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1.
J Med Internet Res ; 26: e53372, 2024 Feb 09.
Article in English | MEDLINE | ID: mdl-38335016

ABSTRACT

BACKGROUND: Digital technologies have afforded people living with multiple sclerosis (MS) access to telehealth consultations, diagnostic tools, and monitoring. Although health care professionals remain the most trusted source of information, the internet has emerged as a valuable resource for providing MS-related information, particularly during the COVID-19 pandemic. Notably, people living with MS are increasingly seeking educational content for a range of topics related to the self-management of MS; however, web-based information seeking remains largely underevaluated. To address this gap and ensure that web-based health-related information is accessible and engaging, this study used qualitative methods to analyze the reflections from participants of web-based educational programs for people living with MS. OBJECTIVE: This study aimed to explore the motivations, behaviors, and expectations of web-based health information seeking for people living with MS. METHODS: We conducted semistructured interviews for 38 people living with MS 1 month after they completed the novel MS Online Course, which provided information on modifiable lifestyle-related risk factors for people living with MS. Of the 38 participants, 22 (58%) completed the intervention course and 16 (42%) completed the standard care course. Inductive thematic analysis was used within a qualitative paradigm, and 2 authors coded each interview separately and arrived at themes with consensus. RESULTS: We identified 2 themes: motivation to learn and MS information on the web. The diagnosis of MS was described as a pivotal moment for precipitating web-based information seeking. People living with MS sought lifestyle-related information to facilitate self-management and increase control of their MS. Although social media sites and MS websites were considered useful for providing both support and information, discretion was needed to critically appraise information. Recognizable institutions were frequently accessed because of their trustworthiness. CONCLUSIONS: This study provided novel insights into the motivations of people living with MS for seeking web-based health information. Furthermore, their preferences for the content and format of the web-based information accessed and their experiences and reactions to this information were explored. These findings may guide educators, researchers, and clinicians involved in MS care to optimize the engagement and processing of web-based health information seeking by people living with MS.


Subject(s)
Information Seeking Behavior , Multiple Sclerosis , Humans , Multiple Sclerosis/therapy , Pandemics , Health Personnel , Internet
2.
Acta Neurol Belg ; 124(2): 457-466, 2024 Apr.
Article in English | MEDLINE | ID: mdl-37770791

ABSTRACT

BACKGROUND: Relationships between stressful life events (SLEs) and health outcomes in people living with multiple sclerosis (plwMS), beyond relapse, are not well-established. We examined associations between SLEs and fatigue and symptoms of depression in plwMS. METHODS: 948 participants were queried whether they had experienced any of the 16 SLEs (Holmes-Rahe Social Readjustment Rating Scale) in the preceding 12 months. SLEs were summated to estimate SLE number and SLE load (weighted for the degree of associated stress). Cross-sectional associations between SLE (number, load and individual) and fatigue, and depressive symptoms were examined using log-binomial or log-multinomial regression adjusted for age, sex, relapse symptoms, education, MS type at baseline, disability, fatigue, comorbidity, depression, and antidepressant/antifatigue medications, as appropriate. Sub-analyses restricted to SLEs with a negative emotional impact were performed. RESULTS: Median SLE number and load were 2 (IQR 1-2) and 57 (IQR 28-97), respectively. SLE number and load were not associated with a higher prevalence of fatigue, or depressive symptoms, even when restricting analyses to SLEs with a perceived negative emotional impact. A new relationship or family member with a negative impact was associated with a threefold and 2.5-fold higher prevalence of depressive symptoms, respectively. Serious illness was associated with a 28% higher prevalence of depressive symptoms. CONCLUSION: Psychological support for SLEs, and/or intervention targeted to SLE appraisal, may be beneficial in mitigating the adverse effects of SLEs with a perceived negative emotional impact on depressive symptoms in plwMS. Potential associations between serious illness and increased prevalence of depressive symptoms may warrant further investigation.


Subject(s)
Depression , Multiple Sclerosis , Humans , Depression/epidemiology , Depression/etiology , Depression/diagnosis , Life Change Events , Cross-Sectional Studies , Multiple Sclerosis/complications , Multiple Sclerosis/epidemiology , Multiple Sclerosis/psychology , Fatigue/epidemiology , Fatigue/etiology , Recurrence , Stress, Psychological/psychology
3.
BMC Neurol ; 23(1): 249, 2023 Jun 29.
Article in English | MEDLINE | ID: mdl-37386385

ABSTRACT

BACKGROUND: People living with multiple sclerosis (plwMS) seek access to information on evidence-based lifestyle-related risk factors associated with multiple sclerosis (MS). As the internet has made delivery of lifestyle information increasingly accessible and cost-effective, we designed the Multiple Sclerosis Online Course (MSOC) to deliver a multimodal lifestyle modification program for plwMS. Two MS online courses were developed: the intervention course based on lifestyle recommendations of the Overcoming Multiple Sclerosis (OMS) program and the standard-care course representing standard lifestyle recommendations from other MS websites. We examined for feasibility in a pilot randomised controlled trial (RCT), where satisfactory completion and accessibility were achieved across both study arms. From this success, a protocol for a larger RCT was developed to examine the effectiveness of MSOC in improving health-related quality of life (HRQoL) and other health outcomes in plwMS. METHODS/DESIGN: This single-blinded RCT will recruit n = 1,054 plwMS. Participants in the intervention arm will receive access to a MSOC with seven modules providing evidence-based information on the OMS program. Participants in the control group will receive access to a MSOC of identical format, with seven modules providing general MS-related information and lifestyle recommendations sourced from popular MS websites, e.g. MS societies. Participants will complete questionnaires at baseline and at 6, 12, and 30 months after course completion. The primary endpoint is HRQoL, as measured by MSQOL-54 (both physical and mental health domains) at 12 months following course completion. Secondary outcomes are changes to depression, anxiety, fatigue, disability, and self-efficacy as measured by Hospital Anxiety and Depression Scale, Patient-Determined Disease Steps and University of Washington Self-Efficacy Scale, respectively, assessed at each timepoint. Further assessments will include quantitative post-course evaluation, adoption and maintenance of behaviour change from follow-up survey data, and qualitative analysis of participants' outcomes and reasons for course completion or non-completion. DISCUSSION: This RCT aims to determine whether an online intervention course delivering evidence-based lifestyle modification recommendations based on the Overcoming Multiple Sclerosis program to plwMS is more effective at improving HRQoL, and other health outcomes post-intervention, compared with an online standard-care course. TRIAL REGISTRATION: This trial was registered prospectively with the Australian New Zealand Clinical Trials Registry, www.anzctr.org.au , identifier ACTRN12621001605886. DATE OF REGISTRATION: 25 November 2021.


Subject(s)
Life Style , Multiple Sclerosis , Humans , Australia , Quality of Life , Anxiety , Randomized Controlled Trials as Topic
4.
Front Public Health ; 10: 1022185, 2022.
Article in English | MEDLINE | ID: mdl-36568793

ABSTRACT

Background: Modification of lifestyle-related risk factors for multiple sclerosis (MS) has been associated with improved health outcomes when compared with standard medical management alone. Based on an existing lifestyle modification program offered as a residential workshop, the MS Online Course (MSOC) was developed to translate the workshop into an online intervention. We performed a pilot randomized controlled trial (RCT), to assess the feasibility concepts of accessibility, learnability and desirability through quantitative and qualitative analyzes. In the present study, we performed additional qualitative analyzes to explore participants' motivations, expectations, and experiences of the MSOC. This study aims to complement prior feasibility analyzes and inform recruitment strategies and course content redevelopment so that its effectiveness may be assessed by examining behavior change and health outcomes in a future larger RCT. Methods: Participants were recruited via online advertisements and randomized to either: the standard care course, containing material sourced from public facing MS websites; or the intervention course, based on an evidence-based lifestyle modification program for people with MS. Course completers were invited to participate in semi-structured interviews. Within a qualitative paradigm, reflexive thematic analysis of interviews was undertaken. Results: Of 31 eligible participants, 17 completed the MSOC and 14 agreed to be interviewed. Four themes were identified in this analysis: (1) "Wanting to help others" (helping through volunteering, contributing to knowledge base, spreading the word; (2) "Seeking knowledge" (confirmation of existing knowledge; obtaining new knowledge, relevant, credible information); (3) "Doing what I can to help myself" (understanding lifestyle modification, changing my lifestyle, remaining well); and (4) "Changing attitudes" (finding positivity, feeling more confident and in control). Conclusions: Participants were motivated to help others through research, help themselves by improving knowledge and to find ways to better manage their MS. Expectations included obtaining credible, reliable information, to substantiate existing knowledge, and to further understand lifestyle modification. Participants' experiences included confirmation of and obtaining new knowledge, and early implementation of modified lifestyle behaviors. These insights surrounding participants' motivations, expectations and experiences will assist in recruitment strategies, course redevelopment and outcome measures for the future RCT to examine the effectiveness of the MSOC.


Subject(s)
Motivation , Multiple Sclerosis , Humans , Life Style , Behavior Therapy
5.
Digit Health ; 8: 20552076221123713, 2022.
Article in English | MEDLINE | ID: mdl-36081754

ABSTRACT

Objective: To explore the feasibility of a randomised controlled trial of a multiple sclerosis online course (MSOC) via qualitative analysis of participant semi-structured interviews. Methods: The MSOC was developed in two arms: intervention arm which contained evidence-based lifestyle modification recommendations, and standard-care arm which delivered information from MS websites reflecting standard advice. Participants were recruited via online advertisements, completed a baseline questionnaire, and randomised. Seven modules were delivered over six weeks. Course completers were invited to participate in semi-structured interviews. Within a qualitative paradigm, interviews were analysed using reflexive thematic analysis. Results: Fourteen of the 17 course completers were interviewed: 86% (12/14) female; mean age 50 years; residing in Australia, New Zealand, and the USA, predominantly had relapsing-remitting MS, mean time from diagnosis 9.5 years, and patient-determined disease steps disability assessment distributed evenly across all three categories. Four themes were identified: 1) "Hearing our stories" (hope for the future, feeling represented, exploring the journey of others with MS, learning from diversity, and wanting to connect with others); 2) "Taking the plunge" (not wanting to be first, feelings of nervousness or reluctance and feeling confronted); 3) "The accessibility and safety of being online" (ease of access, going at your own pace, making it work and not letting others down); and 4) "unpacking the course" (ease of navigation, visuals, understandability, and length and timing). Conclusion: Participants felt represented, found the course accessible and content was easy to understand. These experiences provide important insights and considerations for this digital health intervention.

6.
Front Public Health ; 10: 852214, 2022.
Article in English | MEDLINE | ID: mdl-35570898

ABSTRACT

Background: Modifiable lifestyle factors are important to aid people with multiple sclerosis in the self-management of their disease. Current self-management programs are limited by their face-to-face mode of delivery but there is immense potential with the internet to deliver these programs effectively. Objective: The aims of this study are to assess the feasibility of a digitalized educational lifestyle self-management program for people with MS. Methods: In this randomized controlled trial, people with MS were randomly allocated to participate in a 6-week tailored web-based educational lifestyle program or 6-week generic standard-care educational course, and were blinded to their allocation. Participants were recruited through multiple sclerosis (MS) Societies in four countries: Australia, New Zealand, Canada, and the United States. The primary outcome was to assess acceptability of the program defined as percentage completion of all modules at 6-weeks post-course commencement. Secondary outcomes included evaluating participant responses to the follow-up survey across three domains: accessibility, learnability, and desirability. Results: Thirty-five participants from Australia, Canada, New Zealand, and the US completed the baseline survey and were randomized. Four participants were deemed ineligible due to incomplete baseline data; therefore, nine out of 15 and eight out of 16 participants completed 100% of the course in the intervention and standard-care arm courses, respectively. Conclusions: This study found that this web-based educational lifestyle program is a feasible means of delivering educational content to people with MS via the internet according to our a priori targets of >40% of participants in the intervention arm, and >25% in the control arm to completing 100% of the course. It is therefore appropriate to evaluate this intervention further in a large, randomized controlled trial. Trial registration: This study was prospectively registered with the Australian New Zealand Clinical Trials Registry (ID: ACTRN12621000245897).


Subject(s)
Multiple Sclerosis , Australia , Feasibility Studies , Humans , Internet , Life Style , Multiple Sclerosis/therapy
7.
J Med Internet Res ; 24(2): e27735, 2022 02 09.
Article in English | MEDLINE | ID: mdl-35138262

ABSTRACT

BACKGROUND: Digital health interventions have revolutionized multiple sclerosis (MS) care by supporting people with MS to better self-manage their disease. It is now understood that the technological elements that comprise this category of digital health interventions can influence participant engagement in self-management programs, and people with MS can experience significant barriers, influenced by these elements, to remaining engaged during a period of learning. It is essential to explore the influence of technological elements in mitigating attrition. OBJECTIVE: This study aimed to examine the study design and technological elements of documented digital health interventions targeted at people with MS-digital health interventions that were intended to support a program of engagement over a defined period-and to explore how these correlated with attrition among participants of randomized controlled trials (RCTs). METHODS: We conducted a systematic review and meta-analysis of RCTs (n=32) describing digital health self-management interventions for people with MS. We analyzed attrition in included studies, using a random-effects model and meta-regression to measure the association between potential moderators. RESULTS: There were no measured differences in attrition between the intervention and control arms; however, some of the heterogeneity observed was explained by the composite technological element score. The pooled attrition rates for the intervention and control arms were 14.7% and 15.6%, respectively. CONCLUSIONS: This paper provides insight into the technological composition of digital health interventions designed for people with MS and describes the degree of attrition in both study arms. This paper will aid in the design of future studies in this area, particularly for digital health interventions of this type.


Subject(s)
Multiple Sclerosis , Self-Management , Humans , Multiple Sclerosis/therapy , Randomized Controlled Trials as Topic
8.
Eur J Neurol ; 28(9): 2952-2964, 2021 09.
Article in English | MEDLINE | ID: mdl-34081818

ABSTRACT

BACKGROUND AND PURPOSE: Several modifiable lifestyle factors have been associated with the onset and health outcomes of multiple sclerosis (MS), including clinically significant fatigue. A combined lifestyle score approach represents one method of assessing their relationship with clinical outcomes. The aim was to examine the association of two lifestyle scores with clinically significant fatigue and change thereof over 2.5 years' follow-up using inverse probability treatment weighting (IPTW). METHODS: Data on sociodemographic, lifestyle, and clinical characteristics surveyed from an international cohort of people with MS at baseline and at 2.5-year follow-up were used. Fatigue was defined by the Fatigue Severity Scale (FSS >5) and healthy lifestyle by the Healthy Lifestyle Index Score (HLIS) and the Smoking, Nutrition, Alcohol Consumption and Physical Activity (SNAP) score. Analyses were by IPTW accounting for age, sex, MS type, disability, treated comorbidity number, immunomodulatory medication use, prescription antifatigue medication use, and ongoing relapse symptoms. RESULTS: In total, 1268 participants completed the FSS at both time points; approximately 62% had fatigue. Using doubly robust IPTW, high (>11/20) HLIS (odds ratio [OR] 0.90, 95% confidence interval [CI] 0.81-0.98) and high (>3/5) SNAP (OR 0.82, 95% CI 0.73-0.90) were each associated with lower risk of fatigue at follow-up. Evaluating change in fatigue, a higher SNAP score was associated with a lower risk of fatigue (OR 0.89, 95% CI 0.80-0.97) but the score for HLIS did not reach statistical significance (OR 0.93, 95% CI 0.85-1.01). CONCLUSION: These results suggest a robust role for key lifestyle factors in preventing clinically significant fatigue and may represent a place for lifestyle modification in improving clinical outcomes in MS.


Subject(s)
Multiple Sclerosis , Fatigue/epidemiology , Fatigue/etiology , Healthy Lifestyle , Humans , Life Style , Multiple Sclerosis/complications , Multiple Sclerosis/epidemiology , Probability
9.
Article in English | MEDLINE | ID: mdl-33374429

ABSTRACT

People with multiple sclerosis (PwMS) often experience uncertainty and fear about their futures. Partners of PwMS may share their concerns and experience fears about their own futures, limitations on their lives, ability to work, and becoming a carer. For PwMS, modification of lifestyle-related risk factors has been associated with improved health outcomes. For PwMS who attended residential lifestyle modification workshops (RLMW), sustained improved health outcomes have been demonstrated. Whether improved outcomes for PwMS who engage with lifestyle modification translate to improved partner perceptions of the future, is yet to be explored. We explored the perspectives of partners of PwMS who had attended a RLMW and the impact that the person with MS's illness and their engagement with lifestyle modification had on their partners' views of the future. Analysis of 21 semi-structured interviews used a methodology informed by Heidegger's Interpretive Phenomenology. Three themes emerged: 'uncertainty', 'planning for the future' and 'control, empowerment and confidence'. Subthemes included MS and lifestyle modification being a catalyst for positive change; developing a sense of control and empowerment; and hope, optimism and positivity. Lifestyle modification may provide benefits, not only to PwMS, but also to their partners, and should be considered part of mainstream management of MS.


Subject(s)
Caregivers/psychology , Life Style , Multiple Sclerosis , Psychiatric Rehabilitation , Adult , Aged , Behavior Therapy , Empowerment , Female , Forecasting , Hope , Humans , Male , Middle Aged , Multiple Sclerosis/therapy , Optimism , Patient Education as Topic , Young Adult
10.
Inform Health Soc Care ; 45(4): 374-384, 2020 Oct 01.
Article in English | MEDLINE | ID: mdl-32508186

ABSTRACT

We aimed to describe website traffic and qualitatively analyze an e-health community discussion forum. Participants in this study were people affected by multiple sclerosis visiting the Overcoming Multiple Sclerosis (OMS) website. This mixed methods study combined descriptive analysis of website traffic over 7 years and 1 month, and qualitative analysis of 1 week of posts in the meditation topic, coded into theme groups using qualitative thematic analysis. There were 166 meditation topics posted with 21,530 initial views of primary post and 785 sub-post responses. Meditation posts and sub-posts received 368,713 replies. Number of views increased from 4,684 in 2011 to over 80,000 in 2017, a considerably greater rate of increase than overall traffic. Qualitative analysis of posts on the meditation forum identified themes of barriers and enablers to utilization of meditation resources. Enablement themes dominated, observed across six of the seven theme groups with various forms of positive social and emotional support to learn and practice meditation. One theme, negative emotion, was identified as a barrier. The OMS peer-to-peer patient online discussion forum serves important functions in encouraging, educating and enabling its growing online community. Our analysis may help improve and innovate online support for lifestyle management in many chronic diseases.


Subject(s)
Meditation , Multiple Sclerosis , Chronic Disease , Humans , Multiple Sclerosis/therapy
11.
Health Soc Care Community ; 27(6): 1515-1524, 2019 11.
Article in English | MEDLINE | ID: mdl-31368624

ABSTRACT

Multiple sclerosis (MS) has a major impact on the relationship of couples living with the illness. Although some positives of dealing with MS as a couple have been identified, MS has been associated with higher rates of relationship breakdown and worse Quality of Life (QOL) for both people in the relationship, especially if the person with MS experiences a decline in mental or physical health or develops disability. Modification of lifestyle-related risk factors has been associated with improved outcomes for people with MS, including physical and mental health-related QOL, and these improved outcomes may lead to improved experiences for their partners. We aimed to explore the perspectives and experiences of the partners of people with MS, when the people with MS had undertaken an intensive residential workshop regarding healthy lifestyle, to understand the impact of MS and lifestyle modification on these partners' experiences of their relationship. Within the framework of Heidegger's interpretive phenomenology, semi-structured interviews were thematically analysed. Participants were in a spousal relationship with people with MS who had attended an intensive residential workshop regarding modification of lifestyle-related risk factors between 2002 and 2016. Participants lived in Australia, New Zealand, the United Kingdom and Europe. Three major themes were identified relating to the couple's relationships: providing support, remaining connected and togetherness. Aspects of these themes, not commonly previously reported, included the personal and relationship benefits experienced from providing support with lifestyle modification, improved communication, and the resultant greater sense of closeness. These experiences of partners of people with MS improve our understanding of both the complexities of living with MS and adopting lifestyle modification, and suggest some potential benefits to relationships.


Subject(s)
Home Nursing/psychology , Life Style , Multiple Sclerosis/psychology , Quality of Life/psychology , Spouses/psychology , Activities of Daily Living/psychology , Adaptation, Psychological , Adult , Australia , Europe , Female , Humans , Male , Middle Aged , New Zealand , United Kingdom
12.
Mult Scler Relat Disord ; 30: 25-32, 2019 May.
Article in English | MEDLINE | ID: mdl-30731236

ABSTRACT

BACKGROUND: Differential treatment allocation may impact on clinical phenotype in MS and in turn upon quality of life (QoL). OBJECTIVES: (a) Investigate the association between disease-modifying drugs (DMDs) use and relapse frequency, disability, clinically significant fatigue, and physical and mental health-related QoL among participants with MS residing in Australia and New Zealand (NZ); (b) assess whether these associations differed between Australia and NZ. METHODS: Disability and fatigue were measured by PDDS and FSS, respectively. QoL was assessed by MSQOL-54. Associations were assessed by binomial and multinomial logistic regression, as appropriate. Multivariable models were adjusted for demographic and clinical covariates, as appropriate. RESULTS: 837 participants (627 from Australia; 210 from NZ) were identified from an online cohort of people with MS. First- and second-generation DMD use was associated with higher adjusted-odds of fatigue and disability, though not with 12-month relapse number. DMD use was not independently associated with physical or mental QoL. The association of first-generation DMD use with moderate disability differed between nations, such that treatment was associated with lower odds in Australia but not in NZ; a similar but a small difference was found for severe disability. No differences were seen in the DMD association with relapse number, nor with fatigue or QoL, between Australia and NZ. CONCLUSION: The differential treatment allocation associations in NZ are evident in the DMD-disability association, but there is no evidence that this treatment regimen has negative associations with fatigue, mood, or QoL.


Subject(s)
Affect/physiology , Disease Progression , Fatigue/physiopathology , Immunologic Factors/therapeutic use , Multiple Sclerosis/drug therapy , Multiple Sclerosis/physiopathology , Quality of Life , Severity of Illness Index , Treatment Outcome , Adult , Australia , Fatigue/etiology , Female , Humans , Male , Middle Aged , Multiple Sclerosis/complications , New Zealand
13.
Mult Scler Relat Disord ; 30: 165-175, 2019 May.
Article in English | MEDLINE | ID: mdl-30785073

ABSTRACT

BACKGROUND: Depression is highly prevalent among people with MS, and determinants thereof would be useful. OBJECTIVES: We examined the relationship of demographic and clinical factors with positive depression-screen and change in depression over 2.5 years in people with MS. METHODS: Positive depression-screen assessed by Patient Health Questionnaire (PHQ)-2 and PHQ-9. Associations of demographic and clinical factors with depression-screen and change thereof assessed using multivariable regression models, adjusted for age, sex, disability, fatigue, antidepressant use, and baseline PHQ-2, as appropriate. RESULTS: Overweight/obese BMI, comorbidity number, fatigue, and disability were associated with positive depression-screen, while married/partnered state, being employed, higher perceived socioeconomic status, and greater education were inversely associated with depression-screen. After adjustment, only marital status, socioeconomic status, antidepressant medication use, and fatigue were associated with risk of newly positive depression-screen. MS type, relapse number and immunomodulatory medication use were not associated with depression-screen after controlling for disability and fatigue. CONCLUSION: In a large prospective cohort study of depression in people with MS, we substantiated several potential determinants of a positive depression-screen and depression trajectory, particularly fatigue. Given that fatigue is the most common and most significant clinical symptom for people with MS, efforts to reduce fatigue may have follow-on benefits for reducing depression.


Subject(s)
Demography/methods , Depression/epidemiology , Multiple Sclerosis/epidemiology , Adolescent , Adult , Age Distribution , Aged , Aged, 80 and over , Antidepressive Agents/therapeutic use , Cohort Studies , Depression/diagnosis , Depression/drug therapy , Disability Evaluation , Fatigue/epidemiology , Female , Humans , International Cooperation , Male , Marital Status , Middle Aged , Multiple Sclerosis/psychology , Psychiatric Status Rating Scales , Quality of Life , Surveys and Questionnaires , Young Adult
14.
Front Neurol ; 9: 1074, 2018.
Article in English | MEDLINE | ID: mdl-30619037

ABSTRACT

Objective: To report the methodology and summary data of the Health Outcomes and Lifestyle In a Sample of people with Multiple sclerosis (HOLISM) longitudinal and validation cohorts. We report (1) data on participation, socio-demographics, disease characteristics, medication use, modifiable lifestyle risk factor exposures, and health outcomes of the HOLISM longitudinal cohort 2.5-years post enrolment; (2) attrition at this 2.5-year wave; and (3) baseline characteristics of the associated HOLISM validation cohort. Methods: The HOLISM longitudinal study recruited people internationally with self-reported diagnosed multiple sclerosis (MS) through web 2.0 platforms and MS society newsletters. Participants, first recruited in 2012, were invited 2.5-years later to participate in a follow-up survey. At both time points, participants completed a comprehensive online questionnaire of socio-demographics, modifiable lifestyle exposures, and health outcomes using validated and researcher-designed tools. The same methodology was used to recruit a new sample: the HOLISM validation cohort. Characteristics were explored using summary measures. Results: Of 2,466 people with MS at baseline, 1,401 (56.8%) provided data at 2.5-year follow-up. Attrition was high, likely due to limited amount of contact information collected at baseline. Completion of the 2.5-year wave was associated with healthier lifestyle, and better health outcomes. Participants completing follow-up had diverse geographical location, were predominantly female, married, unemployed or retired. At 2.5-year follow-up, nearly 40% were overweight or obese, most were physically active, non-smokers, consumed little alcohol, used vitamin D/omega-3 supplements, and 42% reported current disease-modifying drug use. Thirty percentage of reported cane or gait disability, while 13% relied on major mobility supports (Patient Determined Disease Steps). Approximately half the respondents reported a comorbidity, 63% screened positive for clinically significant fatigue (Fatigue Severity Scale), and 22% screened positive for depression (Patient Health Questionnaire-9). The validation cohort's characteristics were mostly consistent with previously reported HOLISM baseline data. Conclusions: Exploring prospective associations of modifiable environmental/behavioral risk factors with health outcomes in this international longitudinal sample of people with MS will be beneficial to MS research. Impacts of attrition and selection bias will require consideration. The validation cohort provides opportunity for replication of previous findings, and also for temporal validation of predictive models derived from the HOLISM cohort.

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