have the potential to contribute to understanding health inequalities within and between societies. This article uses a varieties of capitalism approach that groups high-income countries into coordinated market economies (CME) and liberal market economies (LME) with different labor market institutions and degrees of employment and unemployment protection that may give rise to or mediate work-related health inequalities. We illustrate this approach by presenting two longitudinal comparative studies of unemployment and health in Germany and the United States, an archetypical CME and LME. We find large differences in the relationship between unemployment and health across labor-market and institutional contexts, and these also vary by educational status. Unemployed Americans, especially of low education or not in receipt of unemployment benefits, have the poorest health outcomes. We argue for the development of a broader comparative research agenda on work-related health inequalities that incorporates life course perspectives.

Unemployment and mortality: a comparative study of Germany and the United States

OBJECTIVES

We examined the relationship between unemployment and mortality in Germany, a coordinated market economy, and the United States, a liberal market economy.

METHODS

We followed 2 working-age cohorts from the German Socio-economic Panel and the US Panel Study of Income Dynamics from 1984 to 2005. We defined unemployment as unemployed at the time of survey. We used discrete-time survival analysis, adjusting for potential confounders.

RESULTS

There was an unemployment-mortality association among Americans (relative risk [RR]=2.4; 95% confidence interval [CI]=1.7, 3.4), but not among Germans (RR=1.4; 95% CI=1.0, 2.0). In education-stratified models, there was an association among minimum-skilled (RR=2.6; 95% CI=1.4, 4.7) and medium-skilled (RR=2.4; 95% CI=1.5, 3.8) Americans, but not among minimum- and medium-skilled Germans. There was no association among high-skilled Americans, but an association among high-skilled Germans (RR=3.0; 95% CI=1.3, 7.0), although this was limited to those educated in East Germany. Minimum- and medium-skilled unemployed Americans had the highest absolute risks of dying.

CONCLUSIONS

The higher risk of dying for minimum- and medium-skilled unemployed Americans, not found among Germans, suggests that the unemployment-mortality relationship may be mediated by the institutional and economic environment.

Informal politics and inequity of access to health care in Lebanon

INTRODUCTION

Despite the importance of political institutions in shaping the social environment, the causal impact of politics on health care access and inequalities has been understudied. Even when considered, research tends to focus on the effects of formal macro-political institutions such as the welfare state. We investigate how micro-politics and informal institutions affect access to care.

METHODS

This study uses a mixed-methods approach, combining findings from a household survey (n = 1789) and qualitative interviews (n = 310) in Lebanon. Multivariate logistic regression was employed in the analysis of the survey to examine the effect of political activism on access to health care while controlling for age, sex, socioeconomic status, religious commitment and piety.

RESULTS

We note a significantly positive association between political activism and the probability of receiving health aid (p < .001), with an OR of 4.0 when comparing individuals with the highest political activity to those least active in our sample. Interviews with key informants also reveal that, although a form of "universal coverage" exists in Lebanon whereby any citizen is eligible for coverage of hospitalization fees and treatments, in practice, access to health services is used by political parties and politicians as a deliberate strategy to gain and reward political support from individuals and their families.

CONCLUSIONS

Individuals with higher political activism have better access to health services than others. Informal, micro-level political institutions can have an important impact on health care access and utilization, with potentially detrimental effects on the least politically connected. A truly universal health care system that provides access based on medical need rather than political affiliation is needed to help to alleviate growing health disparities in the Lebanese population.

Burden of disease, health indicators and challenges for epidemiology in North America

BACKGROUND

Commissioned by the International Epidemiological Association, this article is part of a series on burden of disease, health indicators and the challenges faced by epidemiologists in bringing their discoveries to provide equitable benefit to the populations in their regions and globally. This report covers the health status and epidemiological capacity in the North American region (USA and Canada).

METHODS

We assessed data from country-specific sources to identify health priorities and areas of greatest need for modifiable risk factors. We examined inequalities in health as a function of social deprivation. We also reviewed information on epidemiological capacity building and scientific contributions by epidemiologists in the region.

FINDINGS

The USA and Canada enjoy technologically advanced healthcare systems that, in principle, prioritize preventive services. Both countries experience a life expectancy at birth that is higher than the global mean. Health indicator measures are consistently worse in the USA than in Canada for many outcomes, although typically by only marginal amounts. Socio-economic and racial/ethnic disparities in indicators exist for many diseases and risk factors in the USA. To a lesser extent, these social inequalities also exist in Canada, particularly among the Aboriginal populations. Epidemiology is a well-established discipline in the region, with many degree-granting schools, societies and job opportunities in the public and private sectors. North American epidemiologists have made important contributions in disease control and prevention and provide nearly a third of the global scientific output via published papers.

CONCLUSIONS

Critical challenges for North American epidemiologists include social determinants of disease distribution and the underlying inequalities in access to and benefit from preventive services and healthcare, particularly in the USA. The gains in life expectancy also underscore the need for research on health promotion and prevention of disease and disability in older adults. The diversity in epidemiological subspecialties poses new challenges in training and accreditation and has occurred in parallel with a decrease in research funding.

Does racism affect health? Evidence from the United States and the United Kingdom

Blacks have worse overall health than whites in both the United States and the United Kingdom. However, the relative difference in health between the two groups within each cultural context differs between each context. In this article, we attempt to glean insights into these health disparities. We do so by first examining what is currently known about differences in morbidity and mortality for blacks and whites in the United States and the United Kingdom. We then turn to medical examination data by race and country of birth in an attempt to further untangle the complex interplay of socioeconomic status (SES), race, and racism as determinants of health in the United States and the United Kingdom. We find that (1) longer exposure of blacks to the recipient country is a risk for mortality in the United States but not in the United Kingdom; (2) adjustment for SES matters a good deal for mortality in the United States, but less so in the United Kingdom; (3) morbidity indicators do not paint a clear picture of black disadvantage relative to whites in either context; and (4) were one to consider medical examination data alone, differences between the two groups exist only in the United States. Taken together, we conclude that it is possible that the "less racist" United Kingdom provides a healthier environment for blacks than the United States. However, there remain many mysteries that escape simple explanation. Our findings raise more questions than they answer, and the health risks and health status of blacks in the United States are much more complex than previously thought.

Comparing Racial and Immigrant Health Status and Health Care Access in Later Life in Canada and the United States

Il y a peu de recherche comparative en existence sur les expériences de la santé et les conditions de groupes minoritaires au Canada et aux États-Unis, malgré le fait que les deux pays ont des populations racialement diverses avec une proportion significative des immigrants. Cet article explore les disparités raciales et immigrantes en santé et soins d’accès entre les deux pays. L’étude portait sur l’âge mûr et la vieillesse, compte tenu du changement et de la diversité croissante dans la politique de santé et les soins de santé, tel que Medicare. L’analyse de régression logistique des données de l’Enquête de la santé Canada/États-Unis 2002–2003 montre que l’effet conjoint de la race et de la nativité de santé – différences en santé entre indigènes blancs et étrangers blancs et non-blancs est en grande partie négligeable au Canada, mais considérable aux États-Unis. Americains indigènes non-blancs et américains nés à l’étranger au sein des groupes d’âge 45-à-64 et 65-et-plus expériencent une désavantage significative dans l’état de santé et aussi de l’accès aux soins, indépendamment de la couverture d’assurance-maladie et des facteurs démographiques, socio-économiques et de la mode de vie.

Two countries divided by a common language: health systems in the UK and USA

Despite the historic significance of the healthcare reform bill that was passed into law by President Obama in March 2010, the debate still rages. The UK National Health Service (NHS) has featured prominently in the current American debate on healthcare reform, with critics calling attention to its perceived shortcomings. Some of these, such as the existence of 'death panels', can easily be dismissed, but others, such as the cancer survival deficit, cannot. This paper reviews the evidence on outcomes from cancer and other chronic non-communicable diseases, the two leading causes of death in both countries. The headline figures showing better cancer survival in the USA are exaggerated by methodological issues, but a gap remains, due in large part to better outcomes among older people. Outcomes among younger people with chronic disease are, however, much worse in the USA. Paradoxically, given the nature of the debate in the USA so far, those parts of the US health system that get the best results, such as the Veterans' Administration, or the elderly on Medicare, are those that most closely resemble the British NHS - but which are funded somewhat more generously.

Systemic Lupus Erythematosus, Rheumatoid Arthritis, and Postarthroplasty Mortality: A Cross-sectional Analysis from the Nationwide Inpatient Sample

Objective.

Systemic lupus erythematosus (SLE) is a disease of considerable morbidity, and this may place patients at greater risk for poor in-hospital postoperative outcomes for procedures such as arthroplasty. Our aim was to test this hypothesis.

Methods.

We compared the in-hospital postoperative mortality risk for patients with SLE undergoing hip and knee arthroplasty to those with rheumatoid arthritis (RA) and the general population without either condition, using data from the Nationwide Inpatient Sample (1993–2006). We performed parallel, weighted, multivariable logistic regressions to calculate mortality risk stratified by joint site, type of admission, hospital type, income category, race, length of stay, surgical indication, and medical comorbidities.

Results.

The unadjusted mortality rates (per 1000 procedures) for patients with SLE, patients with RA, and controls were 7.4, 3.0, and 6.5, respectively, for nonelective procedures and 2.4, 1.3, and 1.8 for elective procedures. After adjustment for potential confounders, patients with SLE had an OR of 4.0 (95% CI 1.9–8.0) for postoperative mortality with hip replacements and an OR of 1.2 (95% CI 0.2–7.5) for mortality with knee replacements. Mortality risk of patients with RA was not different from that of controls. The adjusted risk estimates for those who underwent arthroplasty before and after 2002 and those who underwent surgery for nonfracture indications were similar.

Conclusion.

Arthroplasty, especially of hips, in patients with SLE is associated with relatively higher postoperative mortality risk.

Comparing population health in the United States and Canada

BACKGROUND

The objective of the paper is to compare population health in the United States (US) and Canada. Although the two countries are very similar in many ways, there are potentially important differences in the levels of social and economic inequality and the organization and financing of and access to health care in the two countries.

METHODS

Data are from the Joint Canada/United States Survey of Health 2002/03. The Health Utilities Index Mark 3 (HUI3) was used to measure overall health-related quality of life (HRQL). Mean HUI3 scores were compared, adjusting for major determinants of health, including body mass index, smoking, education, gender, race, and income. In addition, estimates of life expectancy were compared. Finally, mean HUI3 scores by age and gender and Canadian and US life tables were used to estimate health-adjusted life expectancy (HALE).

RESULTS

Life expectancy in Canada is higher than in the US. For those < 40 years, there were no differences in HRQL between the US and Canada. For the 40+ group, HRQL appears to be higher in Canada. The results comparing the white-only population in both countries were very similar. For a 19-year-old, HALE was 52.0 years in Canada and 49.3 in the US.

CONCLUSIONS

The population of Canada appears to be substantially healthier than the US population with respect to life expectancy, HRQL, and HALE. Factors that account for the difference may include access to health care over the full life span (universal health insurance) and lower levels of social and economic inequality, especially among the elderly.

Neo-liberal economic practices and population health: a cross-national analysis, 1980–2004

Although there has been substantial debate and research concerning the economic impact of neo-liberal practices, there is a paucity of research about the potential relation between neo-liberal economic practices and population health. We assessed the extent to which neo-liberal policies and practices are associated with population health at the national level. We collected data on 119 countries between 1980 and 2004. We measured neo-liberalism using the Fraser Institute’s Economic Freedom of the World (EFW) Index, which gives an overall score as well as a score for each of five different aspects of neo-liberal economic practices: (1) size of government, (2) legal structure and security of property rights, (3) access to sound money, (4) freedom to exchange with foreigners and (5) regulation of credit, labor and business. Our measure of population health was under-five mortality. We controlled for potential mediators (income distribution, social capital and openness of political institutions) and confounders (female literacy, total population, rural population, fertility, gross domestic product per capita and time period). In longitudinal multivariable analyses, we found that the EFW index did not have an effect on child mortality but that two of its components: improved security of property rights and access to sound money were associated with lower under-five mortality (p = 0.017 and p = 0.024, respectively). When stratifying the countries by level of income, less regulation of credit, labor and business was associated with lower under-five mortality in high-income countries (p = 0.001). None of the EFW components were significantly associated with under-five mortality in low-income countries. This analysis suggests that the concept of ‘neo-liberalism’ is not a monolithic entity in its relation to health and that some ‘neo-liberal’ policies are consistent with improved population health. Further work is needed to corroborate or refute these findings.

Socioeconomic inequalities in health dynamics: a comparison of Britain and the United States

Drawing on theory and research on the fundamental causes of health, the life course, and the welfare state, we investigate social inequalities in dynamic self-rated health for working-aged Britons and Americans. We use data from the British Household Panel Survey and Panel Study of Income Dynamics (1990-2004) and a mixture latent Markov model to test a theoretical model of health as a discrete state that may remain stable or change over time. Our contributions are threefold. First, our finding of three distinctive types of health processes (stable good health, stable poor health, and a "mover" health trajectory) represents a more differentiated profile of long-term health than previously shown. Second, we characterize health trajectories in structural terms by suggesting who was more likely to experience what type of health trajectory. Third, our more differentiated picture of dynamic health leads to a more nuanced understanding of comparative health: Although the health advantage of Britons was confirmed, our results also indicate that they were more likely to experience health change. Moreover, the socioeconomic gradient in long-term health was steeper in the US, raising provocative questions about how state policies and practices may affect population health.

Income-related health inequalities in Canada and the United States: a decomposition analysis

OBJECTIVES

We examined income-related inequalities in self-reported health in the United States and Canada and the extent to which they are associated with individual-level risk factors and health care system characteristics.

METHODS

We estimated income inequalities with concentration indexes and curves derived from comparable survey data from the 2002 to 2003 Joint Canada-US Survey of Health. Inequalities were then decomposed by regression and decomposition analysis to distinguish the contributions of various factors.

RESULTS

The distribution of income accounted for close to half of income-related health inequalities in both the United States and Canada. Health care system factors (e.g., unmet needs and health insurance status) and risk factors (e.g., physical inactivity and obesity) contributed more to income-related health inequalities in the United States than to those in Canada.

CONCLUSIONS

Individual-level health risk factors and health care system characteristics have similar associations with health status in both countries, but they both are far more prevalent and much more concentrated among lower-income groups in the United States than in Canada.

Trust of nurse practitioners and physicians among African Americans with hypertension

PURPOSE

To examine correlates of low-income African Americans' level of trust in healthcare providers. Specific aims were to (a) describe the levels and correlations of trust, mistrust, and satisfaction; (b) compare trust scores by provider type (nurse practitioner [NP] and medical doctor) and clinic type (nurse-managed clinic [NMC] and joint-managed clinic [JMC]); and (c) examine the relationship of patient and provider demographic factors (e.g., race concordance) with trust in the provider.

DATA SOURCES

This descriptive cross-sectional study was conducted with 145 low-income African Americans (51% women, 49% men; mean age = 49.4 years). All participants were enrolled in a larger study that examined the effect of psychosocial variables on hypertension outcomes. Participants completed three questionnaires: Trust in Provider Scale, Cultural Mistrust Inventory, and the Michigan Academic Consortium Patient Satisfaction tool. Chart audits were performed to collect clinical data.

CONCLUSIONS

Trust and satisfaction were moderately high, M = 3.9 (0.56), M = 4.1 (0.57), respectively, on the 5-point scales, and cultural mistrust was in the moderate range, M = 3.9 (0.79), on a 7-point scale. No significant differences in mistrust, t(142) =-1.43, p = .155, or satisfaction, t(142) = 0.716, p = .475, were noted by provider type. Trust was significantly higher for patients seen by NPs, t(142) = 2.57, p = .011. Additionally, patients seen in the NMC reported significantly higher levels of trust than those seen in the JMC, t(143) = 3.62, p < .001. Race concordance between provider and patient did not change these findings.

IMPLICATIONS FOR PRACTICE

Low-income African American patients have experienced unequal and discriminatory treatment, which can result in a cultural mistrust of providers; yet, providers in this study were able to engender high trust and satisfaction among these respondents. Still, the sociocultural effects of race concordance require further exploration to better understand the impact on trust in the patient-provider relationship. Finally, the high levels of trust in the NMC may offer a promising solution to the health disparities of African Americans; yet, more research is needed.

Meeting the health literacy needs of immigrant populations

OBJECTIVE

Immigrant populations are vulnerable to serious health disparities, with many immigrants experiencing significantly worse health outcomes, such as higher rates of morbidity and mortality, than other segments of society. Immigrants disproportionately suffer from heart attacks, cancer, diabetes, strokes, HIV/AIDS, and many other serious diseases. These health risks demand effective health communication to help immigrants recognize, minimize, and respond effectively to potential health problems. Yet, while the need for effective communication about health risks is particularly acute, it is also tremendously complicated to communicate effectively with these vulnerable populations.

METHODS

A literature review using online databases was performed.

RESULTS

Immigrants often have significant language and health literacy difficulties, which are further exacerbated by cultural barriers and economic challenges to accessing and making sense of relevant health information.

CONCLUSION

This paper examined the challenges to communicating relevant information about health risks to vulnerable immigrant populations and suggested specific communication strategies for effectively reaching and influencing these groups of people to reduce health disparities and promote public health.

PRACTICE IMPLICATIONS

Communication interventions to educate vulnerable populations need to be strategic and evidence-based. It is important for health educators to adopt culturally sensitive communication practices to reach and influence vulnerable populations. Community participative communication interventions are a valuable strategy for integrating consumers' perspectives into health education efforts and building community commitment to health communication interventions.

Mortality from heart, respiratory, and kidney disease in coal mining areas of Appalachia

PURPOSE

The purpose of this study was to test whether population mortality rates from heart, respiratory and kidney disease were higher as a function of levels of Appalachian coal mining after control for other disease risk factors.

METHODS

The study investigated county-level, age-adjusted mortality rates for the years 2000-2004 for heart, respiratory and kidney disease in relation to tons of coal mined. Four groups of counties were compared: Appalachian counties with more than 4 million tons of coal mined from 2000 to 2004; Appalachian counties with mining at less than 4 million tons, non-Appalachian counties with coal mining, and other non-coal mining counties across the nation. Forms of chronic illness were contrasted with acute illness. Poisson regression models were analyzed separately for male and female mortality rates. Covariates included percent male population, college and high school education rates, poverty rates, race/ethnicity rates, primary care physician supply, rural-urban status, smoking rates and a Southern regional variable.

RESULTS

For both males and females, mortality rates in Appalachian counties with the highest level of coal mining were significantly higher relative to non-mining areas for chronic heart, respiratory and kidney disease, but were not higher for acute forms of illness. Higher rates of acute heart and respiratory mortality were found for non-Appalachian coal mining counties.

CONCLUSIONS

Higher chronic heart, respiratory and kidney disease mortality in coal mining areas may partially reflect environmental exposure to particulate matter or toxic agents present in coal and released in its mining and processing. Differences between Appalachian and non-Appalachian areas may reflect different mining practices, population demographics, or mortality coding variability.

The fall and rise of US inequities in premature mortality: 1960-2002

BACKGROUND

Debates exist as to whether, as overall population health improves, the absolute and relative magnitude of income- and race/ethnicity-related health disparities necessarily increase-or decrease. We accordingly decided to test the hypothesis that health inequities widen-or shrink-in a context of declining mortality rates, by examining annual US mortality data over a 42 year period.

METHODS AND FINDINGS

Using US county mortality data from 1960-2002 and county median family income data from the 1960-2000 decennial censuses, we analyzed the rates of premature mortality (deaths among persons under age 65) and infant death (deaths among persons under age 1) by quintiles of county median family income weighted by county population size. Between 1960 and 2002, as US premature mortality and infant death rates declined in all county income quintiles, socioeconomic and racial/ethnic inequities in premature mortality and infant death (both relative and absolute) shrank between 1966 and 1980, especially for US populations of color; thereafter, the relative health inequities widened and the absolute differences barely changed in magnitude. Had all persons experienced the same yearly age-specific premature mortality rates as the white population living in the highest income quintile, between 1960 and 2002, 14% of the white premature deaths and 30% of the premature deaths among populations of color would not have occurred.

CONCLUSIONS

The observed trends refute arguments that health inequities inevitably widen-or shrink-as population health improves. Instead, the magnitude of health inequalities can fall or rise; it is our job to understand why.

Ethics in public health research: changing patterns of mortality among American Indians

Mortality rates for American Indians (including Alaska Natives) declined for much of the 20th century, but data published by the Indian Health Service indicate that since the mid-1980s, age-adjusted deaths for this population have increased both in absolute terms and compared with rates for the White American population. This increase appears to be primarily because of the direct and indirect effects of type 2 diabetes. Despite increasing appropriations for the Special Diabetes Program for Indians, per capita expenditures for Indian health, including third-party reimbursements, remain substantially lower than those for other Americans and, when adjusted for inflation, have been essentially unchanged since the early 1990s. I argue that inadequate funding for health services has contributed significantly to the increased death rate.

Strategic use of communication to market cancer prevention and control to vulnerable populations

There are significant challenges to communicating relevant cancer prevention and control information to health care consumers due both to the complexities of the health information to be communicated and the complexities of health communication, especially with vulnerable populations. The need for effective communication about cancer risks, early detection, prevention, care, and survivorship is particularly acute, yet also tremendously complex, for reaching vulnerable populations, those groups of people who are most likely to suffer significantly higher levels of morbidity and mortality from cancers than other segments of the population. These vulnerable populations, typically the poorest, lowest educated, and most disenfranchised members of modern society, are heir to serious cancer-related health disparities. Vulnerable populations often have health literacy difficulties, cultural barriers, and economic challenges to accessing and making sense of relevant health information. This paper examines these challenges to communicating relevant information to vulnerable populations and suggests strategies for effectively using different communication media for marketing cancer prevention and control to reduce health disparities and promote public health.

Marijuana use and sexually transmitted infections in young women who were teenage mothers

PURPOSE

Teenage pregnancy and marijuana use are associated with higher risk of contracting sexually transmitted infections (STIs). In this study, we examined the role of early and current marijuana use as it related to STI risk in a sample of young women who were pregnant teenagers, using a variety of statistical models.

METHODS

We recruited 279 pregnant adolescents, ages 12-18, from an urban prenatal clinic as part of a study that was developed to evaluate the long-term effects of prenatal substance exposure. Six years later, they were asked about their substance use and sexual history. The association of early and late marijuana use to lifetime sexual partners and STIs was examined, and then structural equation modeling (SEM) was used to illustrate the associations among marijuana use, number of sexual partners, and STIs.

RESULTS

Bivariate analyses revealed a dose-response effect of early and current marijuana use on STIs in young adulthood. Early and current marijuana use also predicted a higher number of lifetime sexual partners. However, the effect of early marijuana use on STIs was mediated by lifetime number of sexual partners in the SEM, whereas African-American race, more externalizing problems, and a greater number of sexual partners were directly related to more STIs.

CONCLUSIONS

Adolescent pregnancy, early marijuana use, mental health problems, and African-American race were significant risk factors for STIs in young adult women who had become mothers during adolescence. Pregnant teenage girls should be screened for early drug use and mental health problems, because they may benefit the most from the implementation of STI screening and skill-based prevention programs.

Comparing the health of low income and less well educated groups in the United States and Canada

Background

A limited number of health status and health-related quality of life (HRQL) measures have been used for inter-country comparisons of population health. We compared the health of Canadians and Americans using a preference-based measure.

Methods

The Joint Canada/United States Survey of Health (JCUSH) 2002–03 conducted a comprehensive cross-sectional telephone survey on the health of community-dwelling residents in Canada and the US (n = 8688). A preference-based measure, the Health Utilities Index Mark 3 (HUI3), was included in the JCUSH. Health status was analyzed for the entire population and white population only in both countries. Mean HUI3 overall scores were compared for both countries. A linear regression determinants of health model was estimated to account for differences in health between Canada and the US. Estimation with bootstraps was used to derive variance estimates that account for the survey's complex sampling design of clustering and stratification.

Results

Income is associated with health in both countries. In the lowest income quintile, Canadians are healthier than Americans. At lower levels of education, again Canadians are healthier than Americans. Differences in health among subjects in the JCUSH are explained by age, gender, education, income, marital status, and country of residence.

Conclusion

On average, population health in Canada and the US is similar. However, health disparities between Canadians and Americans exist at lower levels of education and income with Americans worse off. The results highlight the usefulness of continuous preference-based measures of population health such as the HUI3.

Inequities in screening for sexually transmitted infections in African American adolescents: can health policy help?

Although rates of sexually transmitted infections (STIs) in African Americans are higher than other populations, there are disparities in the screening and treatment of STIs for African American adolescents. Many African Americans distrust the health care system, resulting in a reluctance to seek health care. Adolescents may lack access to and the resources to pay for health care. This article reviews historical events believed to influence African American distrust of the health care system, discusses socioeconomic factors influencing adolescent access to services, and offers descriptions of services available to assist adolescents in receiving preventative services. Last, potential health policy solutions for nurses are noted.

Flying under the radar: engagement and retention of depressed low-income mothers in a mental health intervention

A randomized trial of in-home psychotherapy for depressive symptoms that targeted low-income mothers of infants and toddlers used innovative design features to reduce stigma and enhance acceptability. Despite these features, advanced practice psychiatric mental health nurses used specialized, relationship-based strategies to engage and retain these high-risk mothers in the intervention. Data revealed that the nurses needed to diligently maintain contact, provide encouragement, use empathy for rapid assessment and response, and control the intensity of the relationship-based contacts in order to retain mothers.

The effect of new insurance coverage on the health status of low-income children in Santa Clara County

OBJECTIVE

To examine whether providing health insurance coverage to undocumented children affects the health of those children.

DATA SOURCES/STUDY SETTING

The data come from a survey of 1235 parents of enrollees in the new insurance program ("Healthy Kids") in Santa Clara County, California. The survey was conducted from August 2003 to July 2004.

STUDY DESIGN

Cross-sectional study using a group of children insured for one year as the study group (N=626) and a group of newly insured children as the comparison group (N=609). Regression analysis is used to adjust for differences in the groups according to a range of characteristics.

DATA COLLECTION

Parents were interviewed by telephone in either English or Spanish (most responded in Spanish). The response rate was 89 percent.

PRINCIPAL FINDINGS

The study group-who were children continuously insured by Healthy Kids for one year-were significantly less likely to be in fair/poor health and to have functional impairments than the comparison group of newly insured children (15.9 percent versus 28.5 percent and 4.5 percent versus 8.4 percent, respectively). Impacts were largest among children who enrolled for a specific medical reason (such as an illness or injury); indeed, the impact on functional limitations was evident only for this subgroup. The study group also had fewer missed school days than the comparison group, but the difference was significant only among children who did not enroll for a medical reason.

CONCLUSIONS

Health insurance coverage of undocumented children in Santa Clara County was associated with significant improvements in children's health status. The size of this association could be overstated, since the comparison sample included some children who enrolled because of an illness or other temporary health problem that would have improved even without insurance coverage. However, even after limiting the study sample to children who did not enroll for a medical reason, a significant association remained between children's reported health and their health coverage. We thus cautiously conclude that Healthy Kids had a favorable impact on children's health.

Self-rated health trajectories in the United States and the United Kingdom: a comparative study

OBJECTIVES

We reviewed literature on comparative social policy and life course research and compared associations between health and socioeconomic circumstances during an 11-year period in the United States and the United Kingdom.

METHODS

We obtained data from the US Panel Study of Income Dynamics and the British Household Panel Survey (1990-2002). We used latent transition analysis to examine change in self-rated health from one discrete state to another; these health trajectories were then associated with socioeconomic measures at the beginning and at the end of the study period.

RESULTS

We identified good and poor latent health states, which remained relatively stable over time. When change occurred, decline rather than improvement was more likely. UK populations were in better health compared with US populations and were more likely to improve over time. Labor market participation was more strongly associated with good health in the United Kingdom than in the United States.

CONCLUSIONS

National policies and practices may be keeping more US workers than UK workers who are in poor health employed, but British policies may give UK workers the chance to return to better health and to the labor force.

Welfare state matters: A typological multilevel analysis of wealthy countries

Building on the social science literature, we hypothesized that population health indicators in wealthy industrialized countries are 'clustered' around welfare state regime types. We tested this hypothesis during a period of welfare state expansion from 1960 to 1994. We categorized data from 19 wealthy countries into 4 different types of welfare state regimes (Social Democratic, Christian Democratic, Liberal and Wage Earner Welfare States). Outcome variables were the infant mortality rate (IMR) and the low birth weight rate (LBW), obtained from the Organization of Economic Co-operation and Development (OECD) Health Data 2000 and from the United Nations Common Statistical Database (UNCSD). A two-level multilevel model was constructed, and fixed effects of welfare state were tested. Through the 39 years analyzed, Social Democratic countries exhibited a significantly better population health status, i.e., lower infant mortality rate and low birth weight rate, compared to other countries. Twenty percent of the difference in infant mortality rate among countries could be explained by the type of welfare state, and about 10% for low birth weight rate. The gap between Social Democracies and other countries widened over the 1990s. Our results confirm that countries exhibit distinctive levels of population health by welfare regime types even when adjusted by the level of economic development (GDP per capita) and intra-country correlations. It implies that countries, as groups, adopt similar policies or through any other ways, achieve similar level of health status. Proposed mechanisms of such process and suggestions for future research directions are presented in the discussion.

Evidence into policy and practice? Measuring the progress of U.S. and U.K. policies to tackle disparities and inequalities in U.S. and U.K. health and health care

Health policy in both the United States and the United Kingdom has recently shifted toward a much greater concern with disparities and inequalities in health and health care. As evidence for these disparities and inequalities mounts, the different approaches in each country present specific challenges for policy and practice. These differences are most apparent in the mechanisms by which the progress of such policies is measured. This article compares the United States' and United Kingdom's strategies to gauge the challenges for policymakers in order to inform policy and practice. A cross-national comparison of selected measurement mechanisms identifies lessons for policy and practice in both countries.

The burden of disease associated with being African-American in the United States and the contribution of socio-economic status

The burden of disease associated with being African-American in the US, and the contribution of socio-economic status (SES) to that burden have not been quantified. We derived burden of disease estimates for African-Americans and whites by age group, with and without adjustment for SES (income and education). We used (1) EQ-5D Index scores from the 2000 US Medical Expenditure Panel Survey to derive quality-adjusted life year (QALY) compatible estimates of health-related quality of life (HRQL); (2) 1990-1992 US National Health Interview Survey data linked to National Death Index data through 1995 to derive mortality risks; and (3) 2000 US mortality data from the National Center for Health Statistics to derive current mortality estimates for the US population. We found that relative to whites, African-Americans suffer 67,000 more deaths annually, resulting in 2.2 million years of life lost, and 1.1 million years after SES adjustment. Total QALYs lost (HRQL and mortality) dropped from 2.3 million to 902,000 after SES adjustment. SES differences between African-Americans and whites appear to explain all the HRQL disparity but only half the mortality disparity. Better understanding of the disparate effects of SES may inform interventions to address health disparities adversely affecting African-Americans.