Disease-Modifying Therapy Adherence and Associated Factors in a National Sample of Medicare Patients With Multiple Sclerosis

Ethnicity and deprivation negatively impact the access to disease-modifying therapy for relapsing-remitting multiple sclerosis: a retrospective, single-centre study

BACKGROUND

A growing body of evidence suggests inequitable access to disease-modifying therapies (DMTs) for multiple sclerosis (MS) in publicly funded healthcare systems. This retrospective study examined the impact of ethnicity and deprivation on the access to DMTs.

METHODS

All adults diagnosed with relapsing-remitting MS between 2010 and 2020 were included. The impact of ethnicity and deprivation on being offered and starting any DMTs and high-efficacy DMTs were measured using binary, multinomial logistic and Cox regression models. These analyses were adjusted for sex, age at diagnosis and year of diagnosis.

RESULTS

164/1648 people with MS (PwMS) were from non-white ethnicities. 461/1648 who were living in the most deprived areas, were less likely to be offered DMTs, with an OR of 0.66 (95% CI 0.47 to 0.93), less likely to start high-efficacy DMTs with an OR of 0.67 (95% CI 0.48 to 0.93) and more likely to experience a delay in starting high-efficacy DMTs with an HR of 0.76 (95% CI 0.63 to 0.92), when also adjusted for ethnicity. Although the offer of DMTs did not depend on ethnicity, PwMS from non-white ethnicities were more likely to decline DMTs, less likely to start any DMTs and high-efficacy DMTs with ORs of 0.60 (95% CI 0.39 to 0.93) and 0.61 (95% CI 0.38 to 0.98), respectively, and more likely to experience a delay in starting DMTs with an HR of 0.79 (95% CI 0.66 to 0.95), when also adjusted for deprivation.

CONCLUSIONS

In a publicly funded healthcare system, the access to DMTs varied depending on ethnicities and levels of deprivation.

The impact of medical insurance on health care access and quality for people with multiple sclerosis in the United States: A scoping review

BACKGROUND

In the United States, health insurance coverage and quality mediate access to health care, a key social determinant of health.

OBJECTIVE

To perform a scoping review regarding the impact of insurance coverage and benefit design on health care access and both clinical and quality of life outcomes in people with MS (pwMS).

METHODS

Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines were followed. A literature search was conducted from January 2010 to February 2022. Included studies were in English, peer-reviewed, US-based, and evaluated elements of insurance and their relationship with access and quality outcomes for adult pwMS.

RESULTS

Our search identified 1619 articles, of which 32 met inclusion criteria. Privately insured pwMS were more likely to be on disease-modifying therapy (DMT). Increased out-of-pocket spending was associated with lower DMT adherence and greater discontinuation rates. Access to specialty pharmacy programs was associated with improved DMT adherence.

CONCLUSION

Health insurance coverage and design strongly influences health care for pwMS in the United States and may be a modifiable social determinant of health. Increased pharmaceutical cost-sharing is associated with declines in DMT utilization and adherence. Further study is needed to better characterize the impacts of other core elements of health insurance, including prior authorization requirements and step therapy.

University education facilitates uptake of disease-modifying therapies for multiple sclerosis: A community-based study using the UK MS Register

BACKGROUND

Higher education is associated with better job opportunities and higher income.

OBJECTIVES

Herein, the impact of education on the uptake of disease-modifying therapies (DMTs) for multiple sclerosis (MS) in a publicly funded health care system was examined using the UK MS Register.

METHODS

All adult participants with relapsing remitting MS diagnosed between 2008 and 2021 were included. Those without data regarding their education levels were excluded. Binary, multinomial and Cox regression models were used to examine the association between education levels and uptake of DMTs.

RESULTS

A total of 6317 participants fulfilled all inclusion and exclusion criteria. A total of 1826/2923 (62%) participants with a university education were treated with DMTs, compared to 1788/3394 (53%) participants with school/diploma received DMTs with an odds ratio of 1.318 (1.178-1.473). Participants with a university education were more likely to be treated with both moderate- and high-efficacy DMTs, compared to others, with odds ratios of 1.227 (1.087-1.385) and 1.545 (1.325-1.802), respectively. University education was also a positive predictor for faster initiation of DMTs, and, importantly, higher-efficacy DMTs.

CONCLUSION

In a publicly funded health care system, despite intended equality of access, university education was associated with a higher uptake of DMTs.

Ethnic disparities in the epidemiological and clinical characteristics of multiple sclerosis

BACKGROUND

Multiple Sclerosis (MS) is a neuroinflammatory disorder which affects 2.8 million people world-wide. A growing body of evidence shows ethnic disparities in MS. This review aims to evaluate differences, based upon ethnic background, in the incidence, prevalence, disease course, and efficacy of disease-modifying therapies (DMTs) among people with MS (PwMS).

METHOD

Ethnicities were classified as White, Black, Hispanic, Asian, and Middle Eastern and North African (MENA). A literature search was conducted using the PubMed search engine to identify articles on MS and ethnicity that were published in the English language between 01/01/2005 and 31/05/2022.

RESULTS

101 studies met all inclusion criteria. Although the incidence and prevalence of MS varied among ethnicities, findings were inconsistent and depended on the continent of the study. Ethnicity may have an impact on the disease course. PwMS from Black, Hispanic, and MENA, but not Asian ethnicities, appeared to accumulate physical disability at a faster rate than those from White ethnicity. Although there was a lack of studies evaluating the relative safety and efficacy of DMTs among various ethnicities, interferon-beta was found to be less efficacious in PwMS from Black ethnicity.

CONCLUSIONS

Further studies, with more uniform definitions of ethnicity are required to comprehensively understand ethnic disparities in MS, in particular to identify underlying causes, to facilitate the delivery of personalised medical care and avoid inequity.

Individual Differences in the Patient Experience of Relapsing Multiple Sclerosis (RMS): A Multi-Country Qualitative Exploration of Drivers of Treatment Preferences Among People Living with RMS

AIMS

The aim of this study was to explore the experiences, values and preferences of people living with relapsing multiple sclerosis (PLwRMS) focusing on their treatments and what drives their treatment preferences.

METHODS

In-depth, semi-structured, qualitative telephone interviews were conducted using a purposive sampling approach with 72 PLwRMS and 12 health care professionals (HCPs, MS specialist neurologists and nurses) from the United Kingdom, United States, Australia and Canada. Concept elicitation questioning was used to elicit PLwRMS' attitudes, beliefs and preferences towards features of disease-modifying treatments. Interviews with HCPs were conducted to inform on HCPs' experiences of treating PLwRMS. Responses were audio recorded and transcribed verbatim and then subjected to thematic analysis.

RESULTS

Participants discussed numerous concepts that were important to them when making treatment decisions. Levels of importance participants placed on each concept, as well as reasons underpinning importance, varied substantially. The concepts with the greatest variability in terms of how much PLwRMS found them to be important in their decision-making process were mode of administration, speed of treatment effect, impact on reproduction and parenthood, impact on work and social life, patient engagement in decision making, and cost of treatment to the participant. Findings also demonstrated high variability in what participants described as their ideal treatment and the most important features a treatment should have. HCP findings provided clinical context for the treatment decision-making process and supported patient findings.

CONCLUSIONS

Building upon previous stated preference research, this study highlighted the importance of qualitative research in understanding what drives patient preferences. Characterized by the heterogeneity of the RMS patient experience, findings indicate the nature of treatment decisions in RMS to be highly individualized, and the subjective relative importance placed on different treatment factors by PLwRMS to vary. Such qualitative patient preference evidence could offer valuable and supplementary insights, alongside quantitative data, to inform decision making related to RMS treatment.

Factors Associated with Therapeutic Adherence in Multiple Sclerosis in Spain

Purpose

Adherence to disease-modifying therapies (DMTs) in multiple sclerosis (MS) is a complex and multidimensional phenomenon. Identifying the predictors of therapeutic adherence in MS will guide the design of interventions to improve health outcomes. Our aim was to assess the degree of adherence to pharmacological treatments, assess the relationship between patient-related factors and pharmacological adherence and to identify predictors of adherence to pharmacological treatments in patients with MS in Spain.

Patients and Methods

A cross-sectional nationwide study was carried out in Spain between December 2020 and September 2021. The web-based evaluation protocol consisted of a self-questionnaire survey designed ad hoc and the application of validated questionnaires to assess adherence, as well as beliefs about medication and quality of life. Predictor variables of adherence to MS treatment were assessed using multivariate analysis.

Results

A total of 152 patients with MS participated (mean age: 44 years; 64% were female; and 78% had relapsing-remitting MS). Seventy-three percent of the patients reported being adherent to their pharmacological treatment for MS. Forgetfulness was the most common cause of non-adherence. Necessity beliefs and concerns beliefs were not statistically associated with adherence. The adherent group shows statistically significant better levels of quality of life in the cognitive function subscale than the non-adherent participants (p=0.040). Role limitations-emotional, emotional well-being and overall quality of life were not significantly associated with adherence. Predictors with a statistical association with adherence to treatment were years of education (OR=0.79; 95% CI: 0.65-0.96; p=0.020) and intravenous treatment (OR=3.17; 95% CI: 1.07-9.45; p=0.038).

Conclusion

We found an adequate adherence to pharmacological treatment. Low education and intravenous treatment were significant predictors of adherence to DMTs.

Patterns of Comorbidity and Multimorbidity Among Patients With Multiple Sclerosis in a Large US Commercially Insured and Medicare Advantage Population

Background: Comorbidities are common in patients with multiple sclerosis (MS), thus increasing the complexity of disease management and economic burden and worsening their prognosis and quality of life. Real-world evidence comparing comorbidities and multimorbidity patterns of commercially insured vs Medicare enrollees with MS is lacking. Objective: To evaluate the patterns of comorbidity and multimorbidity among patients with MS in a US commercially insured and Medicare Advantage population. Methods: This retrospective observational cohort study was conducted using Aetna health claims data from January 1, 2015, to October 31, 2019. Eligibility criteria were (1) at least 3 MS-related inpatient/outpatient (ICD-10-CM: G35), or disease-modifying therapy claims within 1 year (date of first claim = index date); (2) Aetna commercial health plan or Medicare Advantage medical and pharmacy benefits at least 12 months pre-/post-index; and (3) age 18 and older. Commercially insured patients, Medicare Advantage patients younger than 65 years of age, and Medicare Advantage patients 65 years and older were compared. Results: Among 5000 patients (mean [SD] age, 52.6 [12.9]; 75.2% female), 53% had commercial insurance and 47% had Medicare Advantage (59.2% disabled age <65). Medicare Advantage patients were older (age <65: 53.3 [7.9]; age ≥65: 70.8 [5.2]) vs commercial (age, 45.7 [10.2]), had greater comorbidity burden (Charlson Comorbidity Index; age <65: 1.17 [1.64], age ≥65: 1.65 [1.95]) vs commercial (0.53 [1.02]) (all P < .0001). Symptoms specific to MS (ie, malaise, fatigue, depression, spasms, fibromyalgia, convulsions) were more common among patients younger than 65 (all P < .0001). Age-related and other comorbidities (ie, hypertension, hyperlipidemia, dyspepsia, osteoarthritis, osteoporosis, glaucoma, diabetes, cerebrovascular, cancer) were more common among patients 65 years and older Medicare Advantage (all P < .0001). Multiple comorbidities were highly prevalent (median, 4 comorbidities), particularly among Medicare Advantage patients younger than 65 (median, 6) and Medicare Advantage patients 65 and older (median, 7). Conclusions: Comorbidities and multimorbidity patterns differed between patients with MS with commercial insurance and patients with Medicare Advantage. Multimorbidity was highly prevalent among patients with MS and should be considered in the context of clinical decision making to ensure comprehensive MS management and improve outcomes.

social determinants of health in multiple sclerosis

Social determinants of health are the conditions in which people are born, grow, live, work and age. These circumstances are the non-medical factors that influence health outcomes. Evidence indicates that health behaviours, comorbidities and disease-modifying therapies all contribute to multiple sclerosis (MS) outcomes; however, our knowledge of the effects of social determinants — that is, the ‘risks of risks’ — on health has not yet changed our approach to MS. Assessing and addressing social determinants of health could fundamentally improve health and health care in MS; this approach has already been successful in improving outcomes in other chronic diseases. In this narrative Review, we identify and discuss the body of evidence supporting an effect of many social determinants of health, including racial background, employment and social support, on MS outcomes. It must be noted that many of the published studies were subject to bias, and screening tools and/or practical interventions that address these social determinants are, for the most part, lacking. The existing work does not fully explore the potential bidirectional and complex relationships between social determinants of health and MS, and the interpretation of findings is complicated by the interactions and intersections among many of the identified determinants. On the basis of the reviewed literature, we consider that, if effective interventions targeting social determinants of health were available, they could have substantial effects on MS outcomes. Therefore, funding for and focused design of studies to evaluate and address social determinants of health are urgently needed.

Here, the authors discuss the potential effects of social determinants of health on multiple sclerosis risk and outcomes. They suggest that addressing these determinants of health could substantially improve the lives of individuals with multiple sclerosis and call for more research.

Addressing an individual’s social determinants of health — that is, the conditions under which they are born, grow, live, work and age — could provide opportunities to reduce the burden of living with multiple sclerosis (MS).

Individual factors that may influence MS-related outcomes include sex, gender and sexuality, race and ethnicity, education and employment, socioeconomic status, and domestic abuse.

Societal infrastructures, including access to food, health care and social support, can also affect MS-related outcomes.

Awareness of the specific circumstances of a patient with MS might help neurologists deliver better care.

Social determinants of health are not static and can change according to wider sociopolitical contexts, as highlighted by the COVID-19 pandemic.

Rigorous studies of interventions to ameliorate the effects of poor social determinants on people with MS are urgently needed.

Factors affecting adherence to disease-modifying therapies in multiple sclerosis: systematic review

People with multiple sclerosis (MS) face challenges adhering to disease-modifying drug (DMD) treatment. Poor adherence to treatment reduces its clinical effectiveness which can adversely impact disease progression, MS-related hospitalisation, and mortality rates. Understanding the barriers to adherence is essential to addressing these issues in clinical practice and a consolidation of the literature had not yet been carried out. A systematic search was carried out using the electronic databases PsycINFO, and PubMed (Medline) using the search terms treatment compliance or treatment adherence and multiple sclerosis or MS. Studies included adults, with a diagnosis of relapsing-remitting MS (RRMS) (sample > 80% RRMS), taking a DMD. The studies used an adequate measurement of treatment adherence and analysed possible factors associated with adherence. A total of 349 studies were retrieved, of which 24 were considered eligible for inclusion. Overall adherence rates of the included studies ranged from 52 to 92.8%. Narrative synthesis revealed the most prevalent factors associated with adherence were age, gender, depression, cognition, treatment satisfaction, injection-site reactions, and injection anxiety. There was contradictory evidence for disability in association with treatment adherence. The findings should be used to inform the development of targeted patient support programs which improve treatment compliance. The review also highlights the opportunities for advancing research into treatment adherence in MS.

Adherence to Therapy in Patients with Multiple Sclerosis-Review

Multiple sclerosis (MS) is a chronic, autoimmune, demyelinating disease of the central nervous system (CNS). MS is an incurable disease. The goal of disease-modifying therapies (DMT) is to slow the progression of the disease, prevent relapses and increase the patient’s overall quality of life. According to the World Health Organisation definition, adherence means the extent to which a person’s medication-taking behaviour corresponds with the agreed upon treatment recommendations from a healthcare provider. Accurate adherence is necessary for efficient treatment. Non-adherence is related to unsuccessful treatments, the risk of relapses and increased healthcare costs. The aim of this study is to present the main factors relating to non-adherence in MS patients.

The association between deprivation and the access to disease modifying therapies for multiple sclerosis: An England wide community-based study in the UK MS Register

BACKGROUND

Deprivation can impact the access to health interventions in publicly funded health systems where cost is not the dominant barrier. In this study we examined whether deprivation affected the access to disease modifying therapies (DMTs) for multiple sclerosis (MS).

METHODS

All English adults on the UK MS register with relapsing remitting MS who were diagnosed between 2010 and 2017, and after the age of 29 years were included. Deprivation was measured using postcode-based 2015 English index of multiple deprivation (IMD), which was divided into quintiles.

RESULTS

A total of 1449 participants were eligible and 531/1449 (36.6%) received DMTs. Participants who lived in more deprived areas, based on their IMD scores, were significantly less likely to receive DMTs (odds ratio = 0.69, 95% Confidence interval = 0.49 to 0.98); barriers to housing and services contributed to this disparity. The Nagelkerke R² value of these models showed that 2% of variation in accessing DMTs were dependant on deprivation.

CONCLUSIONS

Deprivation, as measured by IMD, negatively influences the access to DMTs in England. Our findings also suggest that the lack of access to local MS DMT clinics in deprived areas may contribute to this disparity.

Predictors of adherence and persistence to disease-modifying therapies in Multiple Sclerosis

BACKGROUND AND AIMS

In multiple sclerosis (MS), non-adherence/non-persistence is related to suboptimal response to treatment, including disease relapses and the need for more expensive healthcare. The aim of this study was to identify predictors related to adherence to disease modifying therapies (DMTs) in a cohort of Argentinian MS patients.

METHODS

We conducted a cross-sectional study at the National Medical Care Program from Argentina. MS patients with at least one claim for a DMT from 1 January 2017 to 1 October 2017 were identified. A telephone survey was performed to assess clinical and demographic factors. The medication possession ratio (MPR) was used to estimate adherence; MPR <80% defined non-adherence. Associations were studied using a logistic regression model.

RESULTS

Our database included 648 MS patients. A total of 360 patients (60% females, mean age 55.3 years) accepted to participate. Of these, 308 (85.5%) patients were receiving DMT at the time of the survey. Some 198 (63.7%) were receiving injectable therapies. Optimal adherence was 47.7%. Adherence was associated with oral medication [odds ratio (OR) 1.83 95% confidence interval (CI) 1.13-3.00, p = 0.014]. A factor related to oral drugs was higher educational level (OR 2.86 95%CI 1.41-5.81, p = 0.004).

CONCLUSION

This real-world study showed better adherence and persistence on treatment with oral therapies in MS patients in Argentina.

Association between multiple sclerosis disease severity and adherence to disease-modifying therapies

BACKGROUND: For multiple sclerosis (MS) patients taking disease-modifying therapies (DMTs), adherence to treatment is a key component of achieving beneficial outcomes, such as delayed disease progression and the reduction and prevention of symptoms and relapses. OBJECTIVES: The aim of this study was to assess the impact of a claims-based measure of MS disease severity on DMT adherence in a one-year study period. METHODS: Patients were identified from Humana Medicare Advantage claims data from January 1, 2013 to December 31, 2015. Patients over the age of 18 with at least 12 months of continuous enrollment and > 1 outpatient MS visit with DMT use prior to the index date were included. Patients who switched DMT type (oral, platform, IV) during the study period were excluded. Medication possession ratios (MPR) for DMTs were calculated from pharmacy and medical claims over 12 months of claims data, and a previously developed claims algorithm was used to determine MS disease severity. Patients with MPRs of 0.8 or higher were considered adherent to DMT treatment. Multivariable logistic regression was used to evaluate the association of MS disease severity, gender, DMT type, and age category with DMT adherence. RESULTS: The study population of 3,347 patients had an average MPR of 84.7 (75% were classified as adherent). Multivariable logistic analysis demonstrated that compared to the 18-45 age group, the 46-64 and 65+ age groups were 1.33 (OR: 1.33 [95% CI 1.08-1.64]) and 1.55 (OR: 1.55, [95% CI 1.18-2.05]) times more likely to be adherent. Patients with a high level of MS disease severity were 53% (OR: 0.47, [95% CI 0.36-0.62]) less likely to be adherent compared to those with low MS disease severity. No significant difference was identified for gender or DMT type (oral, platform, or IV). CONCLUSIONS: Increased age and lower MS disease severity were associated with better DMT adherence. MS disease severity should be considered when assessing risk for low DMT adherence. DISCLOSURES: No funding supported this project. The authors have nothing to disclose. Preliminary results were previously presented virtually at AMCP Annual 2020 in April 2020.

Pilot Study of Videos to Deliver Mindfulness-Based Art Therapy for Adults With Multiple Sclerosis

BACKGROUND

Mindfulness-based art therapy (MBAT) has been shown to provide a strategy for adults with multiple sclerosis (MS) to self-manage their symptoms. There is a need for the use of an MBAT intervention that can be delivered in any setting for adults with MS. The purpose of this pilot feasibility study was to test the feasibility and acceptability of an MBAT intervention delivered via videoconference.

METHODS

We developed an MBAT intervention to be delivered by videoconference to adults with MS recruited from an academic center registry. We also conducted phone interviews to collect acceptability data.

RESULTS

Most of the participants (n = 5) were very positive about the MBAT video sessions and stated content as clear and easy to follow and understand. The time and delivering method were acceptable.

CONCLUSION

Mindfulness-based art therapy sessions delivered through videoconference are acceptable and feasible for adults with MS.

Use of a claims-based algorithm to estimate disease severity in the multiple sclerosis Medicare population

BACKGROUND/OBJECTIVE

To compare algorithm determined disease severity, risk of multiple sclerosis (MS) relapse, and MS-related hospitalization between the age-eligible and disability-eligible MS Medicare populations.

METHODS

Using the Humana claims dataset (2013 - 2015), patients were divided into Medicare age-eligible and disability-eligible groups. A previously developed algorithm, which used MS symptoms and healthcare utilization to categorize MS disease severity into three groups (low, moderate, high) at baseline was employed. Flexible parametric and Cox proportional hazard models were used to estimate the risk for MS relapses and MS-related hospitalizations among the MS disease severity groups and the two eligibility cohorts in the follow-up period.

RESULTS

Of the overall sample (N = 6,559), the majority (N = 4,813, 73.4%) were disability-eligible and in the low disease severity group (N = 4,468, 68.1%). In 10 of 16 disease severity algorithm predictors, the prevalence of these predictors was significantly (p<0.001) higher in the disability-eligible group compared to the age-eligible group. Survival analyses revealed that the disability-eligible group had a significantly higher risk for follow-up MS relapses and follow-up MS-related hospitalizations (HR = 1.79 [CI 1.54 - 2.08] and HR = 1.38 [CI 1.11-1.72], respectively) compared to those in the age-eligible group. When both eligibility and disease severity were considered in the model increases in hazard ratios corresponded generally to increases in disease severity. However, the type of Medicare eligibility does not appear to have a clear pattern across MS disease severity groups for either MS relapse or hospitalizations, CONCLUSION: The disability-eligible Medicare population had a significantly higher prevalence of MS comorbidities and higher MS severity scores at baseline. In addition, they had a higher risk for MS-related relapses and MS-related hospitalizations in the follow-up period. It is important to account for disability status when assessing disease severity and healthcare utilization.

Characteristics of a population-based multiple sclerosis cohort treated with disease-modifying drugs in a universal healthcare setting

Background: Relatively little is known about the use of disease-modifying drugs (DMDs) for multiple sclerosis (MS) in the population-based universal healthcare setting. This study aimed to describe the characteristics of a population-based cohort with MS and their DMD exposure in four Canadian provinces. Methods: We identified all adults (aged ≥18 years) with MS using linked population-based health administrative data. Individuals were followed from the most recent of their first MS or demyelinating event or 1 January 1996(study entry), to the earliest of death, emigration, or 31 March 2018(study end). Cohort characteristics examined included sex, age, socioeconomic status, and comorbidity burden. Results: Overall, 10,418/35,894 (29%) of MS cases filled a DMD prescription during the 22-year study period. Most were women (n = 7,683/10,418;74%), and 17% (n = 1,745/10,418) had some comorbidity (Charlson Comorbidity Index≥1) at study entry. Nearly 20% (n = 1,745/10,418) were aged ≥50 when filling their first DMD; the mean age was 39.6 years. Conclusions: Almost 1 in 6 people with MS had at least some comorbidity, and nearly 1 in 6 were ≥50 years old at the time of their first DMD. As these individuals are typically excluded from clinical trials, findings illustrate the need to understand the harms and benefits of DMD use in these understudied groups.