Efficacy of a Work Disability Prevention Program for People with Rheumatic and Musculoskeletal Conditions: A Single-Blind Parallel-Arm Randomized Controlled Trial

Including 'Work as a Treatment Goal' in the Care for Patients with Chronic Diseases : The Development of a Generic Care Model-A Descriptive Study

BACKGROUND

The Netherlands faces 60% prevalence of chronic conditions by 2040, impacting societal participation and quality of life. Current clinical care inadequately addresses these consequences, and most hospitals do not integrate occupational health in their care.

OBJECTIVES

To develop a generic person- and work-oriented medical care model (WMCM) based on real life experiences with work-oriented care and supporting the chronically ill in active societal participation.

METHODS

A qualitative research project with a participative approach in one hospital (November 2019 until March 2020). In an expert meeting, a schematic representation of a work-oriented care model was developed. Subsequent discussion rounds, with professionals from different patient groups, iteratively refined the model to a WMCM.

RESULTS

Consensus was reached after seven rounds of discussion, defining the model's core elements (1) a combination of biomedical and biopsychosocial approaches, (2) involvement of a clinical occupational physician in the treatment team, (3) a coordinating role for nursing specialists, and (4) incorporation of a work-oriented intervention plan (WoIP) into the treatment plan. Advocating early attention to societal participation, the model emphasises the WoIP and consensus on monitoring indicators. The final goal is a sustainable return to societal participation, considering both quality of life and work.

CONCLUSION

It is feasible to develop a generic person- and work-oriented care model for patients with chronic illness within a hospital care setting. Collaboration between healthcare professionals and a specialised occupational physician, with a central role for nurses, is deemed crucial.

Development of a Multimodal, Physiotherapist-Led, Vocational Intervention for People with Inflammatory Arthritis and Reduced Work Ability: A Mixed-Methods Design Study

PURPOSE

Work ability of people with rheumatoid arthritis (RA) and axial spondyloarthritis (axSpA) is reduced, but underexamined as a clinical treatment target. The evidence on vocational interventions indicates that delivery by a single healthcare professional (HCP) may be beneficial. Physiotherapist (PT)-led interventions have potential because PTs are most commonly consulted by RA/axSpA patients in the Netherlands. The aim was to develop a PT-led, vocational intervention for people with RA/axSpA and reduced work ability.

METHODS

Mixed-methods design based on the Medical Research Council (MRC) framework for developing and evaluating complex interventions, combining a rapid literature review and six group meetings with: patient representatives (n = 6 and 10), PTs (n = 12), (occupational) HCPs (n = 9), researchers (n = 6) and a feasibility test in patients (n = 4) and PTs (n = 4).

RESULTS

An intervention was developed and evaluated. Patient representatives emphasized the importance of PTs' expertise in rheumatic diseases and work ability. The potential for PTs to support patients was confirmed by PTs and HCPs. The feasibility test confirmed adequate feasibility and underlined necessity of training PTs in delivery. The final intervention comprised work-focussed modalities integrated into conventional PT treatment (10-21 sessions over 12 months), including a personalized work-roadmap to guide patients to other professionals, exercise therapy, patient education and optional modalities.

CONCLUSION

A mixed-methods design with stakeholder involvement produced a PT-led, vocational intervention for people with RA/axSpA and reduced work ability, tested for feasibility and ready for effectiveness evaluation.

The Work Experience Survey - Rheumatic conditions (United Kingdom): Psychometric properties and identifying the workplace barriers of employed people with inflammatory arthritis receiving vocational rehabilitation

OBJECTIVE

The aims were to: revise the Work Experience Survey-Rheumatic Conditions (WES-RC- UK), a work assessment listing 142 workplace barriers; investigate content validity, reliability, and concurrent validity; update the accompanying WES-RC and WORKWELL Solutions Manuals; and investigate workplace barriers of people with inflammatory arthritis.

METHODS

Rheumatology therapists, following vocational rehabilitation (VR) training, assessed participants in the WORKWELL VR trial using the WES-RC. Data were extracted from the WES-RC to identify the frequency of workplace barriers, and from trial baseline questionnaires (e.g., Work Limitations Questionnaire-25 (WLQ-25). Barriers reported by ≤5 participants were considered for removal. WES-RC content validity was assessed by linking to the International Classification of Functioning, Health, and Disability Core Set for VR (ICF-VR). Reliability was assessed using Cronbach's α and concurrent validity by correlating the total number of workplace barriers reported with WLQ-25 scores.

RESULTS

WES-RCs were completed with 116 employed participants: 79% women, age 48.72 (SD 9.49) years, and 57% working full-time. The WES-RC was reduced to 121 barriers. Content validity was good, with 73/90 ICF-VR items linked. Cronbach's α = 0.92, that is, suitable for individual use. Concurrent validity was moderate: WLQ-25 (rs  = 0.40). The three most common barriers were Physical Job Demands (100%: e.g., mobility 99%; hand use 74%), Mental, Time, Energy, Emotional Job Demands (91%, e.g., concentration 47%, remembering 41%); Getting Ready for and Travel to Work (87%, e.g., driving 60%).

CONCLUSION

The WES-RC (UK) has good content validity, reliability, and concurrent validity. The wide range of barriers emphasises the need for biopsychosocial work rehabilitation.

Effectiveness and cost-effectiveness of a multimodal, physiotherapist-led, vocational intervention in people with inflammatory arthritis: study protocol of the Physiotherapy WORKs trial

BACKGROUND

Although reduced work ability is a substantial problem among people with inflammatory arthritis (IA), work ability is an underexposed area in clinical practice. Evidence on vocational interventions in IA is limited, but favourable results of delivery by a physiotherapist (PT) warrant the need for further research. Therefore, we aim to evaluate the (cost-)effectiveness of a multimodal, PT-led, vocational intervention in (self-)employed people with IA compared to usual care.

METHODS

This randomized controlled trial will include 140 people with rheumatoid arthritis (RA) or axial spondyloarthritis (axSpA) who are (self-)employed and have reduced work ability (Work Ability Index - Single Item Scale (WAS) ≤ 7/10) and/or RA/axSpA related sick leave (≤ 6 months). Participants will be randomized 1:1 to the intervention or control condition (usual care). The intervention, delivered by primary care PTs, will be personalized to each patient, consisting of 10 to 21 sessions over 12 months. The intervention will be multimodal, comprising of 1) exercise therapy and a physical activity plan, 2) education/self-management support, 3) work-roadmap to guide participants in finding relevant other care, with optionally 4) online self-management course and 5) workplace examination. Assessments will be performed at baseline and after 3, 6, and 12 months. The primary outcome measure of effectiveness is work ability, as measured with the WAS at 12 months. For the cost-effectiveness analysis, the EuroQol (EQ-5D-5L), self-reported healthcare use, sick leave and productivity while at work will be used to estimate the trial based cost-utility from a societal perspective. A process evaluation, including assessments of adherence and treatment fidelity, will be undertaken using the registrations of the PTs and semi-structured interviews at 12 months follow-up in a random sample of the intervention group.

DISCUSSION

The results of this study will provide insights in the (cost-)effectiveness of a multimodal, PT-led, vocational intervention in people with IA and a reduced work ability.

TRIAL REGISTRATION

This study is registered in the International Clinical Trial Registry Platform (ICTRP) under number NL9343.

Testing the feasibility and acceptability of an online 'Fatigue and Activity Management Education for Work (FAME-W) programme' for individuals with inflammatory arthritis

INTRODUCTION

Fatigue and Activity Management Education for Work (FAME-W) is a four-week, occupational therapy led programme focussing on fatigue management strategies. FAME-W was designed to be delivered in person; however, due to COVID-19 pandemic it was modified to be an online group-based self-management intervention. The purpose of this study was to test the feasibility and acceptability of the online delivery format of FAME-W.

METHODS

This was a mixed methods study. Participants were randomly allocated to intervention or control group. Participants in the intervention group received a four-week online FAME-W. The control group participants received a FAME-W handbook. Participants were required to complete questionnaires on work presenteeism, fatigue, mood, Health Related Quality of Life and pain at baseline, and 3 months post-intervention. Participants in the intervention group attended a focus group immediately following the completion of the programme and the control group participated in individual interviews.

RESULTS

Seven of ten individuals recruited participated in the study. Majority of participants had Rheumatoid Arthritis and were working full-time. The mean age of intervention participants was 53 ± 10.4 and 56.5 ± 3.7 for the controls. All participants in the intervention group had 100% attendance, completed all study measures and activities. Participants had positive comments about the programme format, content, and delivery. Improvements were observed in most measures at follow up.

CONCLUSION

Results suggest that an online programme to improve work ability was feasible and acceptable to individuals with inflammatory arthritis. The online delivery format was favoured over attending a centre-based programme. The findings support a definitive intervention trial of online FAME-W.

Association of vocational interventions and work-related factors with disease and work outcomes in people with RMDs: A systematic review

OBJECTIVE

A EULAR taskforce was convened to develop recommendations for lifestyle behaviours amongst people with rheumatic and musculoskeletal diseases (RMDs). This paper reviews the literature on work-related factors and disease-specific outcomes for people with osteoarthritis, rheumatoid arthritis (RA), systemic lupus erythematosus, axial spondyloarthritis (axSpA), psoriatic arthritis, systemic sclerosis (SSc) and gout.

METHODS

Two separate systematic literature reviews (SLRs) were conducted. The first identified SLRs, published between 01/2013 and 09/2018. The second identified original observational and intervention studies published before 05/2019. Manuscripts were included if they assessed the effects of vocational interventions on disease-specific outcomes (i.e. clinical outcomes, patient-reported outcomes, and work outcomes) or if they assessed the association between work-related factors and these outcomes. Medline, Embase, Cochrane Library of systematic reviews and CENTRAL databases were searched.

RESULTS

Two SLRs were identified including individuals with SSc and inflammatory arthritis. Subsequently, 23 original manuscripts were identified, with most of them (43.5%) including people with RA and no manuscripts on gout. Most observational studies evaluated the association between work-related factors and work outcomes while limited information was available on the impact of work on clinical outcomes. A few studies suggested that physically demanding jobs have a small detrimental effect on radiographic progression in axSpA and PsA. Intervention studies showed beneficial effects of vocational interventions for disease-specific outcomes, but with small effect sizes.

CONCLUSION

Many studies indicated that work participation is not likely to be detrimental and, in some cases, may be beneficial for RMD-specific outcomes and should therefore receive attention within healthcare consultations.

Non-pharmacological interventions to promote work participation in people with rheumatic and musculoskeletal diseases: a systematic review and meta-analysis from the EULAR taskforce on healthy and sustainable work participation

OBJECTIVE

To summarise the evidence on effectiveness of non-pharmacological (ie, non-drug, non-surgical) interventions on work participation (sick leave, work status and presenteeism) in people with rheumatic and musculoskeletal diseases (RMDs).

METHODS

A systematic review of randomised controlled trials (RCTs) and longitudinal observational studies (LOS) was performed. Qualitative (RCTs/LOS) and quantitative (RCTs) evidence syntheses were conducted. Mixed-effects restricted maximum likelihood models were used to combine effect estimates, using standardised mean differences (SMDs) as the summary measure for each outcome domain separately, with a negative SMD favouring the intervention over comparator. Subgroup analyses were performed for type of RMD, risk status at baseline regarding adverse work outcomes and intervention characteristics.

RESULTS

Of 10 153 records, 64 studies (37 RCTs and 27 LOS; corresponding to k=71 treatment comparisons) were included. Interventions were mostly conducted in clinical settings (44 of 71, 62%). Qualitative synthesis suggested clear beneficial effects of 7 of 64 (11%) interventions for sick leave, 1 of 18 (6%) for work status and 1 of 17 (6%) for presenteeism. Quantitative synthesis (37 RCTs; k=43 treatment comparisons) suggested statistically significant but only small clinical effects on each outcome (SMD_{sick leave} (95% CI)=-0.23 (-0.33 to -0.13; k=42); SMD_{work status}=-0.38 (-0.63 to -0.12; k=9); SMD_presenteeism=-0.25 (-0.39 to -0.12; k=13)).

CONCLUSION

In people with RMDs, empirical evidence shows that non-pharmacological interventions have small effects on work participation. Effectiveness depends on contextual factors such as disease, population risk status, intervention characteristics and outcome of interest, highlighting the importance of tailoring interventions.

Measuring, Analyzing, and Presenting Work Productivity Loss in Randomized Controlled Trials: A Scoping Review

OBJECTIVES

This study aimed to conduct a scoping review of randomized controlled trials (RCTs) and investigate which work productivity loss outcomes were measured in these RCTs, how each outcome was measured and analyzed, and how the results for each outcome were presented.

METHODS

A systematic search was conducted from January 2010 to April 2020 from 2 databases: PubMed and Cochrane Central Register of Controlled Trials. Data on country, study population, disease focus, sample size, work productivity loss outcomes measured (absenteeism, presenteeism, employment status changes), and methods used to measure, report, and analyze each work productivity loss outcome were extracted and analyzed.

RESULTS

We found 435 studies measuring absenteeism or presenteeism, of which 155 studies (35.6%) measured both absenteeism and presenteeism and were included in our final review. Only 9 studies also measured employment status changes. The most used questionnaire was the Work Productivity and Activity Impairment Questionnaire. The analysis of absenteeism and presenteeism data was mostly done using regression models (n = 98, n = 98, respectively) for which a normal distribution was assumed (n = 77, n = 89, respectively). Absenteeism results were most often presented in time whereas presenteeism was commonly presented using a percent scale or score.

CONCLUSIONS

There is a lack of consensus on how to measure, analyze, and present work productivity loss outcomes in RCTs published in the past 10 years. The diversity of measurement, analysis, and presentation methods used in RCTs may make comparability challenging. There is a need for guidelines providing recommendations to standardize the comprehensiveness and the appropriateness of methods used to measure, analyze, and report work productivity loss in RCTs.

Self-reported competence level of occupational health care professionals in work ability risk management and analysis

BACKGROUND

The management and analysis of work ability risks is important to support well-being at work and requires multidimensional competence. Competence evaluation in Occupational Health Care professionals' (OHCP) practice is essential for their professional development and promotion of quality of care.

OBJECTIVE

To describe OHCPs' self-reported competence level to manage and analyze work ability risks.

METHODS

A descriptive, cross-sectional study design was applied. The data were collected electronically from May to June 2018 using the Comp-WARMA instrument (scale 1 = poor - 4 = excellent) from Occupational Health Care professionals working in Finnish private medical centers (n = 169, response rate of 10%). The data were analyzed statistically.

RESULTS

The levels of knowledge and skills of OHCP in work ability risk management and analysis were mainly at good level (3.22 on average), but some deficient were still identified. The knowledge and skills of the work ability risk management and analysis were associated with the number of customer organizations they worked with, their attendance of supplementary training regarding work ability risk management and analysis, their amount of work experience, their type of employment, age, and gender.

CONCLUSION

OHCP self-reported competence levels in work ability risk management and analysis was at good level. There is a need for development in all areas of work ability risk management and analysis. OHCP could benefit from in-service education on work ability risk management and analysis. Further validation of the Comp-WARMA instrument in larger sample is needed.

Work-related support in clinical care for patients with a chronic disease: development of an intervention

BACKGROUND

Patients with a chronic disease are more vulnerable in the labor market, and work-related support in clinical care would enhance the timely support greatly needed in each phase of their working life. This paper describes the development of a generic stay-at-work intervention to provide work-related support in clinical care to patients with a chronic disease.

METHODS

Steps 1-4 of Intervention Mapping (IM) were combined with action research principles. A needs assessment (Step 1) involved the project group formation, a literature review, qualitative studies with healthcare professionals (HCPs; n = 9) and patients (n = 10), consultation with financial staff and testing, and resulted in objectives (Step 2). Guided by methods and applications (Step 3), the intervention was developed, tested and finalized (Step 4).

RESULTS

The needs assessment revealed the importance of behavioral change in HCPs, including changing attitude, self-efficacy, and social influence. For that purpose, a pathway and training sessions were developed. Testing these unveiled the need for practical tools and intervision. The final intervention comprises a care pathway as part of working routines, including screening, risk stratification, and tailored support. Practical tools, training sessions, and intervision for HCPs were developed.

CONCLUSIONS

Combining IM with action research principles resulted in a generic stay-at-work intervention in clinical care via behavioral change in HCPs. A generic care pathway, practical tools, training sessions, and intervision were developed. More specific alignment to specific patient groups is possible. To implement the intervention in another hospital, the local context, (financial) resources, and the national legislation should be considered.

The Workwell trial: protocol for the process evaluation of a randomised controlled trial of job retention vocational rehabilitation for employed people with inflammatory arthritis

Background

The Workwell trial is a multi-centre randomised controlled trial with the aims of evaluating the effectiveness and cost-effectiveness of job retention vocational rehabilitation for employed people with inflammatory arthritis, who are experiencing work difficulties due to their arthritis. Vocational rehabilitation is delivered by health service occupational therapists, who have received additional training in providing this Workwell intervention. A process evaluation will be undertaken alongside the main trial to investigate implementation fidelity; understand key stakeholders’ perspectives of the intervention and the social and structural context in which the intervention is provided; and explore issues related to future implementation in clinical practice. This protocol describes the aims, objectives, and methodology of the Workwell trial process evaluation.

Methods

This mixed methods process evaluation will follow the Medical Research Council’s Guidance on process evaluations for complex interventions. It will be underpinned by the conceptual framework for implementation fidelity (CFIF) and normalisation process theory (NPT). We will analyse treatment records, work assessments, and treatment notes to ascertain implementation fidelity. Semi-structured interviews with trial participants, their employer/line managers, treating therapists, and their therapy service managers will be undertaken to explore perceptions of the intervention, contextual factors, and potential for future implementation in practice. Interview topic guides will be informed by NPT. Therapists’ views about Workwell training will be explored via questionnaires following training, and interviews and focus groups following treatment delivery to inform future implementation. Quantitative data will be analysed descriptively. Qualitative data will be analysed using thematic analysis. NPT will guide data analysis and interpretation. Findings from the different elements of this embedded design process evaluation will be reported separately and then the elements integrated. The process evaluation data will be analysed independently of the Workwell trial outcome evaluation. The process evaluation data will then be reviewed in the light of the trial findings.

Discussion

Few trials of job retention vocational rehabilitation in arthritis have included process evaluations. This process evaluation will assist in understanding factors influencing trial outcomes and identifying potential contextual barriers and facilitators for the potential implementation of Workwell vocational rehabilitation into clinical services.

Trial registration

ClinicalTrials.gov NCT03942783. Registered on 08 May 2019. ISRCTN Registry ISRCTN61762297. Registered on 13 May 2019. Retrospectively registered.

Effectiveness of ergonomic interventions on work activity limitations in adults with rheumatoid arthritis: A systematic review

BACKGROUND: Rheumatoid arthritis (RA) is one of the leading causes of work disability in the United States. Ergonomic interventions offer an individualized treatment approach, and when used in conjunction with pharmacological treatment interventions, may improve work outcomes and improve the overall quality of life for individuals with RA. OBJECTIVE: To identify the current body of evidence regarding the effectiveness of ergonomic interventions in reducing work activity limitations in adults with RA. METHODS: A systematic review was conducted to identify articles of ergonomic interventions targeting working adults with RA. The CONsolidated Standards of Reporting Trials (CONSORT) checklist and Non-Pharmacological Treatment (NPT) Extension evaluated the reporting quality of each randomized controlled trial (RCT), and the Grading of Recommendation Assessment, Development, and Evaluation (GRADE) evaluated the quality of the evidence. RESULTS: Six studies were identified and reviewed for the quality of their reporting on evidence related to work activity limitations. Sixty-six percent of the items on the CONSORT checklist were fully reported by all studies and analysis through the GRADE framework demonstrated moderate confidence that the reported effects of ergonomic interventions on work activity limitations in the studies are accurate. This review revealed varied results for the effectiveness of ergonomic interventions on work activity limitations and at-work productivity. CONCLUSION: The results of this review indicate a need for further investigation. Future studies should focus on reviewing specific ergonomic interventions to determine the dosage needed to see results in reducing work activity limitations for working adults with RA.

'You don't want to be seen as a burden' experiences of working with early inflammatory arthritis: a qualitative study

PURPOSE

To describe the impact of early inflammatory arthritis on work participation.

MATERIALS AND METHODS

Thirty individuals (24 women) of working age (age 18-69 years) with inflammatory arthritis (<2 years duration) who were in paid employment or fulltime education were interviewed using qualitative description methodology. Data was analysed using thematic analysis.

RESULTS

Half of participants (n = 15) reported work disability within the first two-years of diagnosis. Five descriptive themes were identified that explained the early impact of IA on participation in paid employment. These themes were: (i) altered capacity for work; (ii) work comes first; (iii) the invisible burden; (iv) the disclosure effect; and (v) a reconstructed work future.

CONCLUSION

The scale of early work disability appears to be higher than previously understood. Although early medical intervention has improved disease management, significant work-based restrictions requiring intervention remain. Internalised and invisible work-related anxieties present early in the disease and need to be acknowledged and addressed by healthcare providers.IMPLICATIONS FOR REHABILITATIONEarly inflammatory arthritis causes significant challenges in work ability, and early work-based participation restrictions are present despite early use of drug therapy.Assessment of the client's subjective experience, including understanding the invisible burden, is an important aspect in determining the types of work interventions required.Disclosure of diagnosis in the work environment is associated with anxiety and fear, however, disclosure is influential in supporting capacity to retain work participation and should be included in work interventions.Routine healthcare should include early interventions to address work-based restrictions and supporting work retention to avoid work disability.

A Systematic Review of Job Loss Prevention Interventions for Persons with Inflammatory Arthritis

Purpose To present an overview of the evidence of the effect of job loss prevention interventions, aiming to improve work ability and decrease absenteeism and/or job loss in persons with inflammatory arthritis (IA). Method A systematic literature search in the databases PubMed, EMBASE, CINAHL, PsycINFO and the Cochrane Library was conducted. A search strategy used in a review from 2014 was copied and additional keywords were added with no time restriction. The Cochrane Risk of Bias Tool (RoB 1) was used for quality assessment and the overall quality of each study was determined using predetermined cut-off criteria, categorising studies to be of good-, acceptable- or low quality. Results were summarised narratively. Results Six randomised controlled trials (published in seven articles) were included, one of good quality and five of acceptable quality. One study identified significant improvements in work ability, while three found no significant difference between groups. One study identified significant difference in absenteeism, while two studies identified no difference between the intervention and control groups. Two studies identified significant reduction in job loss, while two studies identified no group difference. The inconsistent results may be due to heterogeneity in interventions and outcome measures used, and the results should therefore be interpreted with caution. Conclusion The results indicate that job loss prevention interventions may have an effect on work ability, absenteeism and in particular job loss among persons with IA. Further good-quality studies regarding job loss prevention interventions for people with IA are still recommended.

Recruitment cost and outcomes for an arthritis work disability prevention randomized clinical trial: The Work It study

Background

Despite the recommendations to increase recruitment of participants into clinical trials, investigators face costly challenges in trials investigating work disability interventions for people with arthritis and rheumatological conditions. This study aims to evaluate the recruitment costs and outcomes from a randomized controlled trial of an arthritis work disability prevention program conducted between 2011 and 2015, to inform planning and monitoring recruitment in similar studies.

Methods

Data were obtained from enrollment and financial records pertaining to recruitment costs for each recruitment approach employed. The cost for each recruitment method was calculated for total cost and cost per number of participants screened, eligible, and enrolled in the trial. Then the yield of each possible recruitment method was also determined based on the ratio of the number of randomized participants divided by the number of people contacted through each recruitment method. Finally, the

Results

Recruitment rate was lower than projected. Community advertising, specifically newspapers, was the most successful method of recruitment in terms of numbers, but social media, specifically Craigslist, was the least costly method used to recruit. Some social media approaches, including Facebook and LinkedIn, yielded few if any participants. Recruitment efforts used successfully in the past are not always effective.

Conclusions

Costs to recruit large numbers of people with arthritis into clinical trials are high. Investigators are encouraged to monitor recruitment efforts and evaluate the costs and outcomes of their strategies throughout the study period. Close consideration to recruitment costs should be considered as part of the research fiscal resources prior to and during the study period for long-term outcomes like work disability.

Trial registration

ClinicalTrials.gov Identifier: NCT01387100, date: 06/01/2011.

[Rehabilitation in Rheumatoid Arthritis]

Die rheumatoide Arthritis stellt unter den Erkrankungen des Bewegungssystems eine besondere Herausforderung für die Rehabilitationsmedizin dar 1. Eine genaue Kenntnis der Erkrankung, inklusive der medikamentösen und der nicht medikamentösen Behandlungsoptionen, ist die wesentliche Voraussetzung für einen nachhaltigen Rehabilitationserfolg und um den berechtigen Anspruch der Erkrankten auf berufliche und soziale Partizipation umzusetzen.

How to analyze work productivity loss due to health problems in randomized controlled trials? A simulation study

Background

An increasing number of randomized controlled trials (RCTs) have measured the impact of interventions on work productivity loss. Productivity loss outcome is inflated at zero and max loss values. Our study was to compare the performance of five commonly used methods in analysis of productivity loss outcomes in RCTs.

Methods

We conducted a simulation study to compare Ordinary Least Squares (OLS), Negative Binominal (NB), two-part models (the non-zero part following truncated NB distribution or gamma distribution) and three-part model (the middle part between zero and max values following Beta distribution). The main number of observations each arm, N_obs, that we considered were 50, 100 and 200. Baseline productivity loss was included as a covariate.

Results

All models performed similarly well when baseline productivity loss was set at the mean value. When baseline productivity loss was set at other values and N_obs = 50 with ≤5 subjects having max loss, two-part models performed best if the proportion of zero loss> 50% in at least one arm and otherwise, OLS performed best. When N_obs = 100 or 200, the three-part model performed best if the two arms had equal scale parameters for their productivity loss outcome distributions between zero and max values.

Conclusions

Our findings suggest that when treatment effect at any given values of one single covariate is of interest, the model selection depends on the sample size, the proportions of zero loss and max loss, and the scale parameter for the productivity loss outcome distribution between zero and max loss in each arm of RCTs.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12874-021-01330-w.

Predictors of presenteeism, absenteeism and job loss in patients commencing methotrexate or biologic therapy for rheumatoid arthritis

Objectives

Work is an important health outcome. This study aimed to identify predictors of work loss, absenteeism and presenteeism over 1 year in RA patients commencing treatment with MTX or biologics.

Methods

Patients aged 18–65 years in full/part-time employment from two UK prospective cohorts were included: MTX-starters = Rheumatoid Arthritis Medication Study; and biologic-starters = Biologics in Rheumatoid Arthritis Genetics and Genomics Study Syndicate. Presenteeism and absenteeism were assessed using the RA-specific Work Productivity Survey at baseline, and 6 and 12 months. Potential predictors including baseline age, gender, clinical measures (e.g. disability, pain, fatigue), psychological distress, occupation and EULAR response from baseline to 6 months were investigated.

Results

A total of 51/463 MTX-starters and 30/260 biologic-starters left work over 12 months. Higher baseline psychological distress in MTX-starters [odds ratio (OR) 1.1 (95% CI: 1.0, 1.1)] and higher disability in biologic-starters [OR 3.5 (95% CI: 1.4, 8.6)] predicted work loss. Some 16.1% of patients reported sick-leave, which was predicted by disability [OR (95% CI): MTX-starters: 1.5 (0.9, 2.3); biologic-starters: 2.4 (1.1, 5.2)]. Median presenteeism scores were very low (minimal interference) in both cohorts. Higher fatigue for MTX starters [incidence rate ratio 1.2 (95% CI: 1.0, 1.4)] and higher disability in biologic-starters (incidence rate ratio 1.4 (95% CI: 1.1, 1.7)] predicted presenteeism. Good EULAR response was associated with lower absenteeism and presenteeism in both cohorts.

Conclusion

Patients with RA still face significant limitations regarding their ability to work. Disability and EULAR response were the main predictors of work outcomes, emphasizing the need to control the disease and the importance of function in enabling work participation.

Depressive Symptoms and the Arthritis-Employment Interface: A Population-Level Study

OBJECTIVE

To examine the relationship between depressive symptoms, arthritis, and employment, and to determine whether this relationship differs across young, middle-age, and older working-age adults with arthritis.

METHODS

Data from the US National Health Interview Survey from 2013-2017 were analyzed. Analyses were restricted to adults with doctor-diagnosed arthritis of working age (ages 18-64 years) with complete data on depressive symptoms (n = 11,380). Covariates were sociodemographic information, health, and health system utilization variables. Employment prevalence was compared by self-reported depressive symptoms. We estimated percentages, as well as univariable and multivariable logistic regression models, to examine the relationship between depression and employment among young adults (ages 18-34 years), middle-age adults (ages 35-54 years), and older adults (ages 55-64 years).

RESULTS

Among all working-age US adults with arthritis, the prevalence of depressive symptoms was 13%. Those reporting depressive symptoms had a higher prevalence of fair/worse health (60%) and arthritis-attributable activity limitations (70%) compared to those not reporting depression (23% and 39%, respectively). Respondents with depressive symptoms reported significantly lower employment prevalence (30%) when compared to those not reporting depressive symptoms (66%) and lower multivariable-adjusted association with employment (prevalence ratio 0.88 [95% confidence interval (95% CI) 0.83-0.93]). Middle-age adults reporting depression were significantly less likely to be employed compared to their counterparts without depression (prevalence ratio 0.83 [95% CI 0.77-0.90]); similar but borderline statistically significant relationships were observed for both young adults (prevalence ratio 0.86 [95% CI 0.74-0.99]) and older adults (prevalence ratio 0.94 [95% CI 0.86-1.03]).

CONCLUSION

For adults with arthritis, depressive symptoms are associated with not participating in employment. Strategies to reduce arthritis-related work disability may be more effective if they simultaneously address mental health.

The effect on work presenteeism of job retention vocational rehabilitation compared to a written self-help work advice pack for employed people with inflammatory arthritis: protocol for a multi-centre randomised controlled trial (the WORKWELL trial)

Background

Work problems are common in people with inflammatory arthritis. Up to 50% stop work within 10 years due to their condition and up to 67% report presenteeism (i.e. reduced work productivity), even amongst those with low disease activity. Job retention vocational rehabilitation (JRVR) may help prevent or postpone job loss and reduce presenteeism through work assessment, work-related rehabilitation and enabling job accommodations. This aims to create a better match between the person’s abilities and their job demands. The objectives of the Workwell trial are to test the overall effectiveness and cost-effectiveness of JRVR (WORKWELL) provided by additionally trained National Health Service (NHS) occupational therapists compared to a control group who receive self-help information both in addition to usual care.

Methods

Based on the learning from a feasibility trial (the WORK-IA trial: ISRCTN76777720), the WORKWELL trial is a multi-centre, pragmatic, individually-randomised parallel group superiority trial, including economic evaluation, contextual factors analysis and process evaluation. Two hundred forty employed adults with rheumatoid arthritis, undifferentiated inflammatory arthritis or psoriatic arthritis (in secondary care), aged 18 years or older with work instability will be randomised to one of two groups: a self-help written work advice pack plus usual care (control intervention); or WORKWELL JRVR plus a self-help written work advice pack and usual care. WORKWELL will be delivered by occupational therapists provided with additional JRVR training from the research team. The primary outcome is presenteeism as measured using the Work Limitations Questionnaire-25. A comprehensive range of secondary outcomes of work, health, contextual factors and health resource use are included. Outcomes are measured at 6- and 12- months (with 12-months as the primary end-point). A multi-perspective within-trial cost-effectiveness analyses will also be conducted.

Discussion

This trial will contribute to the evidence base for provision of JRVR to people with inflammatory arthritis. If JRVR is found to be effective in enabling people to keep working, the findings will support decision-making about provision of JRVR by rheumatology teams, therapy services and healthcare commissioners, and providing evidence of the effectiveness of JRVR and the economic impact of its implementation.

Trial registration

Clinical Trials.Gov: NCT03942783. Registered 08/05/2019 (https://clinicaltrials.gov/ct2/show/NCT03942783); ISRCTN Registry: ISRCTN61762297. Registered:13/05/2019 (http://www.isrctn.com/ISRCTN61762297). Retrospectively registered.

Effectiveness and characteristics of interventions to improve work participation in adults with chronic physical conditions: a systematic review

PURPOSE

Chronic physical conditions often negatively affect work participation. The objective of this systematic review is to investigate the effectiveness and characteristics of vocational rehabilitation interventions for people with a chronic physical condition.

METHODS

Searches in five databases up to April 2020 identified 30 studies meeting our inclusion criteria. Two reviewers independently assessed and extracted data. The Grading of Recommendation, Assessment, Development and Evaluation (GRADE) framework was used to evaluate quality of evidence for three outcome measures related to work participation.

RESULTS

All vocational rehabilitation interventions consisted of multiple components, but their characteristics varied widely. Analysis of 22 trials yielded a moderate positive effect with moderate certainty of interventions on work status; analysis of five trials with low risk of bias showed a large positive effect with moderate certainty (risk ratio 1.33 and 1.57, respectively). In addition, in eight studies we found a moderate to small positive effect with low certainty on work attitude (standardized mean difference = 0.59 or 0.38, respectively). We found no effect on work productivity in nine studies.

CONCLUSION

The systematic review of the literature showed positive effects of vocational rehabilitation interventions on work status and on work attitude; we found no effect on work productivity.Implications for rehabilitationIn rehabilitation, addressing work participation of persons with a chronic physical condition using targeted interventions is beneficial to improve or sustain work participation, irrespective of the intervention characteristics and diagnosis.Interventions that include multiple components and offer individual support, whether or not combined with group sessions, are likely to be more effective in improving work participation in persons with a chronic physical condition.The overview of vocational interventions in this systematic review may assist healthcare professionals in making informed decisions as to which intervention to provide.Vocational rehabilitation, as well as studies on work participation in chronic disease, should include a long follow-up period to explore if work participation is sustainable and contributes to health and wellbeing.

Pain rates in general population for the period 1991-2015 and 10-years prediction: results from a multi-continent age-period-cohort analysis

Background

Pain is a common symptom, often associated with neurological and musculoskeletal conditions, and experienced especially by females and by older people. The aims of this study are to evaluate the temporal variations of pain rates among general populations for the period 1991–2015 and to project 10-year pain rates.

Methods

We used the harmonized dataset of ATHLOS project, which included 660,028 valid observations in the period 1990–2015 and we applied Bayesian age–period–cohort modeling to perform projections up to 2025. The harmonized Pain variable covers the content “self-reported pain experienced at the time of the interview”, with a dichotomous (yes or no) modality.

Results

Pain rates were higher among females, older subjects, in recent periods, and among observations referred to cohorts of subjects born between the 20s and the 60s. The 10-year projections indicate a noteworthy increase in pain rates in both genders and particularly among subjects aged 66 or over, for whom a 10–20% increase in pain rate is foreseen; among females only, a 10–15% increase in pain rates is foreseen for those aged 36–50.

Conclusions

Projected increase in pain rates will require specific interventions by health and welfare systems, as pain is responsible for limited quality of subjective well-being, reduced employment rates and hampered work performance. Worksite and lifestyle interventions will therefore be needed to limit the impact of projected higher pain rates.

Mobile Phone Text Messages and Effect on Treatment Adherence in Patients Taking Methotrexate for Rheumatoid Arthritis: A Randomized Pilot Study

OBJECTIVE

To assess the impact of weekly text messages on adherence in patients taking methotrexate (MTX) for rheumatoid arthritis (RA).

METHODS

This prospective, randomized pilot, single-site study included patients with RA stabilized using MTX alone or combined with biologics. Participants were randomized to 3 interventions: a standard consultation (controls), a 15-minute pharmacist-led counseling session, or the receipt of text message reminders. The change over time in the Compliance Questionnaire Rheumatology (CQR-19) score between baseline and 6 months was defined as the primary outcome for adherence. Multivariable analyses and final adherence (as a composite outcome of the CQR-19 score, the Girerd score, and the medication possession ratio) were probed in sensitivity tests. Rheumatologic scales, inflammation, and patient satisfaction were also analyzed.

RESULTS

A total of 96 patients (mean ± SD Disease Activity Score in 28 joints 2.42 ± 1.03) were monitored. The change over time in the CQR-19 score was significantly higher in the text message group (mean ± SD 3.32 ± 5.66; P = 0.02) than in the control group (mean ± SD 0.22 ± 6.56) and the pharmacist-led counseling group (mean ± SD -0.14 ± 7.56). Multivariable logistic regression showed that text messages remained associated with an increase in the CQR-19 score, independently of the baseline CQR-19 score (odds ratio 3.63 [95% confidence interval 1.26-10.49]; P = 0.017). In the text message group, the increase in the CQR-19 score was correlated with the Health Assessment Questionnaire score (r = -0.405, P = 0.021), and patient satisfaction was significantly higher (P < 0.01) than in the control group.

CONCLUSION

Our results showed evidence of a positive impact of text messages on adherence to MTX treatment for RA. The clinical benefit and the ideal target patient remain to be determined.