The effects of clinical interventions on health-related quality of life in multiple sclerosis: a meta-analysis

Disability, health-related quality of life, and self-concept change in people with multiple sclerosis: A moderated mediation

BACKGROUND

Disability is a key factor related to self-concept change following a Multiple Sclerosis (MS) diagnosis. Psychosocial factors (e.g., social integration, marital support) are also associated with changing self-concept in people with MS (pwMS). What remains unclear however, is whether psychosocial factors account for the relationship between disability and self-concept change. The current study aimed to investigate the potential mediation effect of Health-Related Quality of Life (HRQoL) on the relationship between disability and self-concept change in pwMS, and whether relationship satisfaction is a moderator of the mediated relationship.

METHOD

Nine hundred and ninety-five pwMS (79.5 % female; Age M = 59.72 years, SD = 11.15) completed measures of disability, HRQoL, and self-concept change. Of these participants, seven hundred and twenty-six pwMS who indicated they were currently in a relationship also completed a measure of relationship satisfaction.

RESULTS

A moderated mediation (conditional process) analysis indicated that the relationship between disability and self-concept change was partially mediated by HRQoL. A further parallel mediation found that across the eight subdomains of HRQoL, only participants' reported levels of 'relationships' and 'coping' significantly mediated the relationship between disability and self-concept change. However, for those participants in a relationship, relationship satisfaction did not moderate any mediation effects.

CONCLUSION

The findings highlight the role that perceptions of HRQoL in some domains may have in explaining the relationship between disability and self-concept change. Further research is needed to explicate the causal direction of these relationships through longitudinal studies.

Consensus quality indicators for monitoring multiple sclerosis

Multiple sclerosis (MS) as a chronic, degenerative autoimmune disease of the central nervous system has a longitudinal and heterogeneous course with increasing treatment options and risk profiles requiring constant monitoring of a growing number of parameters. Despite treatment guidelines, there is a lack of strategic and individualised monitoring pathways, including respective quality indicators (QIs). To address this, we systematically developed transparent, traceable, and measurable QIs for MS monitoring. Through literature review, expert discussions, and consensus-building, existing QIs were identified and refined. In a two-stage online Delphi process involving MS specialists (on average 53 years old and with 25 years of professional experience), the QIs were evaluated for content, clarity, and intelligibility, resulting in a set of 24 QIs and checklists to assess the quality of care. The final QIs provide a structured approach to document, monitor, and enhance the quality of care for people with MS across their treatment journey.

Fostering quality of life in young adults living with multiple sclerosis: a pilot study of a co-created integrated intervention

Introduction

Multiple sclerosis (MS) is generally diagnosed at an early age, making the acceptance of this chronic disease challenging. Research dedicated to young adults with MS (YawMS) is still limited. A biopsychosocial co-created intervention for YawMS integrating social, physical and psychological activities was developed (ESPRIMO intervention) in order to improve the quality of life (QoL) and well-being. This pre-post intervention assessment study examines the feasibility of the ESPRIMO intervention and its signal of efficacy.

Methods

Inclusion criteria were: age 18-45 years, MS diagnosis, Expanded Disability Status Scale score < 3.5. After giving informed consent, YawMS completed a battery of questionnaires, which was repeated after the intervention. The battery included a bespoke feasibility scale, the COOP/WONCA charts, and the Short Form-12 Health Survey (SF-12).

Results

Fifty-three YAwMS were enrolled and 43 (81.1%) completed the intervention. The majority of the sample positively rated the pleasantness, usefulness and feasibility of the intervention. A significant change in the COOP/WONCA "general QoL" chart (t = 3.65; p < 0.01) and SF-12 mental wellbeing component (t = -3.17; p < 0.01) was found.

Discussion

ESPRIMO is an innovative intervention that is feasible; preliminary results show an improvement in QoL and mental wellbeing. Further studies are needed to test its efficacy and evaluate future implementation in health services.Clinical trial registration: ClinicalTrials.gov, NCT04431323.

Neuromuscular Electrical Stimulation Does Not Influence Spinal Excitability in Multiple Sclerosis Patients

(1) Background: Neuromuscular electrical stimulation (NMES) has beneficial effects on physical functions in Multiple sclerosis (MS) patients. However, the neurophysiological mechanisms underlying these functional improvements are still unclear. This study aims at comparing acute responses in spinal excitability, as measured by soleus Hoffmann reflex (H-reflex), between MS patients and healthy individuals, under three experimental conditions involving the ankle planta flexor muscles: (1) passive NMES (pNMES); (2) NMES superimposed onto isometric voluntary contraction (NMES+); and (3) isometric voluntary contraction (ISO). (2) Methods: In total, 20 MS patients (MS) and 20 healthy individuals as the control group (CG) took part in a single experimental session. Under each condition, participants performed 15 repetitions of 6 s at 20% of maximal voluntary isometric contraction, with 6 s of recovery between repetitions. Before and after each condition, H-reflex amplitudes were recorded. (3) Results: In MS, H-reflex amplitude did not change under any experimental condition (ISO: p = 0.506; pNMES: p = 0.068; NMES+: p = 0.126). In CG, H-reflex amplitude significantly increased under NMES+ (p = 0.01), decreased under pNMES (p < 0.000) and was unaltered under ISO (p = 0.829). (4) Conclusions: The different H-reflex responses between MS and CG might reflect a reduced ability of MS patients in modulating spinal excitability.

The MoxFo initiative - outcomes: Outcome measures in studies of exercise training in multiple sclerosis; scoping review of reviews and classification according to the ICF framework

BACKGROUND

The number of published studies of exercise training in multiple sclerosis (MS) has grown exponentially with increasing numbers of outcomes capturing exercise effects. This has complicated the selection of relevant indicators and interpretation of intervention effects.

OBJECTIVES

The Outcomes subgroup of the MoXFo initiative aimed to (1) identify outcome measures and biomarkers in studies of exercise training in MS; (2) systematically map retrieved outcomes to International Classification of Functioning, Disability and Health (ICF) categories; (3) identify gaps where relevant ICF categories have been omitted.

METHODS

Electronic databases and registers were searched from 2010 to July 2020 to identify systematic reviews or meta-analyses of controlled trials of exercise training on any outcome in MS. Retrieved outcomes/biomarkers were mapped to the corresponding ICF category.

RESULTS

Eighty-one review articles reporting 235 different outcomes were included. The outcomes corresponded to 15 chapters and 45 categories within the ICF. Outcomes mapped primarily to body function (30 categories) and activities and participation (9 categories) components. Few outcomes mapped to body structures (2 categories) or environmental factors (1 category).

CONCLUSION

This sets the stage to develop a resource for researchers/clinicians that will aid in the selection of appropriate outcomes/biomarkers when examining exercise effects in MS.

The Preference-Based Multiple Sclerosis Index: an assessment of its psychometric properties and translation into Turkish

PURPOSE

To translate Preference-Based Multiple Sclerosis Index (PBMSI) into Turkish, investigate its psychometric properties and differences between its two scoring algorithms: PBMSI-Rating Scale (PBMSI-RS) and PBMSI-Standard Gamble (PBMSI-SG).

METHODS

An expert committee supervised the translation process. Psychometric properties were evaluated in 104 people with multiple sclerosis. Exploratory common factor analysis was used to investigate structural validity. Convergent validity was assessed by formulating hypotheses about correlations between PBMSI and other HRQL measures, disability level, walking-related measures, and MS symptoms. Known-groups validity was assessed against different measures of disability and walking capacity. Test-retest reliability was assessed by calculating the intraclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable change (MDC95%).

RESULTS

Factor analysis revealed one factor (Eigenvalue = 2.46). PBMSI-RS and PBMSI-SG correlated significantly with other measures (p < .001). Both could differentiate between individuals with different levels of disability and walking capacity (p < .05, d  ≥  0.50). Relative test-retest reliability was moderate for PBMSI-RS (ICC = 0.75) and good for PBMSI-SG (ICC = 0.83). SEM and MDC95% values were 0.16 and 0.44 for PBMSI-RS and 0.10 and 0.28 for PBMSI-SG, respectively.

CONCLUSION

Turkish version of PBMSI has good psychometric properties to assess health-related quality of life in people with multiple sclerosis. PBMSI-SG should be preferred over PBMSI-RS.IMPLICATIONS FOR REHABILITATIONHealth-related quality of life is often used as a primary or secondary endpoint in multiple sclerosis research.The Preference-Based Multiple Sclerosis Index is the first preference-based health-related quality of life measure developed in multiple sclerosis using patient preferences.Preference-Based Multiple Sclerosis Index was translated to Turkish and demonstrated good psychometric properties, including structural, convergent, known-groups validity, internal consistency, and test-retest reliability.Professionals working in the field of multiple sclerosis research and rehabilitation may benefit from using the Preference-Based Multiple Sclerosis Index as it is a short and psychometrically robust instrument.

The effect of nurse practitioner (NP-led) care on health-related quality of life in people with multiple sclerosis - a randomized trial

Background

Care for People with Multiple Sclerosis (PwMS) is increasingly complex, requiring innovations in care. Canada has high rates of MS; it is challenging for general neurologists to optimally care for PwMS with busy office practices. The aim of this study was to evaluate the effects of add-on Nurse Practitioner (NP)-led care for PwMS on depression and anxiety (Hospital Anxiety and Depression Scale, HADS), compared to usual care (community neurologist, family physician).

Methods

PwMS followed by community neurologists were randomized to add-on NP-led or Usual care for 6 months. Primary outcome was the change in HADS at 3 months. Secondary outcomes were HADS (6 months), EQ5D, MSIF, CAREQOL-MS, at 3 and 6 months, and Consultant Satisfaction Survey (6 months).

Results

We recruited 248 participants; 228 completed the trial (NP-led care arm n = 120, Usual care arm n = 108). There were no significant baseline differences between groups. Study subjects were highly educated (71.05%), working full-time (41.23%), living independently (68.86%), with mean age of 47.32 (11.09), mean EDSS 2.53 (SD 2.06), mean duration since MS diagnosis 12.18 years (SD 8.82) and 85% had relapsing remitting MS. Mean change in HADS depression (3 months) was: -0.41 (SD 2.81) NP-led care group vs 1.11 (2.98) Usual care group p = 0.001, sustained at 6 months; for anxiety, − 0.32 (2.73) NP-led care group vs 0.42 (2.82) Usual care group, p = 0.059. Other secondary outcomes were not significantly different. There was no difference in satisfaction of care in the NP-led care arm (63.83 (5.63)) vs Usual care (62.82 (5.45)), p = 0.194).

Conclusion

Add-on NP-led care improved depression compared to usual neurologist care and 3 and 6 months in PwMS, and there was no difference in satisfaction with care. Further research is needed to explore how NPs could enrich care provided for PwMS in healthcare settings.

Trial registration

Retrospectively registered on clinicaltrials.gov (ClinicalTrials.gov Identifier: NCT04388592, 14/05/2020).

Supplementary Information

The online version contains supplementary material available at 10.1186/s12883-022-02809-9.

Nursing Interventions Focusing on Self-efficacy for Patients With Multiple Sclerosis in Rehabilitation: A Systematic Review

BACKGROUND

Rehabilitative nursing interventions are vital in the treatment of multiple sclerosis (MS), but there is a lack of evidence on the effectiveness of such interventions. This review aims to summarize outcomes of nurse-led rehabilitation interventions for patients with MS, focusing on patients' self-efficacy and self-management and their satisfaction with the intervention. This review is the first step of our overarching goal of developing, implementing, and evaluating a research-supported nursing consultation intervention in inpatient rehabilitation.

METHODS

We searched 3 databases from their dates of inception until April 2020 (and performed another search in August 2021) for studies involving adult patients diagnosed as having MS. We focused on studies with interventions aimed at self-efficacy and self-management of MS and studies on intervention satisfaction. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses.

RESULTS

We included 4 studies in this review with a total of 271 participants. All interventions were educational and included training programs. All studies assessed self-efficacy, and all identified an improvement in self-efficacy, particularly through group training interventions. One study focused on self-management, reporting an improvement resulting from the intervention. Two studies evaluating satisfaction with the intervention obtained good overall satisfaction scores from participants, and 1 study's program was strongly recommended by participants.

CONCLUSIONS

This review indicates that self-efficacy and self-management abilities may be effectively promoted, particularly through group training interventions. An intervention tailored and adapted to the needs of patients with MS may promote satisfaction with the intervention and might consequently improve adherence to rehabilitation interventions.

Aspectos del estilo de vida en personas con esclerosis múltiple antes y durante la pandemia COVID-19: resultado de una encuesta en Argentina

Introducción

Un estilo de vida poco saludable tendría influencia negativa en la evolución de la esclerosis múltiple (EM). La pandemia de COVID-19 ha producido cambios que podrían haber modificado el mismo. Los objetivos fueron evaluar aspectos del estilo de vida de personas con EM (pcEM) integrantes de una asociación de pacientes de Argentina, previo y durante la pandemia, las causas de este y si recibieron consejos médicos sobre el tema.

Sujetos y métodos

Estudio observacional, las pcEM fueron convocadas a través de una asociación de pacientes para responder encuestas on line en noviembre de 2019 y octubre de 2020. Se recolectaron datos demográficos, de la enfermedad, talla, peso, tabaquismo, alimentación, actividad física, consumo de alcohol y sobre la atención médica.

Resultados

208 pcEM. Mujeres: 76,4%. 43,76 años (± 10,7). Cumple con la actividad física recomendada el 40,4%, 5 porciones de frutas y verduras diarias el 13,9%, tabaquismo el 24,5%, consumo de alcohol de riesgo el 12,5%, sobrepeso + obesidad el 53,4%. En pandemia disminuyó el tabaquismo (24,9% vs 20%; p = 0,004), aumentó el peso (BMI = 26,1 vs 27,4; p = 0,001) y disminuyó la actividad física (39,3% vs 31,5%; p = 0,016). Recibieron regularmente consejos sobre ejercicio físico el 54,3%, sobre dieta saludable el 32,4% y sobre cesación tabáquica el 33,3%.

Conclusiones

Un importante porcentaje de las pcEM presentan aspectos del estilo de vida no saludables. En pandemia se observó: aumento de peso, aumento del sedentarismo y disminución del tabaquismo. No se realizaron frecuentemente los consejos sobre estilo de vida. Son necesarios nuevos estudios para evaluar cómo mejorar el estilo de vida y su implicancia en la evolución y la calidad de vida.

Measuring the effects of nurse practitioner (NP)-led care on depression and anxiety levels in people with multiple sclerosis: a study protocol for a randomized controlled trial

Background

Canada has one of the highest rates of multiple sclerosis (MS) in the world. Treatments and supports for people with MS (PwMS) have become increasingly complex, requiring individualized and adaptive care. Specialized NPs provide advanced skills to those with complex medical conditions, with potential to enhance the health, functioning, and quality of life for PwMS. This study aims to determine the effect of a Nurse Practitioner (NP) on depression and anxiety levels in PwMS.

Methods

We will perform a parallel randomized controlled trial. PwMS who are followed by general private-practice neurologists will be randomly assigned to the intervention group (NP-led care) or the ‘usual care’ control group (general neurologist or family physician and registered nurse support). In the intervention group, the NP will assess and provide care to the MS patient and their caregiver at a baseline visit, with 3-month and 6-month follow-up visits. PwMS in the control group will receive usual care provided by their community neurologists or family physicians with the standard assistance provided by registered nurses experienced in MS care. The primary outcome will be the difference in change in the patient’s anxiety and depression scores as measured by the validated Hospital Anxiety and Depression Scale (HADS) questionnaire at 3 months. Secondary outcomes will include difference in change in HADS at 6 months; Modified Fatigue Impact Scale scores (MSIF) at 3 and 6 months; EQ-5D scores at 3 and 6 months; caregiver health-related quality of life in MS measures (CAREQOL-MS) at 3 and 6 months; number of visits and phone calls to healthcare professionals recorded by patient, and satisfaction with NP-led care vs usual care measured by the validated Consultant Satisfaction Questionnaire.

Discussion

Findings from this study will contribute to exploring benefits of advanced nursing practitioner interventions for PwMS followed by general neurologists and family physicians in a community setting. It will provide evidence of the benefits of NP-led care for PwMS and offer an alternative healthcare resource for management of MS.

Trial registration

ClinicalTrials.govPro00069595. Retrospectively registered on June 26, 2020. Protocol version: January 2017, version 1.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13063-021-05726-3.

Effective rehabilitation interventions and participation among people with multiple sclerosis: an overview of reviews

BACKGROUND

Multiple sclerosis (MS) is the most common cause of non-traumatic disability in people aged 10 to 65 years. Evidence exists for the effectiveness of multidisciplinary rehabilitation and exercise. However, the effectiveness of other rehabilitation approaches in MS needs further evaluation.

OBJECTIVE

We aimed to systematically synthesize and evaluate knowledge on effectiveness of rehabilitation interventions and determinants for participation among people with MS (pwMS) to inform clinical guidelines on rehabilitation.

METHODS

Joanna Briggs Institute methodology was used. PubMed, Embase, CINAHL, PsycINFO and Web of Science were searched for reviews, systematic reviews, meta-analyses, and meta-syntheses published during 2009-2019. All types of rehabilitation interventions provided to pwMS at any time and in all settings were eligible. Two reviewers independently screened and extracted data. The most recently published reviews on mixed and specific modalities were included. The findings were reported in a narrative summary and a mixed-methods analysis.

RESULTS

Among 108 eligible reviews, 6 qualitative or mixed-methods reviews and 66 quantitative reviews were included (total pwMS >90,000). This overview provides solid evidence for the effectiveness of a spectrum of modalities. Among the modalities, there was strong evidence for the effectiveness of multidisciplinary, cognitive and exercise approaches, physiotherapy, and occupational therapy, including full body training on functioning, and participation outcomes. Employment significantly affected quality of life; thus, vocational rehabilitation should be initiated early. Healthcare professionals should identify personal factors including relations and coping, and the rehabilitation process should involve partners or close family.

CONCLUSIONS

The mixed-methods analysis revealed insufficient consensus between the perspectives of pwMS on their rehabilitation and reported effects, indicating that further research should target the experiences of pwMS. Furthermore, rehabilitation should be patient-centred, focus on the complexity of needs, and be organised and performed by an experienced multidisciplinary team. Evidence-based rehabilitation should be initiated early after pwMS are diagnosed and follow international guidelines. Database registration. PROSPERO ID (CRD42020152422).

Development of a Web-Based Mindfulness Program for People With Multiple Sclerosis: Qualitative Co-Design Study

Background

Mindfulness-based stress reduction is an efficacious treatment for people with chronic health problems; however, it is highly intensive and time-consuming, which is a barrier for service provision.

Objective

This study aims to develop an internet-delivered adapted version of mindfulness-based stress reduction for people with multiple sclerosis to make the intervention more accessible.

Methods

We co-designed a web-based mindfulness program with end users, that is, people with multiple sclerosis (N=19). Iterative feedback was also collected from a subsample of the initial group of end users (n=11), and the program was reviewed by experts (n=8).

Results

We identified three main themes common to people with multiple sclerosis: dealing with uncertainty and fears for the future, grief and loss, and social isolation. These themes were incorporated into narratives throughout the program. People with multiple sclerosis who reviewed the program gave feedback that the program was relatable, feasible, and acceptable. Experts agreed that the program appropriately represented the main tenets of mindfulness. Iterative feedback was used to further refine the program.

Conclusions

The web-based mindfulness program that we developed was viewed positively by both experts and end users. The program reflects common concerns for people with multiple sclerosis and has the potential to meet important unmet psychological needs. A randomized controlled trial was planned to determine the efficacy of the program.

Dual-Task Training Program for Older Adults: Blending Gait, Visuomotor and Cognitive Training

Objective: Physical and cognitive impairments are common with aging and often coexist. Changes in the level of physical and mental activity are prognostic for adverse health events and falls. Dual-task (DT) training programs that can improve mobility and cognition simultaneously can bring significant improvements in rehabilitation. The objective of this mixed methods exploratory RCT was to provide evidence for the feasibility and therapeutic value of a novel game-assisted DT exercise program in older adults. Methods: Twenty-two community dwelling participants, between the ages of 70-85 were randomized to either dual-task treadmill walking (DT-TR) or dual-task recumbent bicycle (DT-RC). Both groups viewed a standard LED computer monitor and performed a range of cognitive game tasks while walking or cycling; made possible with the use of a "hands-free", miniature, inertial-based computer mouse. Participants performed their respective 1-h DT exercise program twice a week, for 12 weeks at a community fitness centre. Semi-structured interviews and qualitative analysis was conducted to evaluate the participant's experiences with the exercise program. Quantitative analysis included measures of standing balance, gait function (spatiotemporal gait variable), visuomotor and executive cognitive function, tested under single and DT walking conditions. Results: Compliance was 100% for all 22 participants. Four themes captured the range of participant's experiences and opinions: 1) reasons for participation, 2) difficulties with using the technologies, 3) engagement with the computer games, and 4) positive effects of the program. Both groups showed significant improvements in standing balance performance, visuomotor and visuospatial executive function. However, significant improvement in dual task gait function was observed only in the DT-TR group. Medium to large effect sizes were observed for most balance, spatiotemporal gait variables, and cognitive performance measure. Conclusion: With only minor difficulties with the technology being reported, the findings demonstrate feasible trial procedures and acceptable DT oriented training with a high compliance rate and positive outcomes. These findings support further research and development, and will direct the next phase of a full-scale RCT.

Identifying Progression in Multiple Sclerosis: New Perspectives

The identification of progression in multiple sclerosis is typically retrospective. Given the profound burden of progressive multiple sclerosis, and the recent development of effective treatments for these patients, there is a need to establish measures capable of identifying progressive multiple sclerosis early in the disease course. Starting from recent pathological findings, this review assesses the state of the art of potential measures able to predict progressive multiple sclerosis. Future promising biomarkers that might shed light on mechanisms of progression are also discussed. Finally, expansion of the concept of progressive multiple sclerosis, by including an assessment of cognition, patient-reported outcomes, and comorbidities, is considered. ANN NEUROL 2020;88:438-452.

Feasibility of a smartphone app to enhance physical activity in progressive MS: a pilot randomized controlled pilot trial over three months

BACKGROUND

People with chronic progressive multiple sclerosis (CPMS) have limited options in medical treatment. Enhancing physical activity (PA) might promote neuroregeneration in multiple sclerosis (MS) and positively influence disability, thus providing an alternative to medical treatment. Previous studies indicate that evidence-based patient information (EBPI) is essential for inducing behavioral change, e.g. enhancing PA.

OBJECTIVE

To investigate feasibility of a smartphone app providing EBPI about the benefit of PA and a simple activity feedback to enhance PA in people with CPMS in a pilot randomized controlled trial over 3 months.

METHODS

Thirty-eight people with CPMS (mean age 51 years, median Expanded Disability Status Scale 4.0) were 1:1 randomized into either a control group (n = 20) or an intervention group (n = 18). The intervention group received access to a multimedia EBPI app including activity feedback, texts, figures and videos. In the control group, participants received a leaflet with unspecific information about exercising in general. The EPBI itself was designed based on a systematic review. At baseline and after 3 months, all participants underwent clinical performance tests, filled in questionnaires and received an activity monitor (Actigraph®) for 7 days. The primary endpoint was the rate of responders defined as participants with a 20% increase of physical acitivity (time of moderate or vigiorous PA-MVPA) or 20% increase of the number of steps, both assessed with the activity monitor. As secondary endpoints, we compared accelerometry, performance and questionnaires adjusted for baseline measurments between the groups (ANCOVA). Moreover, we used questionnaires to compare knowledge about exercise (activity requiring physical effort, carried out to improve or improve health and fitness) in MS, usability of the app in general and motivation towards a more active lifestyle after 3 months in both groups.

RESULTS

The groups showed significant differences in disease duration and PA according to the Godin-Leisure Time Exercise Questionnaire at baseline. After 3 months, we detected no difference in the rate of responders, which was an overall 22%. However, MVPA significantly increased in both groups (p < 0.001) and the intervention group tended to have a higher motivation towards a more active lifestyle (Cohens D = 0.7, p = 0.09) as measured by the questionnaire. Reponses also showed, that participants appreciated the app but claimed a lack of interactivity as a short-coming.

CONCLUSION

Just providing information in a multimedia smartphone app did not enhance physical activitiy more than a simple leaflet in this small pilot trial in CPMS. However, the group of app users tended to have a higher motivation towards a more active lifestyle. Overall, the concept of a smartphone app to support an active lifestyle in MS is highly appreciated by participants.

Benefits and harms of medical cannabis: a scoping review of systematic reviews

BACKGROUND

There has been increased interest in the role of cannabis for treating medical conditions. The availability of different cannabis-based products can make the side effects of exposure unpredictable. We sought to conduct a scoping review of systematic reviews assessing benefits and harms of cannabis-based medicines for any condition.

METHODS

A protocol was followed throughout the conduct of this scoping review. A protocol-guided scoping review conduct. Searches of bibliographic databases (e.g., MEDLINE®, Embase, PsycINFO, the Cochrane Library) and gray literature were performed. Two people selected and charted data from systematic reviews. Categorizations emerged during data synthesis. The reporting of results from systematic reviews was performed at a high level appropriate for a scoping review.

RESULTS

After screening 1975 citations, 72 systematic reviews were included. The reviews covered many conditions, the most common being pain management. Several reviews focused on management of pain as a symptom of conditions such as multiple sclerosis (MS), injury, and cancer. After pain, the most common symptoms treated were spasticity in MS, movement disturbances, nausea/vomiting, and mental health symptoms. An assessment of review findings lends to the understanding that, although in a small number of reviews results showed a benefit for reducing pain, the analysis approach and reporting in other reviews was sub-optimal, making it difficult to know how consistent findings are when considering pain in general. Adverse effects were reported in most reviews comparing cannabis with placebo (49/59, 83%) and in 20/24 (83%) of the reviews comparing cannabis to active drugs. Minor adverse effects (e.g., drowsiness, dizziness) were common and reported in over half of the reviews. Serious harms were not as common, but were reported in 21/59 (36%) reviews that reported on adverse effects. Overall, safety data was generally reported study-by-study, with few reviews synthesizing data. Only one review was rated as high quality, while the remaining were rated of moderate (n = 36) or low/critically low (n = 35) quality.

CONCLUSIONS

Results from the included reviews were mixed, with most reporting an inability to draw conclusions due to inconsistent findings and a lack of rigorous evidence. Mild harms were frequently reported, and it is possible the harms of cannabis-based medicines may outweigh benefits.

SYSTEMATIC REVIEW REGISTRATION

The protocol for this scoping review was posted in the Open Access (https://ruor.uottawa.ca/handle/10393/37247).

The evaluation of an online mindfulness program for people with multiple sclerosis: study protocol

BACKGROUND

Multiple sclerosis (MS) is a neurological disease of the central nervous system and is associated with many psychosocial symptoms that are difficult to manage including low mood, anxiety, fatigue and pain, as well as low health-related quality of life. Internet-based psychosocial interventions that use mindfulness-based approaches are gathering much attention in recent literature, particularly in the treatment of chronic illnesses. However, no large randomized controlled trials have been done examining the efficacy of such interventions for people with MS (PwMS).

METHODS/DESIGN

This study is a randomised controlled trial of an online mindfulness-based intervention (MBI) for PwMS. Participants will be randomised to receive either the MBI or offered the intervention after a waiting period. All participants will be assessed to determine whether they have a history of recurrent depressive disorder. The primary outcome will be severity of depression, according to the Centre of Epidemiology Depression Scale. Secondary outcomes will be anxiety severity, fatigue, pain and quality of life. Assessments will be conducted pre, post-treatment, at three and six-month follow-up. The online mindfulness-based program was developed in collaboration with end-users (n = 19 PwMS) who gave feedback about what would be feasible and acceptable, and the draft program was reviewed by both experts and patients.

DISCUSSION

Multiple sclerosis is the most common acquired chronic neurological disease amongst young adults and is associated with a range of symptoms that can be difficult to cope with. In face-to-face interventions, a MBI demonstrated the largest effect in a recent meta-analysis of psychological treatments for PwMS, but MBIs for PwMS have not been delivered online. Hence, this trial will confirm whether MBIs can be efficacious when delivered online. A range of symptoms are assessed as outcomes so that the nature of benefits associated with the online MBI can be ascertained.

TRIAL REGISTRATION

ACTRN12618001260213 . Date of Registration: 25/07/2018.

Effectiveness of Exercise Interventions for Pain Reduction in People With Multiple Sclerosis: A Systematic Review and Meta-analysis of Randomized Controlled Trials

OBJECTIVE

To systematically review the evidence of the effect of exercise compared with passive control on pain in people with multiple sclerosis.

DATA SOURCE AND STUDY SELECTION

Five electronic databases were searched for randomized controlled trials published up to March 2017 that recruited people with multiple sclerosis where exercise was the intervention and pain was an outcome (PROSPERO registration number CRD42017060489).

STATISTICAL ANALYSIS

A random-effects meta-analysis was conducted to estimate the standardized mean difference of the effect of exercise on pain between treatment and control groups. We assessed risk of bias, fitted meta-regression models to explore heterogeneity between studies, and assessed small study effects.

DATA SYNTHESIS

Ten studies met the inclusion criteria (total sample size=389), and all studies were at high risk of bias. We found that exercise interventions were associated with less pain compared with passive control groups (standardized mean difference=-.46; 95% CI, -.92 to .00). There was high between-study heterogeneity (I²=77.0%), which was not explained by the prespecified study characteristics. There was also some evidence of small study effects.

CONCLUSION

This is the first systematic review of the effect of exercise interventions on pain in people with multiple sclerosis, a chronic neurological disorder that affects 2.5 million people. We found some evidence that exercise compared with passive control alleviates pain in this population, but there were limitations in reporting and study quality with high risk of bias of individual studies and heterogeneity between studies.

A systematic critical review of physical activity aspects in clinical guidelines for multiple sclerosis

OBJECTIVE

This paper aims to evaluate the quality of clinical guidelines (CGs) for MS and to critically appraise physical activity-related recommendations.

DATA SOURCES

Medical databases (MEDLINE, TRIP), clearinghouses, and guideline developers. An expert was asked to confirm if the list of CGs was complete.

STUDY SELECTION

Evidence-based CGs specific to MS with recommendations including aspects of rehabilitation or physical activity were included.

DATA EXTRACTION

Two reviewers independently first assessed the methodological quality of the CGs based on the 23 items of the Appraisal of Guidelines for Research and Evaluation Instrument version two (AGREE II) and second evaluated the physical activity-related content quality using an instrument containing 14 items that was used for the development of the National Recommendations for Physical Activity in Germany.

DATA SYNTHESIS

For the AGREE II domains and the criteria for content quality, standardized domain scores were calculated.

RESULTS

Three CGs were included. The average scores for the methodological quality of the domains were: scope and purpose (91%), stakeholder involvement (81%), rigor of development (78%), clarity of presentation (93%), applicability (53%), and editorial independence (83%). The mean scores for physical activity-related content quality did not exceed 56% for any criteria.

CONCLUSIONS

Overall, this critical review shows that the methodological quality of CGs were moderate to good but physical activity-related content quality was heterogeneous and low. Results emphasize the need for more specific physical activity recommendations that incorporate multiple aspects of physical activity prescription.

Validation of the preference-based multiple sclerosis index

Background:

Preference-based measures of health-related quality of life (HRQL) are used as primary or secondary endpoints in multiple sclerosis (MS) research.

Objective:

The purpose of this paper was to evaluate the structural, convergent, and known-groups validity of the preference-based multiple sclerosis index (PBMSI) of HRQL in people with MS.

Methods:

Participants were recruited from three MS clinics in Montreal. Structural validity was assessed using polychoric correlation coefficients and factor analysis. To assess convergent validity, hypotheses were formulated about the strength of correlations between the PBMSI and other HRQL measures. Known-groups validity was assessed against different measures of disability.

Results:

The average age of the sample was 46 and 77% were women. Factor analysis supported the structural validity of the PBMSI; the items collectively were measuring one underlying construct. The PBMSI showed convergent validity against generic measures of HRQL, and known-groups validity between persons with different levels of disability.

Conclusion:

The results of this study support the construct validity of the PBMSI as an outcome measure of HRQL in MS. The PBMSI overcomes limitations observed with currently used HRQL measures in MS and may be used to contrast different interventions for people with MS.

Clinical outcome measures for progressive MS trials

Treatment options for progressive multiple sclerosis remain the main unmet need of the field. As the understanding of multiple sclerosis (MS) pathogenesis improves, new pathways and molecules will be tested for potential reparative, remyelinating, or neuroprotective effects. The clinical outcomes used will determine successful demonstration of beneficial treatment effects to regulatory agencies, clinicians, and persons with MS. This review focuses on clinical outcome measures including the Expanded Disability Status Scale, Multiple Sclerosis Functional Composite, and novel composite measures of disability. The paper also covers cognitive outcomes and screening tests for use in clinical trials. The growing importance of patient-reported outcomes and their suitability for clinical trials is also presented. The review aims to create consensus in regard to these topics and suggestions for future research.

A randomized study to evaluate the effect of exercise on fatigue in people with relapsing-remitting multiple sclerosis treated with fingolimod

Background

Fatigue is a major symptom of multiple sclerosis (MS) in patients, and it has been shown to improve with physical exercise. Although fingolimod might lessen fatigue, it is unclear how patients treated with fingolimod react to physical activity regarding fatigue.

Objective

This study evaluated the effect of an exercise intervention on fatigue in relapsing–remitting MS patients receiving fingolimod.

Methods

People with MS (PwMS) were randomized to either a structured internet-based exercise program (e-training) or no e-training intervention. The primary endpoint was the change in the Modified Fatigue Impact Scale (mFIS) after six months.

Results

The primary analysis showed no statistically significant difference between groups in the mFIS change. Subgroup analyses revealed a beneficial effect of physical exercise for PwMS with low aerobic capacity and with low aerobic capacity plus more severe fatigue. The incidence of adverse events was similar in both groups. No cardiovascular events were reported. The majority of PwMS were relapse free.

Conclusion

Physical exercise benefits on fatigue may depend on the physical capacity of the patient and requires individualized training. Consistent with previous studies, these results suggest that physical exercise generally does not impose a risk and that this holds true also for patients receiving fingolimod.

Trial registration: ClinicalTrials.gov, NCT01490840.

A systematic review of the effectiveness of self-management interventions in people with multiple sclerosis at improving depression, anxiety and quality of life

BACKGROUND

Self-management interventions have become increasingly popular in the management of long-term health conditions; however, little is known about their impact on psychological well-being in people with Multiple Sclerosis (MS).

PURPOSE

To examine the effectiveness of self-management interventions on improving depression, anxiety and health related quality of life in people with MS.

METHOD

A structured literature search was conducted for the years 2000 to 2016. The review process followed the PRISMA guidelines, and is registered with PROSPERO (no. CRD42016033925).

RESULTS

The review identified 10 RCT trials that fulfilled selection criteria and quality appraisal. Self-management interventions improved health-related quality of life in 6 out of 7 studies, with some evidence of improvement in depression and anxiety symptoms.

CONCLUSION

Although the results are promising more robust evaluation is required in order to determine the effectiveness of self-management interventions on depression, anxiety and quality of life in people with MS. Evaluation of the data was impeded by a number of methodological issues including incomplete content and delivery information for the intervention and the exclusion of participants representing the disease spectrum. Recommendations are made for service development and research quality improvement.

Effect of exercising at minimum recommendations of the multiple sclerosis exercise guideline combined with structured education or attention control education - secondary results of the step it up randomised controlled trial

BACKGROUND

Recent exercise guidelines for people with multiple sclerosis (MS) recommend a minimum of 30 min moderate intensity aerobic exercise and resistance exercise twice per week. This trial compared the secondary outcomes of a combined 10-week guideline based intervention and a Social Cognitive Theory (SCT) education programme with the same exercise intervention involving an attention control education.

METHODS

Physically inactive people with MS, scoring 0-3 on Patient Determined Disease Steps Scale, with no MS relapse or change in MS medication, were randomised to 10-week exercise plus SCT education or exercise plus attention control education conditions. Outcomes included fatigue, depression, anxiety, strength, physical activity, SCT constructs and impact of MS and were measured by a blinded assessor pre and post-intervention and 3 and 6 month follow up.

RESULTS

One hundred and seventy-four expressed interest, 92 were eligible and 65 enrolled. Using linear mixed effects models, the differences between groups on all secondary measures post-intervention and at follow-up were not significant. Post-hoc, exploratory, within group analysis identified improvements in both groups post intervention in fatigue (mean ∆(95% CI) SCT -4.99(-9.87, -0.21), p = 0.04, Control -7.68(-12.13, -3.23), p = 0.00), strength (SCT -1.51(-2.41, -0.60), p < 0.01, Control -1.55(-2.30, -0.79), p < 0.01), physical activity (SCT 9.85(5.45, 14.23), p < 0.01, Control 12.92(4.69, 20.89), goal setting (SCT 7.30(4.19, 10.4), p < 0.01, Control 5.96(2.92, 9.01), p < 0.01) and exercise planning (SCT 5.88(3.37, 8.39), p < 0.01, Control 3.76(1.27, 6.25), p < 0.01) that were maintained above baseline at 3 and 6 month follow up (all p < 0.05). Only the SCT group improved at 3 and 6 month follow up in physical impact of MS(-4.45(-8.68, -0.22), -4.12(-8.25, 0.01), anxiety(-1.76(-3.20, -0.31), -1.99(-3.28, -0.71), depression(-1.51(-2.89, -0.13), -1.02(-2.05, 0.01)) and cognition(5.04(2.51, 7.57), 3.05(0.81, 5.28), with a medium effect for cognition and fitness (Hedges' g 0.75(0.24, 1.25), 0.51(0.01, 1.00) at 3 month follow up.

CONCLUSIONS

There were no statistically significant differences between groups for the secondary outcomes once age, gender, time since diagnosis and type of MS were accounted for. However, within the SCT group only there were improvements in anxiety, depression, cognition and physical impact of MS. Exercising at the minimum guideline amount has a positive effect on fatigue, strength and PA that is sustained at 3 and 6 months following the cessation of the program.

TRIAL REGISTRATION

ClinicalTrials.gov, NCT02301442 , retrospectively registered on November 13th 2014.

Internet-Supported Physical Exercise Training for Persons with Multiple Sclerosis-A Randomised, Controlled Study

Physical exercise is effective in improving functional outcomes in persons with multiple sclerosis (pwMS). We evaluated the feasibility and effectiveness of internet-based exercise training (e-training) for pwMS on health-related quality of life (HrQoL). Secondary outcomes were muscle strength, aerobic capacity, lung function, physical activity, and fatigue. This is a randomised, controlled trial with a wait-list control group. Data were collected at baseline, after three and six months, and analysed using a hybrid linear model. One-hundred twenty-six pwMS participated in the home-based aerobic (1×/week) and strength training (2×/week) intervention that was supervised and documented via an internet-platform. The intervention group received e-training for six months, and the control group received e-training after a three months waiting period. Significant differences between the groups were only observed for muscle strength (knee flexion (effect size ES = 0.3, p = 0.003), knee extension (ES = 0.24, p = 0.015)), peak expiratory flow (ES = 0.2, p = 0.039), and sports activity (ES = 0.33, p = 0.001) after three months. E-training had no effect on HrQoL but did on muscle strength, lung function, and physical activity. It is a promising and feasible approach to facilitate large-scale, yet individual, training support.

Enrolling and keeping participants in multiple sclerosis self-management interventions: a systematic review and meta-analysis

OBJECTIVES

The objectives were to provide an estimate of expected enrolment and attrition rates based on published studies of existing self-management interventions for people with multiple sclerosis, and to identify contributing factors and impact on outcomes.

REVIEW METHODS

A systematic literature search was conducted using Ovid MEDLINE, PsychINFO, EMBASE, AMED, CINAHL, OT Seeker, PubMed, and the Cochrane Database of Systematic Reviews databases. Controlled trials with or without randomization using either a between-group or within-person design were included if they met specified criteria. A random-effect meta-regression analysis was conducted to estimate the overall enrolment and attrition proportions, effect of person- and study-related factors, and impact on outcomes.

RESULTS

A total of 48 studies, comprising 4446 persons were identified. The estimated enrolment rate was 50.3% (95% confidence interval (CI): 49.6 to 51.1) and the estimated attrition rates in the intervention and control groups were 16.8% (95% CI: 16.2 to 17.3) and 14.4% (95% CI: 13.8 to 14.9), respectively. The main reported reason for refusing to participate was lack of interest (70.6%), while the reported reasons for dropping out were mainly owing to medical issues (26.1%) and disliking the intervention (17.9%). Trial, programme, and patient-related variables were found to influence the enrolment and/or attrition rates. Studies that had a 10% higher attrition rate had an effect size that was larger by 0.19 (95% CI: 0.17 to 0.24).

CONCLUSION

Greater understanding of the factors associated with enrolment and attrition rates would help in planning and developing a more appealing self-management intervention that patients can easily accept and incorporate into their everyday lives.

Developing a Valuation Function for the Preference-Based Multiple Sclerosis Index: Comparison of Standard Gamble and Rating Scale

Objective

The standard gamble (SG) and rating scale (RS) are two approaches that can be employed to elicit health state preferences from patients in order to inform decision making. The objectives of this study were: (i) to contribute evidence towards the similarities and differences in the SG and the RS to reflect patient preferences, and (ii) to develop a multi-attribute utility function (MAUF) (i.e., scoring algorithm) for the PBMSI.

Study Design

Two samples were recruited for the study. The first sample provided cross-sectional data to generate the preference weights which were then used to develop (_D) the MAUF_D. The distribution of SG and RS were compared across levels of perceived difficulty. The second sample provided additional data to validate (_V) the MAUF, termed MAUF_V.

Results

The mean RS values ranged from 0.39 to 0.65, whereas the mean SG values were much higher ranging from 0.80 to 0.91. Correlations between the two methods were very low ranging from -0.29 to 0.15. Bland-Altman plots revealed the extent of differences in values produced by the two methods.

Conclusion

In contemplating trade-offs in the selection of a preference-based elicitation approach for a MAUF that could guide clinical decision making, results suggest the RS is preferable in terms of feasibility and validity for MS patients. The PBMSI with patient preferences shows promise as a measure of health-related quality of life for MS.

Web-based interventions in multiple sclerosis: the potential of tele-rehabilitation

The World Wide Web is increasingly used in therapeutic settings. In this regard, internet-based interventions have proven effective in ameliorating several health behaviors, amongst them physical activity behavior. Internet-delivered interventions have shown positive effects on physical activity and physical function in persons with MS (pwMS). In this review we give an overview on several online exercise programs for pwMS and discuss the advantages and drawbacks of web-based interventions. Although participants of online exercise programs reported a high acceptance and satisfaction with the intervention, decreasing compliance was a major issue. A possible remedy might be the implementation of game-design elements to increase compliance and long-term adherence to internet-delivered interventions. In addition we believe that the integration of social networks seems to be a promising strategy.

Systematic Review of Correlates and Determinants of Physical Activity in Persons With Multiple Sclerosis

OBJECTIVE

To review the current evidence regarding correlates and determinants of physical activity (PA) in persons with multiple sclerosis (pwMS).

DATA SOURCES

PubMed and Scopus (1980 to January 2015) and reference lists of eligible studies.

STUDY SELECTION

Eligible studies include adults with multiple sclerosis; have a cross-sectional or prospective observational design; or examine the effect of a theory-based intervention trial on PA, including a mediation analysis. Eligible studies also apply a quantitative assessment of PA and correlates or proposed mediators and are published in English or German language.

DATA EXTRACTION

Two reviewers independently evaluated the risk of bias, extracted data, and categorized variables according to the International Classification of Functioning, Disability and Health.

DATA SYNTHESIS

Consistency and the direction of associations were evaluated with a semiquantitative approach. Fifty-six publications with data from observational studies and 2 interventional studies provided evidence for 86 different variables. Consistent correlates of PA were the disability level, walking limitations in particular, PA-related self-efficacy, self-regulation constructs, employment status, and educational level. One interventional study provided evidence for a causal relation between self-regulation and PA. However, 59 of the 86 investigated variables in observational studies are based on 1 or 2 study findings, and most results stem from cross-sectional designs.

CONCLUSIONS

Beside the importance of the general disability level and walking limitations, the results highlight the importance of personal factors (eg, PA-related self-efficacy, self-regulatory constructs, sociodemographic factors). Limitations and implications of the current review are discussed. Research that is more rigorous is needed to better understand what affects PA in pwMS.

Perceptions of Participants in a Group, Community, Exercise Programme for People with Multiple Sclerosis

Purpose. The purpose of this study was to explore the perceptions of people with multiple sclerosis of a community based, group exercise programme. Method. A pragmatic programme evaluation approach using qualitative research design was adopted. Focus groups were used to gather data from 14 participants who had taken part in a RCT of community based exercise interventions for PwMS who used at most a stick to walk outdoors. Data were transcribed verbatim and thematic analysis was used to first identify categories and then to group them into themes. Results. Three themes emerged, psychological benefits, physical benefits, and knowledge gained. The psychological benefits included the role of the group as a social and motivational factor, empowerment, confidence, hope, sense of achievement, and pride. Physical benefits were improved energy and reduced fatigue and improved ability and participation. Knowledge gained caused a shift from thoughts that exercise might do harm, to sufficient knowledge that would give participants confidence to exercise themselves. The role of the group was a key element in the positive outcomes. Conclusions. The qualitative analysis supports the findings of the main trial confirming positive effects of community exercise interventions by reducing the impact of MS and fatigue and improving participation.

Physical activity and associated levels of disability and quality of life in people with multiple sclerosis: a large international survey

BACKGROUND

Multiple Sclerosis (MS) is a common neurodegenerative disease, which often has a devastating effect on physical and emotional wellbeing of people with MS (PwMS). Several studies have shown positive effects of physical activity (PA) on disability, health related quality of life (HRQOL), and other outcomes. However, many studies include only people with mild disability making it difficult to generalize findings to those with moderate or severe disability. This study investigated the associations between PA and HRQOL, relapse rate (RR), disability, and demographic variables in PwMS with varying disability.

METHODS

Through online platforms this large international survey recruited 2232 participants with MS who completed items regarding PA, MS and other health characteristics.

RESULTS

PwMS who were younger (p < .001), male (p = 0.006), and with lower body mass index (BMI) (p < .001) undertook more PA, which was associated with decreased disability (p < 0.001) and increased HRQOL measures (all p < 0.001). For the subsample of people with relapsing-remitting MS, PA was associated with a decreased RR (p = 0.009). Regression analyses showed that increased PA predicted clinically significant improvements in HRQOL while controlling for level of disability, age and gender. More specifically, increasing from low to moderate and to high PA increased estimated mean physical health composite from 47.7 to 56.0 to 59.9 respectively (25.6% change), mental health composite from 60.6 to 67.0 to 68.8 (13.5% change), energy subscale from 35.9 to 44.5 to 49.8 (38.7% change), social function subscale from 57.8 to 66.1 to 68.4 (18.3% change), and overall QOL subscale from 58.5 to 64.5 to 67.7 (15.7% change).

CONCLUSIONS

For PwMS, regardless of disability level, increased PA is related to better HRQOL in terms of energy, social functioning, mental and physical health. These are important findings that should be taken into consideration by clinicians treating PwMS.

Meditation as an adjunct to the management of multiple sclerosis

Background. Multiple sclerosis (MS) disease course is known to be adversely affected by several factors including stress. A proposed mechanism for decreasing stress and therefore decreasing MS morbidity and improving quality of life is meditation. This review aims to critically analyse the current literature regarding meditation and MS. Methods. Four major databases were used to search for English language papers published before March 2014 with the terms MS, multiple sclerosis, meditation, and mindfulness. Results. 12 pieces of primary literature fitting the selection criteria were selected: two were randomised controlled studies, four were cohort studies, and six were surveys. The current literature varies in quality; however common positive effects of meditation include improved quality of life (QOL) and improved coping skills. Conclusion. All studies suggest possible benefit to the use of meditation as an adjunct to the management of multiple sclerosis. Additional rigorous clinical trials are required to validate the existing findings and determine if meditation has an impact on disease course over time.

Relative contribution of cognitive and physical disability components to quality of life in MS

BACKGROUND

Information on the relative influence of cognitive and physical impairment on the quality of life in multiple sclerosis is currently limited and no scientific consensus has been reached yet.

OBJECTIVE

For this reason, we wanted to examine the relative contribution of cognitive and physical impairment measures comprised in the MSFC test on quality of life in MS.

METHODS

In the National MS Center Melsbroek, patients regularly undergo MSFC and EQ5D measurements. We investigated the correlations between the EQ5D, EQVAS and the MSFC and EDSS scores by the use of ANOVA and multilinear models.

RESULTS

We found a significant correlation between the EQVAS score and cognition in a univariate model. When including EDSS score and MSFC outcomes into the model, cognition was, however, excluded based on the Akaike Information Criterion. Cognition was, on the other hand, a significant predictor for the "Usual Activities" question of the EQ5D.

CONCLUSIONS

Although cognitive performance as measured on the PASAT-3s does not correlate with a patient's perceived quality of life in a multivariate model, it remains an important predictor for the patient's usual activities.

Cost-effectiveness of different interferon beta products for relapsing-remitting and secondary progressive multiple sclerosis: Decision analysis based on long-term clinical data and switchable treatments

BACKGROUND

Multiple sclerosis (MS) is a highly debilitating immune mediated disorder and the second most common cause of neurological disability in young and middle-aged adults. Iran is amongst high MS prevalence countries (50/100,000). Economic burden of MS is a topic of important deliberation in economic evaluations study. Therefore determining of cost-effectiveness interferon beta (INF β) and their copied biopharmaceuticals (CBPs) and biosimilars products is significant issue for assessment of affordability in Lower-middle-income countries (LMICs).

METHODS

A literature-based Markov model was developed to assess the cost-effectiveness of three INF βs products compared with placebo for managing a hypothetical cohort of patients diagnosed with relapsing remitting MS (RRMS) in Iran from a societal perspective. Health states were based on the Kurtzke Expanded Disability Status Scale (EDSS). Disease progression transition probabilities for symptom management and INF β therapies were obtained from natural history studies and multicenter randomized controlled trials and their long term follow up for RRMS and secondary progressive MS (SPMS). A cross sectional study has been developed to evaluate cost and utility. Transitions among health states occurred in 2-years cycles for fifteen cycles and switching to other therapies was allowed. Calculations of costs and utilities were established by attachment of decision trees to the overall model. The incremental cost effectiveness ratio (ICER) of cost/quality adjusted life year (QALY) for all available INF β products (brands, biosimilars and CBPs) were considered. Both costs and utilities were discounted. Sensitivity analyses were done to assess robustness of model.

RESULTS

ICER for Avonex, Rebif and Betaferon was 18712, 11832, 15768 US Dollars ($) respectively when utility attained from literature review has been considered. ICER for available CBPs and biosimilars in Iran was $847, $6964 and $11913.

CONCLUSIONS

The Markov pharmacoeconomics model determined that according to suggested threshold for developing countries by world health organization, all brand INF β products are cost effective in Iran except Avonex. The best strategy among INF β therapies is CBP intramuscular INF β-1a (Cinnovex). Results showed that a policy of encouraging accessibility to CBPs and biosimilars could make even high technology products cost-effective in LMICs.