Equal access to treatment? Population-based follow-up of drugs dispensed to patients after acute myocardial infarction in Sweden

Oral anticoagulation therapy initiation in patients with atrial fibrillation in relation to world region of origin: a register-based nationwide study

BACKGROUND

Atrial fibrillation (AF) is the most common sustained arrhythmia and results in a high risk of stroke. The number of immigrants is increasing globally, but little is known about potential differences in AF care across migrant populations.

AIM

To investigate if initiation of oral anticoagulation therapy (OAC) differs for patients with incident AF in relation to country of origin.

METHODS

A nationwide register-based study covering 1999-2017. AF was defined as a first-time diagnosis of AF and a high risk of stroke. Stroke risk was defined according to guidelines from the European Society of Cardiology (ESC). Poisson regression adjusted for sex, age, socioeconomic position and comorbidity was made to compute incidence rate ratios (IRR) for initiation of OAC.

RESULTS

The AF population included 254 586 individuals of Danish origin, 6673 of Western origin and 3757 of non-Western origin. Overall, OAC was initiated within -30/+90 days relative to the AF diagnosis in 50.3% of individuals of Danish origin initiated OAC, 49.6% of Western origin and 44.5% of non-Western origin. Immigrants from non-Western countries had significantly lower adjusted IRR of initiating OAC according to all ESC guidelines compared with patients of Danish origin. The adjusted IRRs ranged from 0.73 (95% CI: 0.66 to 0.80) following the launch of the 2010 ESC guideline to 0.89 (95% CI: 0.82 to 0.97) following the launch of the 2001 ESC guideline.

CONCLUSION

Patients with AF with a high risk of stroke of non-Western origin have persistently experienced a lower chance of initiating OAC compared with patients of Danish origin during the last decades.

Disparities in cardiovascular disease and treatment in the Nordic countries

The Nordic countries, including Denmark, Finland, Iceland, Norway, and Sweden have seen a steep decline in cardiovascular mortality in recent decades. They are among the most egalitarian countries by several measures, and all have universal, publicly funded welfare systems providing healthcare for all citizens. However, despite these seemingly ideal conditions, disparities in access to cardiovascular care and outcomes persist. To address this challenge, The Lancet Region Health-Europe convened experts from a broad range of countries to summarize the current state of knowledge on cardiovascular disease disparities across Europe. This Series Paper presents the main challenges in Nordic countries based on evidence from high-quality nationwide registries. Focusing on major cardiovascular health determinants, areas in need of improvement were identified. There is a need for addressing structural causes underlying these disparities, such as poverty and discrimination, but also to improve access to healthcare in deprived neighborhoods and to address underlying social determinants of health that may mitigate disparities in cardiovascular outcomes. Overall, while the Nordic countries have made great strides in promoting egalitarianism and providing universal healthcare, there is still much work to be done to ensure equitable access to care and improved cardiovascular outcomes for all members of society.

Barriers to access of healthcare services by the immigrant population in Scandinavia: a scoping review protocol

INTRODUCTION

Access to healthcare services for legal immigrants in Scandinavia is part of the policy agenda of the various governments as they strive to provide equal healthcare services to its citizens. Legal immigrants have the same rights as natives; however, studies have shown that there are inequalities in access to healthcare services between legal immigrants and natives. The extent of access depends on several factors, including organisational, social, financial and cultural factors. The lack of these factors acts as a barrier to access of healthcare services. The aim of this review is to map and report the evidence available on the barriers to access of healthcare services by legal immigrants in Scandinavia.

METHODS AND ANALYSIS

We will adopt the six-stage framework developed by Arksey and O'Malley: (1) identifying the research question(s); (2) searching for relevant studies; (3) selecting studies; (4) charting the data; (5) collating, summarising and reporting the results; (6) conducting consultation exercises refined by Levac et al and the Joanna Briggs Institute. The search strategy for this scoping review will involve electronic databases including Ovid Medline, PsycINFO, Ovid EMBASE, PubMed and Google Scholar, in addition to grey literature from websites of relevant organisations. Data will be extracted and charted by two independent reviewers. A narrative summary of the findings will be presented.

ETHICS AND DISSEMINATION

This is a review of the literature and all data will be obtained from publicly available materials; therefore, ethics approval is not required. The findings from this study will be disseminated as publications in peer-reviewed journals, at relevant national and international conferences, and as presentations to the health authorities in several municipalities in the Trøndelag region of Norway.

Differences in initiation and discontinuation of preventive medications and use of non-pharmacological interventions after acute coronary syndrome among migrants and Danish-born

Aims

The aim of this article is to assess initiation and discontinuation of preventive medication and use of non-pharmacological prevention interventions after acute coronary syndrome (ACS) among migrants to Denmark compared to the local-born Danish population, taking differences in comorbidity and sociodemographic factors into account.

Methods and results

In this large cohort study, we selected the population (n = 33 199) from nationwide registers and followed each individual among migrants and Danish-born 180 days after ACS. We identified the initiation and discontinuation of medications and the initiation and number of contacts for non-pharmacological interventions in the Register of Medicinal Products Statistics and the National Patient Register, and adjusted for comorbidity and sociodemographic factors. Non-Western migrants had lower relative risks for initiating adenosine diphosphate receptor (ADP)- and angiotensin-converting enzyme (ACE)-inhibitors (0.93, CI: 0.90; 0.96, and 0.91, CI: 0.87; 0.96) and patient education (0.95, CI: 0.92; 0.98). Further, non-Western migrants had higher hazard ratios for discontinuing medications (statins: 1.64, CI: 1.45; 1.86, ADP-inhibitors: 1.72, CI: 1.50; 1.97, β-blockers: 1.52, CI: 1.40; 1.64, and ACE-inhibitors: 1.72, CI: 1.46; 2.02), and fewer contacts for physical exercise and patient education (P < 0.001 and P = 0.011).

Conclusion

We identified differences between non-Western migrants and Danish-born in initiation and discontinuation of preventive medications and use of non-pharmacological interventions after ACS. These differences could not be explained by differences in comorbidity or sociodemographic factors.

Short-term and long-term case-fatality rates for myocardial infarction and ischaemic stroke by socioeconomic position and sex: a population-based cohort study in Sweden, 1990-1994 and 2005-2009

OBJECTIVE

Case-fatality rates (CFRs) for myocardial infarction (MI) and ischaemic stroke (IS) have decreased over time due to better prevention, medication and hospital care. It is unclear whether these improvements have been equally distributed according to socioeconomic position (SEP) and sex. The aim of this study is to analyse differences in short-term and long-term CFR for MI and IS by SEP and sex between the periods 1990-1994 to 2005-2009 for the entire Swedish population.

DESIGN

Population-based cohort study based on Swedish national registers.

METHODS

We used logistic regression and flexible parametric models to estimate short-term CFR (death before reaching the hospital or on the disease event day) and long-term CFR (1 year case-fatality conditional on surviving short-term) across five distinct SEP groups, as well as CFR differences (CFRDs) between SEP groups for both MI and IS from 1990-1994 to 2005-2009. : Result S: Overall short-term CFR for both MI and IS decreased between study periods. For MI, differences in short-term and long-term CFR between the least and most favourable SEP group were generally stable, except in long-term CFR among women; intermediate SEP groups mostly managed to catch up with the most favourable SEP group. For IS, short-term CFRD generally decreased compared with the most favourable group; but long-term CFRD were mostly stable, except for an increase for older subjects.

CONCLUSION

Despite a general decline in CFR for MI and IS across all SEP groups and both sexes as well as some reductions in CFRD, we found persistent and even increasing CFRD among the least advantaged SEP groups, older patients and women. We speculate that targeted prevention rather than treatment strategies have the potential to reduce these inequalities.

Education of Migrant and Nonmigrant Patients Is Associated With Initiation and Discontinuation of Preventive Medications for Acute Coronary Syndrome

Background The benefits of preventive medications after acute coronary syndrome are impeded by low medication persistence, in particular among marginalized patient groups. Patient education might increase medication persistence, but the effect is still uncertain, especially among migrant groups. We, therefore, assessed whether use of patient education was associated with medication persistence after acute coronary syndrome and whether migrant background modified the potential associations. Methods and Results A cohort of patients discharged with a diagnosis of acute coronary syndrome (N=33 199) was identified in national registers. We then assessed number of contacts for patient education during a period of 6 months after discharge and the initiation and discontinuation of preventive medications during a period of up to 5 years. Results were adjusted for comorbidity and sociodemographic factors. Three or more contacts for patient education was associated with a higher likelihood of initiating preventive medications, corresponding to adjusted relative risks ranging from 1.12 (95% CI , 1.06-1.18) for statins to 1.39 (95% CI , 1.28-1.51) for ADP inhibitors. Lower risks of subsequent discontinuation were also observed, with adjusted hazard ratios ranging from 0.86 (95% CI , 0.79-0.92) for statins to 0.92 (95% CI , 0.88-0.97) for β blockers. Stratification and test for effect modification by migrant status showed insignificant effect modification, except for initiation of ADP inhibitors and statins. Conclusions Patient education is associated with higher chance of initiating preventive medications after acute coronary syndrome and a lower long-term risk of subsequent discontinuation independently of migrant status.

The long-term impact of early treatment of multiple sclerosis on the risk of disability pension

Objective

The objective of this retrospective, observational study was to estimate the long-term impact of early treatment of multiple sclerosis (MS) on the risk of disability pension.

Methods

Our cohort comprised patients with MS in Sweden, identified in a nationwide disease-specific register (the Swedish Multiple Sclerosis Registry), who started treatment with a disease-modifying drug (DMD) between January 1, 2002, and December 31, 2012. We analyzed the association between time from onset of MS to treatment initiation and full-time disability pension using survival analysis.

Results

Our sample comprised 2477 patients. Unadjusted Kaplan–Meier failure functions showed that patients who started treatment within six months after onset had a lower risk of disability pension across follow-up compared with patients initiating therapy after 12 months. Outcomes from the univariate Cox proportional hazards model showed that time from onset to treatment initiation (in years) was significantly associated with disability pension (HR 1.03, p < 0.001). Outcomes from the multivariable Cox proportional hazards model showed that patients who started treatment within 6 months after onset had, on average, a 36% lower risk (HR 0.74, p = 0.010) of full-time disability pension during follow-up compared with patients starting treatment after 18 months when controlling for age, sex, marital status, university education, and prevalent comorbidities.

Conclusions

We show that early treatment with DMDs of MS is associated with a significantly reduced risk of disability pension. Our findings highlight the potential long-term benefits of early treatment of MS and should be helpful to inform ongoing discussion on the optimum medical management of the disease.

Electronic supplementary material

The online version of this article (10.1007/s00415-018-8764-4) contains supplementary material, which is available to authorized users.

Appropriate assessment of ethnic differences in adolescent use of psychotropic medication: multilevel analysis of discriminatory accuracy

OBJECTIVE

In the present study, we used a multilevel approach to investigate the role of maternal country of birth (MCOB) in predicting adolescent use of psychotropic medication in Sweden.

DESIGN

Using the Swedish Medical Birth Register we identified all 428,314 adolescents born between 1987 and 1990 and who were residing in Sweden in the year they turned 18. We applied multilevel logistic regression analysis with adolescents (level 1) nested within MCOBs (level 2). Measures of association (odds ratio) and measures of variance (intra-class correlation (ICC)) were calculated, as well as the discriminatory accuracy by calculating the area under the Receiver Operator Characteristic (AU-ROC) curve.

RESULTS

In comparison with adolescents with Swedish-born mothers, adolescents with mothers born in upper-middle, lower-middle and low-income countries were less likely to use psychotropic medication. However, the variance between MCOBs was small (ICC = 2.5 in the final model) relative to the variation within MCOBs. This was confirmed by an AU-ROC value of 0.598.

CONCLUSIONS

Even though we found associations between MCOB and adolescent use of psychotropic medication, the small ICC and AU-ROC indicate that MCOB appears to be an inaccurate context for discriminating adolescent use of psychotropic medication in Sweden.

Pharmacological treatments of cardiovascular diseases: Evidence from real-life studies

The management of chronic cardiovascular diseases has evolved greatly in the last decades. Over the last thirty years, the management of acute coronary syndrome has improved, leading to an important lowering of the mortality in the acute phase of the event. Consequently, the optimal management of the secondary prevention of acute coronary syndrome has greatly evolved. Moreover, the increased number of pharmacological alternatives for patients affected by chronic heart failure and by non-valvular atrial fibrillation reserves a number of challenges for their correct management. Moreover, these diseases are without any reasonable doubt the largest contributor to global mortality in the present and will continue to be it in the future. The aim of this study was to provide the most updated information of the real-life drug use and their effectiveness. This review was performed to assess the potential knowledge gaps in the treatments of these diseases and to indicate potential perspective of pharmaco-epidemiological research in this area.

Socioeconomic inequalities in access to treatment for coronary heart disease: A systematic review

Strong socioeconomic inequalities exist in cardiovascular mortality and morbidity. The current review aims to synthesize the current evidence on the association between socioeconomic status (SES) and access to treatment of coronary heart disease (CHD). We examined quantitative studies analyzing the relationship between SES and access to CHD treatment that were published between 1996 and 2015. Our data sources included Medline and Web of Science. Our search yielded a total of 2066 records, 57 of which met our inclusion criteria. Low SES was found to be associated with low access to coronary procedures and secondary prevention. Access to coronary procedures, especially coronary angiography, was mainly related to SES to the disadvantage of patients with low SES. However, access to drug treatment and cardiac rehabilitation was only associated with SES in about half of the studies. The association between SES and access to treatment for CHD was stronger when SES was measured based on individual-level compared to area level, and stronger for individuals living in countries without universal health coverage. Socioeconomic inequalities exist in access to CHD treatment, and universal health coverage shows only a minor effect on this relationship. Inequalities diminish along the treatment pathway for CHD from diagnostic procedures to secondary prevention. We therefore conclude that CHD might be underdiagnosed in patients with low SES. Our results indicate that there is an urgent need to improve access to CHD treatment, especially by increasing the supply of diagnostic angiographies, to reduce inequalities across different healthcare systems.

Diabetes in migrants and ethnic minorities in a changing World

On a worldwide scale, the total number of migrants exceeds 200 million and is not expected to reduce, fuelled by the economic crisis, terrorism and wars, generating increasing clinical and administrative problems to National Health Systems. Chronic non-communicable diseases (NCD), and specifically diabetes, are on the front-line, due to the high number of cases at risk, duration and cost of diseases, and availability of effective measures of prevention and treatment. We reviewed the documents of International Agencies on migration and performed a PubMed search of existing literature, focusing on the differences in the prevalence of diabetes between migrants and native people, the prevalence of NCD in migrants vs rates in the countries of origin, diabetes convergence, risk of diabetes progression and standard of care in migrants. Even in universalistic healthcare systems, differences in socioeconomic status and barriers generated by the present culture of biomedicine make high-risk ethnic minorities under-treated and not protected against inequalities. Underutilization of drugs and primary care services in specific ethnic groups are far from being money-saving, and might produce higher hospitalization rates due to disease progression and complications. Efforts should be made to favor screening and treatment programs, to adapt education programs to specific cultures, and to develop community partnerships.

Sex Disparities in Post-Acute Myocardial Infarction Pharmacologic Treatment Initiation and Adherence: Problem for Young Women

BACKGROUND

The prevalence of the use of secondary prevention cardiovascular medications is lower among women than men, but it is unclear if this is a result of lower treatment initiation among women or lower treatment adherence. We aimed to map the treatment pathway for survivors of acute myocardial infarction (AMI) by sex and age.

METHODS AND RESULTS

This retrospective population-based cohort study used linked administrative data sets in British Columbia (2004-2011), which include health care, prescription drugs, sociodemographic, and mortality information. The study cohort included all individuals admitted to hospital for AMI in 2007-2009 and survived for 1 year after hospital discharge. Patients were evaluated for whether they initiated and then subsequently filled prescriptions angiotensin-converting enzyme inhibitors, β-blockers, and statins. More than two thirds of AMI survivors initiated treatment on all appropriate medications, given their contraindications, within 2 months of discharge. Younger men were significantly more likely than younger women to initiate appropriate treatment (adjusted odds ratio, 1.38; 95% confidence interval, 1.10-1.75). By the end of 1 year after discharge, only one third of all AMI survivors filled all appropriate prescriptions for at least 80% of the year. There was no significant difference in adherence to medication therapy between women and men.

CONCLUSIONS

The majority of AMI survivors either discontinue treatment or do not refill their prescriptions consistently. Women <55 years are significantly less likely to be on optimal therapy by the end of 1 year after discharge, which is driven by a sex disparity in treatment initiation and not treatment adherence.

Educational level and risk profile and risk control in patients with coronary heart disease

BACKGROUND

The purpose of this study was to ascertain way in which conventional risk factors, readiness to modify behaviour and to comply with recommended medication, and the effect of this medication were associated with education in patients with established coronary heart disease (CHD).

METHODS

The EUROASPIRE IV (EUROpean Action on Secondary Prevention by Intervention to Reduce Events) study was a cross-sectional survey undertaken in 24 European countries to ascertain how recommendations on secondary CHD prevention are being followed in clinical practice. Consecutive patients, men and women ≤80 years of age who had been hospitalized for an acute coronary syndrome or revascularization procedure, were identified retrospectively. Data were collected through an interview with examinations at least six months and no later than three years after hospitalization.

RESULTS

A total of 7937 patients (1934 (24.37%) women) were evaluated. Patients with primary education were older, with a larger proportion of women. Control of risk factors, as defined by Joint European Societies 4 and 5 guidelines, was significantly better with higher education for current smoking (p = 0.001), overweight and obesity (p = 0.047 and p = 0.029, respectively), low physical activity (p < 0.001) and low high-density lipoprotein (HDL)-cholesterol (p = 0.011) in men, and for obesity (p = 0.005), high blood pressure (p < 0.005 and p < 0.001), low physical activity (p = 0.001), diabetes (p < 0.001) and low HDL-cholesterol (p = 0.023) in women. Patients with primary and secondary education were more often treated with diuretics and antidiabetic drugs. Better control of hypertension was achieved in patients with higher education.

CONCLUSION

Particular risk communication and control are needed in secondary CHD prevention for patients with lower educational status.

Inequity of access to ACE inhibitors in Swedish heart failure patients: a register-based study

Background

Several international studies suggest inequity in access to evidence-based heart failure (HF) care. Specifically, studies of ACE inhibitors (ACEIs) point to reduced ACEI access related to female sex, old age and socioeconomic position. Thus far, most studies have either been rather small, lacking diagnostic data, or lacking the possibility to account for several individual-based sociodemographic factors. Our aim was to investigate differences, which could reflect inequity in access to ACEIs based on sex, age, socioeconomic status or immigration status in Swedish patients with HF.

Methods

Individually linked register data for all Swedish adults hospitalised for HF in 2005–2010 (n=93 258) were analysed by multivariate regression models to assess the independent risk of female sex, high age, low employment status, low income level, low educational level or foreign country of birth, associated with lack of an ACEI dispensation within 1 year of hospitalisation. Adjustment for possible confounding was made for age, comorbidity, Angiotensin receptor blocker therapy, period and follow-up time.

Results

Analysis revealed an adjusted OR for no ACEI dispensation for women of 1.31 (95% CI 1.27 to 1.35); for the oldest patients of 2.71 (95% CI 2.53 to 2.91); and for unemployed patients of 1.59 (95% CI 1.46 to 1.73).

Conclusions

Access to ACEI treatment was reduced in women, older patients and unemployed patients. We conclude that access to ACEIs is inequitable among Swedish patients with HF. Future studies should include clinical data, as well as mortality outcomes in different groups.

Socioeconomic Inequalities in the Prescription of Oral Anticoagulants in Stroke Patients With Atrial Fibrillation

BACKGROUND AND PURPOSE

Oral anticoagulants (OACs) are effective against ischemic stroke in patients with atrial fibrillation. Our aim was to investigate differences in the prescribing of OACs after ischemic stroke in patients with atrial fibrillation based on age, sex, country of birth, and socioeconomic status.

METHODS

Patients with first-ever ischemic stroke and atrial fibrillation without OAC treatment were included from the Swedish stroke register from 2009 to 2012. The outcome was OAC prescribed at discharge. Income, education, country of birth, and risk factors were obtained from official registers. Risk factors and health status were controlled for in multivariable logistic regression.

RESULTS

Of 12 088 stroke patients, 36.3% were prescribed an OAC. Prescribing was less common with older age and, in patients born in other Nordic countries (odds ratio [OR], 0.82; 95% confidence interval [CI], 0.68-0.98) or countries outside of Europe (OR, 0.65; 95% CI, 0.42-0.99) compared with those born in Sweden. University education (OR, 1.20; 95% CI, 1.05-1.36) and highest income (OR, 1.19; 95% CI, 1.06-1.33) were associated with higher levels of OAC prescribing compared with those with primary school education or lowest income level.

CONCLUSION

Differences by age, income, education, and country of birth were found in the prescribing of OACs after stroke. Differences were not explained by common risk factors. This indicates socioeconomic inequalities in the prescribing of preventive treatment after stroke.

Recommended drug use after acute myocardial infarction by migration status and education level

PURPOSE

The purpose of this study is to investigate the association between migration status and education level and the use of recommended drugs after first acute myocardial infarction (MI).

METHODS

A nationwide cohort study performed in Sweden from January 1, 2006 to August 1, 2008. The cohort consisted of 49,037 incident cases of first acute MI. In total, 37,570 individuals survived 180 days after MI, of whom 4782 (12.7%) were foreign-born. We used logistic regression to estimate the odds ratio (OR) with 95% confidence interval (CI) of the association between migration status and education level and prescribed drugs after MI.

RESULTS

One third of the patients who were not on any recommended cardiovascular drugs before MI continued to be without recommended cardiovascular drugs after MI. Among those with no cardiovascular drugs before MI, we found no difference in recommended drug use after MI by migration status (OR 1.00, 95% CI 0.89-1.12). Among those with some but not all recommended cardiovascular drugs before MI, foreign-born cases had a slightly non-significant lower use of recommended drugs (OR 0.92, 95% CI 0.83-1.03). Foreign-born patients with low education had a slightly lower use of recommended drug compared to Sweden-born. Women with low education had a lower use of drugs after MI (Sweden born, OR 0.85; 95% CI 0.74-0.96 and foreign born OR 0.51; 95% CI 0.34-0.77).

CONCLUSION

There is no apparent difference between foreign-born and Sweden-born in recommended drug use after MI. However, our study reveals an inequity in secondary prevention therapy after myocardial infarction by education level.

Under-treatment of migrants with diabetes in a universalistic health care system: the ARNO Observatory

AIMS

To assess whereas prevalence, treatment and direct costs of drug-treated diabetes were similar in migrants and in people of Italian citizenship under the universalistic Italian health care system.

METHODS AND RESULTS

Drug-treated diabetic individuals were identified in the population-based multiregional ARNO Observatory on the basis of 2010 prescriptions. Migrants were identified by the country-of-birth code on the fiscal identification code. Diabetes prevalence was calculated for Italians (n = 7,328,383) and migrants (n = 527,965). To assess the odds of migrants of having diabetes compared to Italians, we individually matched all migrants to Italians for major confounders (age, sex and place of residence). Finally, all migrants with diabetes were individually matched for confounders to Italians with diabetes to compare prescriptions, hospitalization rates, services use and direct costs for the National Health System. We identified 368,797 subjects with diabetes among Italians and 10,336 among migrants, giving prevalence of 5.03% and 1.96%, respectively. Migrants with diabetes were younger than Italians (52 ± 13 years vs. 68 ± 14 years, P < 0.001); after matching, their risk of disease was higher (odds ratio, 1.55, 95% confidence interval, 1.50-1.60). The total cost was 27% lower in migrants, due to lower cost of drugs (-29%), hospital admission (-27%) and health services (-22%). The number of packages/treated person-year of all glucose-lowering drugs was also lower in migrants (-15%) (P < 0.001).

CONCLUSIONS

Compared to subjects of Italian ancestry, migrants to Italy show a higher risk of diabetes but less intense treatment. Inequalities in health care use are likely and are maintained also in a universalistic system.

Do immigrants from Turkey, Pakistan and Ex-Yugoslavia with newly diagnosed type 2 diabetes initiate recommended statin therapy to the same extent as Danish-born residents? A nationwide register study

PURPOSE

To explore whether newly diagnosed type 2 diabetes patients without previous cardiovascular disease (CVD) initiate preventive statin therapy regardless of ethnic background.

METHODS

Using nationwide individual-level registers, we followed a cohort of Danish-born residents and immigrants from Turkey, Pakistan and Ex-Yugoslavia, all without previous diabetes or CVD, during the period 2000-2008 for first dispensing of oral glucose-lowering medication (GLM), first dispensing of statins and register-markers of CVD (N = 3,764,620). Logistic regression analyses were used to test whether the odds ratios (ORs) of early statin therapy initiation (within 180 days after first GLM dispensing) are the same regardless of ethnic background. While age and gender were included as confounders in the basic model, income was included in the second model as a potential mediating variable.

RESULTS

Compared to native Danes, the ORs for early statin therapy were 0.68 (95 % confidence interval 0.50-0.92], 0.67 (0.56-0.81) and 0.56 (0.44-0.71) for Ex-Yugoslavians, Turks and Pakistanis, respectively. The differences remained largely unchanged after adjusting for income and tended to be accentuated when the threshold period was extended. The ORs of women initiating therapy (compared to native Danes) were 0.56 (0.35-0.90), 0.60 (0.46-0.78) and 0.48 (0.32-0.72) for Ex-Yugoslavians, Turks and Pakistanis, respectively, and those for men were 0.78 (0.52-1.17), 0.74 (0.58-0.95) and 0.60 (0.44-0.83), respectively.

CONCLUSIONS

Immigrants from Turkey, Pakistan and Ex-Yugoslavia with type 2 diabetes were less likely to initiate statin therapy than Danish-born residents-despite a similar or even higher risk of CVD. The treatment inequities associated with ethnicity were more pronounced in women than men.

Ethnic differences in the use of prescription drugs: a cross-sectional analysis of linked survey and administrative data

BACKGROUND

Evidence from the United States and Europe suggests that the use of prescription drugs may vary by ethnicity. In Canada, ethnic disparities in prescription drug use have not been as well documented as disparities in the use of medical and hospital care. We conducted a cross-sectional analysis of survey and administrative data to examine needs-adjusted rates of prescription drug use by people of different ethnic groups.

METHODS

For 19 370 non-Aboriginal people living in urban areas of British Columbia, we linked data on self-identified ethnicity from the Canadian Community Health Survey with administrative data describing all filled prescriptions and use of medical services in 2005. We used sex-stratified multivariable logistic regression analysis to measure differences in the likelihood of filling prescriptions by drug class (antihypertensives, oral antibiotics, antidepressants, statins, respiratory drugs and nonsteroidal anti-inflammatory drugs [NSAIDs]). Models were adjusted for age, general health status, treatment-specific health status, socio-economic factors and recent immigration (within 10 years).

RESULTS

We found evidence of significant needs-adjusted variation in prescription drug use by ethnicity. Compared with women and men who identified themselves as white, those who were South Asian or of mixed ethnicity were almost as likely to fill prescriptions for most types of medicines studied; moreover, South Asian men were more likely than white men to fill prescriptions for antibiotics and NSAIDs. The clearest pattern of use emerged among Chinese participants: Chinese women were significantly less likely to fill prescriptions for antihypertensives, antibiotics, antidepressants and respiratory drugs, and Chinese men for antidepressant drugs and statins.

INTERPRETATION

We found some disparities in prescription drug use in the study population according to ethnic group. The nature of some of these variations suggest that ethnic differences in beliefs about pharmaceuticals may generate differences in prescription drug use; other variations suggest that there may be clinically important disparities in treatment use.

Do immigrants from Turkey, Pakistan and Yugoslavia receive adequate medical treatment with beta-blockers and statins after acute myocardial infarction compared with Danish-born residents? A register-based follow-up study

PURPOSE

We undertook a study investigating whether immigrants from Turkey, Pakistan and Yugoslavia received adequate medical treatment with beta-blockers and statins after acute myocardial infarction (AMI) when compared with Danish-born residents and explored whether associations between patient origin and medical treatment were mediated by socioeconomic status (SES).

METHODS

This register-based follow-up study consisted of individuals >17 years of age, admitted to hospital with AMI between 2001 and 2005 (n=25,443). Danish-born residents were compared with immigrants from Turkey, Pakistan and Yugoslavia. Individuals were identified by civil registration number, and data were obtained through linkage to the national registers of hospitalisations and drug prescriptions. Odds of initiating treatment and hazard ratios (HR) of terminating treatment were estimated. Mediators such as income and employment were included in the models.

RESULTS

Pakistanis were less likely than Danish-born residents to initiate treatment with beta-blockers after AMI [odds ratio 0.52; 95% confidence interval (CI) 0.34-0.80]. Immigrants from Turkey (HR 1.36; 95% CI 1.07-1.73) and Pakistan (HR 1.59; 95% CI 1.21-2.08) were more likely to terminate treatment with beta-blockers before being recommended to do so. Estimates did not change markedly when income and education were included in the models.

CONCLUSIONS

The results of this study suggest that immigrants from Pakistan and Turkey do not receive adequate medical treatment with beta-blockers after a first AMI compared with Danish-born residents. Mediators such as income and employment may not be sufficient indicators of SES when the effect of patient origin on medical treatment is explored. A lower SES of immigrants, communication problems between doctor and patient and doctors' attitudes towards immigrants may explain ethnic differences in medical treatment after AMI.

Socioeconomic position and secondary preventive therapy after an AMI

PURPOSE

To investigate the association between socioeconomic position and use of lipid-lowering drugs and ACE-inhibitors after an acute myocardial infarction (AMI) when simultaneously considering participation in the national quality register RIKS-HIA (Register of Information and Knowledge about Swedish Heart Intensive care Admissions), age, sex and previous hospitalizations of the patients.

METHODS

Population-based prospective cohort study included all 1346 AMI patients cared in the county of Scania, Sweden during 2006 of whom 1061 were register at the RIKS-HIA. Treatment with lipid-lowering and ACE-inhibiting therapy in relation to income was investigated with Cox and logistic regression modelling.

RESULTS

In the whole population of AMI patients, high income patients had a higher adherence to guidelines for pharmacological secondary prevention than low income patients (HR(lipid-lowering drug): 1.29; 95%CI: 1.12-1.49 and HR(ACE-inhibitor therapy): 1.22; 95%CI: 1.04-1.43). Among RIKS-HIA participants, patients with high income presented a better adherence to lipid-lowering treatment than patients with low income (HR: 1.15; 95%CI: 0.98-1.34).

CONCLUSION

Our investigation reveals that the Swedish goal of access to health care on equal terms and according to needs is still not fully accomplished. Moreover, since this pattern of inequity in pharmacological secondary prevention may lead to the recurrence of heart disease, these inequities are not only a matter of fairness and social justice, but also a potential (and modifiable) source of ineffectiveness and inefficiency in health care.

Changing patterns of secondary preventive medication among newly diagnosed coronary heart disease patients with diabetes in Finland: a register-based study

AIMS

Information on medicine use among coronary heart disease (CHD) patients with diabetes in unselected patient populations is scarce. This study examines the use of medication to prevent new cardiac events among newly diagnosed CHD patients with diabetes comparing them to patients without diabetes and examines socioeconomic differences in medicine use in these patient groups.

METHODS

Data on CHD patients (43,501 men and 31,125 women) with or without diabetes were individually linked from nationwide registers (covering both patients treated in ambulatory and in hospital inpatient care). Age-standardised rates for medication use were calculated and differences between patient groups examined using Poisson regression.

RESULTS

beta-blocker use was high in all patient groups in 1997-2002, angiotensin-converting enzyme (ACE) inhibitor and angiotensin II antagonist use increased and remained higher among patients with diabetes. More than half of men and women with diabetes used ACE inhibitors and one out of five used angiotensin II antagonists in 2002. Lipid-lowering medication use increased, especially among women. In 1997-98 it was lower in lower socioeconomic groups; among men with diabetes the use remained lower than among others.

CONCLUSIONS

beta-blocker use was constant and ACE inhibitor and angiotensin II antagonist use increased. Lipid-lowering medication use increased considerably after a health insurance reform in 2000, in which elevated reimbursement of drug costs (75%) was extended to include all CHD patients with hyperlipidaemia.Socioeconomic differences in medication use disappeared after the reform. However, lipid-lowering medication use remained at a lower level among men with diabetes, suggesting that their treatment did not follow guidelines.