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PubMed1999

The treatment of attention-deficit hyperactivity disorder: an annotated bibliography and critical appraisal of published systematic reviews and metaanalyses.

CONTEXT: The Agency for Health Care Policy and Research charged the McMaster Evidence-based Practice Center with conducting a comprehensive systematic review of the literature on the treatment of attention-deficit hyperactivity disorder (ADHD), with input from various groups of stakeholders. One strategy used to avoid duplication of work included a critical appraisal of existing systematic reviews and metaanalyses. OBJECTIVE: To identify and appraise published metaanalyses and systematic reviews on the treatment of ADHD and to produce an annotated bibliography. DATA SOURCES: Medline, Cumulative Index in Nursing and Allied Health (CINAHL), Healthstar, Psycinfo, and Embase were searched to September 1998; the Cochrane Database (1998 issue 3), selected Internet sites, and the files of investigators were also reviewed. STUDY SELECTION: Review articles described as systematic reviews or metaanalyses or including a Methods section were identified independently by 3 reviewers. DATA EXTRACTION: Two reviewers extracted, by consensus, relevant information on the name, methodological quality, ADHD-related aspects (comorbid disorders, family characteristics) of those reviews; data on the population, study setting, interventions, and outcomes evaluated by the reviews were also retrieved. RESULTS: Thirteen reviews, published from 1982 to 1998, were included. Eight included metaanalysis and 5 a qualitative review. Nonpharmacological treatments were mentioned in 6 reviews and combination therapies in 3. One review focused on the treatment of adults. Forty-seven drugs and 20 adverse effects were mentioned. Most reviews had major methodological flaws. CONCLUSIONS: Most published systematic reviews and metaanalyses on the treatment of ADHD have limited value for guiding clinical, policy, and research decisions. A rigorous, systematic review following established methodological criteria is warranted.

Attention Deficit Disorder with Hyperactivity↗

PubMed2003

Is foundry work a risk for cardiovascular disease? A systematic review.

UNLABELLED: Aims Foundry work has been associated with an increased risk of adverse cardiovascular events. The objective of this review was systematically and qualitatively to review the published literature to determine whether foundry work is significantly associated with cardiac disease. METHODS: MEDLINE and Cochrane databases were systematically searched to identify relevant English-language publications between 1966 and October 2002. Articles were rated as 'good', 'fair' or 'poor', using published quality review criteria. Additionally, variables suggesting causality were extracted. A qualitative summation of the literature was presented for two scenarios: all studies, or using only studies rated 'fair' and above. RESULTS: Fourteen studies were analysed. Four were found to be of 'fair' quality, the remainder 'poor'. No 'good' quality studies were found. Nine studies show increased cardiac mortality among foundry worker groups and four studies also show a decreased risk. When only 'fair' quality studies are taken into consideration, two support increased risk of cardiac disease, one supports a protective effect of foundry work on cardiac disease and one revealed both increased and decreased risk for different cardiac outcomes. CONCLUSIONS: The exploration of foundry workers' risks of cardiac events reveals conflicting findings, which can only be partly attributed to confounders. Further prospective research to establish the independent contribution of foundry work to cardiac disease is needed.

Bias↗

PubMed2003

Clinical decision support provided within physician order entry systems: a systematic review of features effective for changing clinician behavior.

Computerized physician order entry (CPOE) systems represent an important tool for providing clinical decision support. In undertaking this systematic review, our objective was to identify the features of CPOE-based clinical decision support systems (CDSSs) most effective at modifying clinician behavior. For this review, two independent reviewers systematically identified randomized controlled trials that evaluated the effectiveness of CPOE-based CDSSs in changing clinician behavior. Furthermore, each included study was assessed for the presence of 14 CDSS features. We screened 10,023 citations and included 11 studies. Of the 10 studies comparing a CPOE-based CDSS intervention against a non-CDSS control group, 7 reported a significant desired change in professional practice. Moreover, meta-regression analysis revealed that automatic provision of the decision support was strongly associated with improved professional practice (adjusted odds ratio, 23.72; 95% confidence interval, 1.75-infiniti). Thus, we conclude that automatic provision of decision support is a critical feature of successful CPOE-based CDSS interventions.

Decision Making, Computer-Assisted↗

PubMed2005

Evidence of the efficacy of occupational therapy in different conditions: an overview of systematic reviews.

OBJECTIVE: To summarize the research evidence available from systematic reviews of the efficacy of occupational therapy (OT) for practitioners, researchers, purchasing organizations and policy-makers. DATA SOURCE: The search for systematic reviews was conducted in PubMed and the Cochrane Library (October 2004). METHODS: The reviews included were those that utilized a systematic search for evidence with regard to OT for specific patient groups. Data were summarized for patient group, interventions, outcome domains, type of study designs included, method of data synthesis and conclusions. RESULTS: Fourteen systematic reviews were included. Three reviews related to rheumatoid arthritis, four reviewed stroke and four focused on elderly people. Reviews of Parkinson's disease, multiple sclerosis, Huntington's disease, cerebral palsy and mental illnesses were also identified. The reviews of rheumatoid arthritis, stroke and elderly people showed evidence of the efficacy of OT in increasing functional abilities. Positive results were presented for quality of life and social participation in elderly people and stroke respectively. The efficacy of OT in all other patient groups is unknown due to insufficient evidence. CONCLUSION: This summary shows that elderly people and people with stroke or rheumatoid arthritis can expect to benefit from comprehensive OT. Evidence of the efficacy of specific interventions is sparse and should be addressed in future research. The evidence that does exist should be incorporated into OT practice.

Aged↗

PubMed2005

Towards systematic reviews that inform health care management and policy-making.

OBJECTIVES: To identify ways to improve the usefulness of systematic reviews for health care managers and policy-makers that could then be evaluated prospectively. METHODS: We systematically reviewed studies of decision-making by health care managers and policy-makers, conducted interviews with a purposive sample of them in Canada and the United Kingdom (n = 29), and reviewed the websites of research funders, producers/purveyors of research, and journals that include them among their target audiences (n = 45). RESULTS: Our systematic review identified that factors such as interactions between researchers and health care policy-makers and timing/timeliness appear to increase the prospects for research use among policy-makers. Our interviews with health care managers and policy-makers suggest that they would benefit from having information that is relevant for decisions highlighted for them (e.g. contextual factors that affect a review's local applicability and information about the benefits, harms/risks and costs of interventions) and having reviews presented in a way that allows for rapid scanning for relevance and then graded entry (such as one page of take-home messages, a three-page executive summary and a 25-page report). Managers and policy-makers have mixed views about the helpfulness of recommendations. Our analysis of websites found that contextual factors were rarely highlighted, recommendations were often provided and graded entry formats were rarely used. CONCLUSIONS: Researchers could help to ensure that the future flow of systematic reviews will better inform health care management and policy-making by involving health care managers and policy-makers in their production and better highlighting information that is relevant for decisions. Research funders could help to ensure that the global stock of systematic reviews will better inform health care management and policy-making by supporting and evaluating local adaptation processes such as developing and making available online more user-friendly 'front ends' for potentially relevant systematic reviews.

Canada↗

PubMed2004

Doubling the impact: publication of systematic review articles in orthopaedic journals.

BACKGROUND: Investigators aim to publish their research papers in top journals to disseminate their findings to the widest possible audience. Systematic reviews of the literature occupy the highest position in currently proposed hierarchies of evidence. We hypothesized that the number of citations (a measure of scholarly interest) for systematic reviews (or meta-analyses) published in leading orthopaedic journals would be greater than the number of citations for narrative reviews published in the same journals. METHODS: We identified fifteen journals that had high Science Citation Index impact factors for the orthopaedic subspecialty and were believed to have a higher yield of studies and reviews of scientific merit and clinical relevance. For the year 2000, six research associates applied methodological criteria to each article in each issue of the fifteen journals to determine whether the article was scientifically sound (rigorous versus nonrigorous). Of the 3916 articles identified, 2331 were original or review articles. We queried the ISI (Institute for Scientific Information) Web of Science database to ascertain, as of March 2003, the number of subsequent citations to each one of the reviews after its original publication in all journals that published both narrative and systematic reviews. RESULTS: Of the 2331 articles published across the fifteen journals in the year 2000, 110 were review articles. Only seventeen (15%) of the 110 reviews met our criteria for systematic reviews with rigor. Rigorous systematic reviews received more than twice the mean number of citations compared with other systematic or narrative reviews (13.8 compared with 6.0, p = 0.008). The rigor of a review was a significant predictor of the number of citations in other orthopaedic journals (p = 0.01). In addition, rigor was significantly associated with the number of citations in nonorthopaedic journals (p = 0.03). CONCLUSIONS: Our findings suggest that journal editors and authors can improve the relevance and scholarly interest in their reviews (as shown by the number of citations) by meeting standard guidelines for methodological rigor.

Humans↗

PubMed2003

Association of autistic spectrum disorder and the measles, mumps, and rubella vaccine: a systematic review of current epidemiological evidence.

OBJECTIVE: To systematically review the evidence for and against the existence of an association between autistic spectrum disorder (ASD) and the measles, mumps, and rubella (MMR) vaccine. STUDY DESIGN: We conducted a systematic review of the medical literature to identify all controlled epidemiological articles examining for an association between ASD and the MMR vaccine. We extracted data from the articles on the characteristics and objectives of the study as well as evidence of an association. RESULTS: Twelve articles met the inclusion criteria. One study found no difference in the rates of ASD and the MMR vaccine in children who were vaccinated and those who were not. Six studies examined for evidence of an increase in ASD associated with an increase in the MMR vaccine coverage, none of which showed evidence of an association. Four studies examined if a variant form of ASD was associated with the MMR vaccine, none of which showed evidence of an association. Eight studies attempted to determine if there was a temporal association between developing ASD and receiving the MMR vaccine. Of these, 1 study identified an increase in parental concern in the 6-month period following vaccination with MMR in one of its analyses. The results of all other studies showed no association between ASD and the MMR vaccine. CONCLUSIONS: The current literature does not suggest an association between ASD and the MMR vaccine; however, limited epidemiological evidence exists to rule out a link between a rare variant form of ASD and the MMR vaccine. Given the real risks of not vaccinating and that the risks and existence of variant ASD remain theoretical, current policies should continue to advocate the use of the MMR vaccine.

Autistic Disorder↗

PubMed2005

Sources of evidence for systematic reviews of interventions in diabetes.

AIMS: To analyse the effect on systematic reviews in diabetes interventions of including only trials that are indexed in medline, and to assess the impact of adding trials from other databases and the grey literature. METHODS: All systematic reviews of diabetes interventions which included a meta-analysis of randomized controlled trials, and were published since 1996, were selected. The impact on the meta-analysis of including only those trials indexed in medline, and the effect of then adding trials from other sources, was assessed. Where possible this was measured quantitatively, by redoing the meta-analysis, otherwise a qualitative estimate was made. RESULTS: Forty-four systematic reviews met our inclusion criteria. There were 120 articles reporting trial data which were not indexed in medline. These came from 52% of the reviews. In 34% of the reviews, basing a meta-analysis on a search of only medline would miss trials that could affect the result. Sources of non-medline data which had the biggest effect on the meta-analyses were journal articles from central and embase (mainly in Diabetes, Nutrition and Metabolism) and unpublished data (mainly from industry). The exceptions were journal articles on herbal medicine, mostly indexed in Chinese language databases. CONCLUSIONS: A search of only the medline database is insufficient for systematic reviews of diabetes, because in about 34% of reviews the missed trials could affect the results of the meta-analysis. It is recommended that central (on the Cochrane Library) also be searched. Scanning meeting abstracts, and seeking unpublished data are also recommended if the intervention has only recently been introduced.

Databases, Bibliographic↗

PubMed2003

Further statistics in dentistry Part 8: Systematic reviews and meta-analyses.

A systematic review of research evidence is an efficient approach to integrating existing information, invariably a multiplicity of published articles, with a view to establishing whether the scientific findings are consistent. If so, it may be possible to draw conclusions and make recommendations about treatment regimens or observed effects which have greater credence than those obtained from individual studies. The systematic review relies on a specified checklist which determines which articles should be included in the review, and how each should be critically appraised to provide relevant information relating to the focus of the review.

Algorithms↗

PubMed2000

Autologous stem cell transplantation for malignancy: a systematic review of the literature.

A systematic review of the literature was undertaken to assess what published evidence is currently available to support the increasing use of autologous stem cell transplantation (ASCT), and to evaluate the published data with regard to the comparative cost of high-dose and conventional therapy. The review aimed to identify all published, randomized controlled trials (RCTs) comparing high-dose therapy (HDT) with ASCT versus conventional chemotherapy (CC) in acute lymphoblastic leukaemia, non-Hodgkin's lymphoma, Hodgkin's disease, multiple myeloma, and breast, lung, testicular and ovarian cancer. The review also aimed to identify all studies that had compared the cost of the two treatment strategies. Reports were identified by systematic searches of Cancerlit, Embase and Medline, and handsearching of several conference proceedings. Where possible, pooled odds ratios (ORs) were calculated according to the fixed-effect model. A total of 18 randomized trials were identified in acute lymphoblastic leukaemia, non-Hodgkin's lymphoma, Hodgkin's disease, multiple myeloma, and breast, lung and testicular cancer. Trials were generally small and no disease site had sufficient information to determine reliably whether high-dose therapy with autologous transplant is more effective than CC. Five studies were identified that compared the cost of the two treatments. These found the cost of HDT to be between one and four times higher than that of CC. Further randomized trials are required. Where appropriate, these should include economic assessment and assessments of long-term toxicity.

Antineoplastic Agents↗

PubMed2006

Balloon kyphoplasty and vertebroplasty for vertebral compression fractures: a comparative systematic review of efficacy and safety.

STUDY DESIGN: Systematic review and meta-regression. OBJECTIVES: To compare the efficacy and safety of balloon kyphoplasty and vertebroplasty for the treatment of vertebral compression fractures, and to examine the prognostic factors that predict outcome. SUMMARY OF BACKGROUND DATA: A previous systematic review of vertebroplasty by Levine et al in 2000 identified seven case series studies and no controlled studies. METHODS: A number of electronic databases were searched through March 1, 2004. Citation searches of included studies were undertaken and contact was made with experts in the field. No language restrictions were applied. All controlled and uncontrolled studies were included with the exception of case reports. Prognostic factors responsible for pain relief and cement leakage were examined using meta-regression. RESULTS: The following studies were included: balloon kyphoplasty (three nonrandomized comparative studies against conventional medical therapy and 13 case series), vertebroplasty (one nonrandomized comparative study against conventional medical care and 57 cases series), balloon kyphoplasty versus vertebroplasty (one nonrandomized comparative study). The majority of studies were undertaken in older women with osteoporotic vertebral compression fractures with long-term pain that was refractory to medical treatment. At this time, there is no good quality direct comparative evidence of balloon kyphoplasty versus vertebroplasty. From indirect comparison of case series evidence, the procedures appear to provide similar gains in pain relief while for balloon kyphoplasty there is better documentation of gains in patient functionality and quality of life. The level of cement leakage and number of reported adverse events (pulmonary emboli and neurologic injury) in balloon kyphoplasty was significantly lower than for vertebroplasty. These findings were confirmed by meta-regression analysis. CONCLUSIONS: There is Level III evidence to support balloon kyphoplasty and vertebroplasty as effective therapies in the management of patients with symptomatic osteoporotic vertebral compression fractures refractory to conventional medical therapy. Although there was a good ratio of benefit to harm for both procedures, balloon kyphoplasty appears to offer the better adverse event profile. These conclusions need to be updated on the basis of the findings of ongoing randomized controlled trials.

Aged↗

PubMedDate not supplied

Systematic reviews and their application to research in speech and language therapy: a response to T. R. Pring's 'Ask a silly question: two decades of troublesome trials' (2004).

BACKGROUND: The advent of evidence-based healthcare has seen a rise in the use of systematic reviews to bring together the findings from research studies. The use of systematic reviews in speech and language therapy (SLT) was criticized in this journal in 2004 by T. R. Pring. It was claimed that their findings are misleading due to the potential inclusion of biased data, and uninformative due to a lack of detail in the reporting of interventions. It is argued that outcome research should be carried out in a series of phases in which small-scale research precedes large-scale research. This, it is argued, is most likely to demonstrate statistically significant effects and also help to ensure that therapies become sufficiently defined so that clinicians can apply them in practice. AIMS: This paper argues that the above criticism of systematic reviews is based on a narrow conception of their capabilities: on the popular misapprehension that all systematic reviews answer effectiveness questions using only experimental studies and contain meta-analyses. Different methods for systematic reviews are described and their application within clinical outcome research is discussed with reference to a phased structure for empirical enquiry. MAIN CONTRIBUTION: Systematic reviews seek to identify and synthesize information within a given topic area. They are used to answer a wide range of research questions and the studies they include are not limited exclusively to experimental designs. Methods of synthesis can include both statistical approaches, such as meta-analysis, and 'qualitative' approaches, such as meta-ethnography and thematic analysis. Knowledge of the current state of research is essential for a sequentially phased approach within outcome research to operate. Since systematic reviews are summaries of research activity, they can provide this knowledge and should therefore be considered a valuable tool within outcome research. CONCLUSIONS: A systematic review using 'qualitative' and/or statistical methods for combining studies can be carried out within or across any of the phases within outcome research. Far from being uninformative, this can help bring together what is, and what is not, known and indicate the kinds of therapies that may be beneficial in the clinical setting and therapies which would benefit from further research and development.

Evidence-Based Medicine↗

PubMed2005

An analysis of systematic reviews indicated low incorpororation of results from clinical trial quality assessment.

OBJECTIVE: We investigated the frequency of quality assessment of randomized controlled trials within systematic reviews and the incorporation of the quality assessment in the analysis. STUDY DESIGN AND SETTING: We included new systematic reviews of at least five trials of therapeutic or preventive interventions that appeared in issue 2, 2003, of the Cochrane Database of Systematic Reviews. All systematic reviews in the 2002 issues of the Annals of Internal Medicine, BMJ, JAMA, and Lancet were identified in Pubmed. All reviews were assessed under unblinded conditions using preprinted extraction forms. RESULTS: Trial quality was assessed in all Cochrane reviews and most (74%) of the paper reviews. When we excluded 11 paper reviews that were also published as Cochrane review, the percentage remained similar (67%). Fifty percent of all Cochrane reviews and 61% of all paper reviews incorporated the results of the quality assessment in the analysis. CONCLUSION: Half of the reviews did not incorporate the results of the quality assessment in the analysis. Authors, peer-reviewers, and editors should no longer focus exclusively on whether quality assessment has been performed but should also concentrate on incorporation of quality assessments in the analysis of the systematic review.

Databases, Bibliographic↗

PubMed2007

Use of helium-oxygen mixture in adult patients presenting with exacerbations of asthma and chronic obstructive pulmonary disease: a systematic review.

We examined systematically all controlled and cross-over randomised trials in patients with acute exacerbations of asthma and chronic obstructive pulmonary disease comparing Heliox against air-oxygen mixtures. Fourteen studies were identified. In asthma studies, peak expiratory flow rate (PEFR) was increased by an average of 29.6% (95% CI 16.6-42.6) by Heliox-driven nebulisers, or by 13.3 l.min(-1) (95% CI 3.71-22.81) absolute. In studies of patients with chronic obstructive pulmonary disease receiving non-invasive ventilation the arterial carbon dioxide tension (P(a)co(2)) and respiratory rate were unchanged: weighted mean difference for P(a)co(2)-0.29kPa (95% CI - 0.64-0.07) favoured Heliox, and for respiratory rate 1.6 breaths.min(-1) (95% CI - 0.93, 4.14) favoured control. Heliox minimally reduced the work of breathing in intubated patients, and reduced intrinsic positive end expiratory pressure (iPEEP). The use of Heliox to drive nebulisers in patients with acute asthma slightly improves airflow measures. We were unable to determine whether this improved recovery.

Adult↗

PubMed2006

Impact of initial discordant treatment with beta-lactam antibiotics on clinical outcomes in adults with pneumococcal pneumonia: a systematic review.

OBJECTIVE: To systematically examine the available evidence regarding the effect of initial discordant therapy with beta-lactam antibiotics on mortality, clinical success, and bacteriological eradication in patients with pneumococcal pneumonia. METHODS: We analyzed prospective studies that compared the clinical effectiveness of concordant (active in vitro) beta-lactam monotherapy with discordant (inactive in vitro) monotherapy with the same beta-lactam in patients with pneumococcal pneumonia. Relevant studies were identified from searches of the PubMed database (1950 to November 2005) and references from articles. Outcomes between groups of patients who received concordant and discordant treatment were compared by simple pooling of data and by estimation of pooled odds ratios or risk difference (RD), when applicable. RESULTS: Six prospective studies were included in our analysis. No statistically significant difference was found in mortality of patients treated with beta-Iactam concordant and discordant therapy (51/275 [19%] vs 9/42 [21%]; P = .66; data from 6 studies; RD, -0.05; 95% confidence interval [CI], -0.23 to 0.12; data from 5 studies). In addition, no statistically significant difference was found regarding clinical success (37/42 [88%] vs 5/6 [83%]; P = .57; odds ratio, 2.57; 95% CI, 0.46 to 14.34; RD, 0.07; 95% CI, -0.36 to 0.50; data from 3 studies) or bacteriological success (24/30 [80%] vs 3/3 [100%]; P = .99; and RD, -0.18; 95% CI, -0.79 to 0.42; data from 2 studies) between concordant and discordant therapy. CONCLUSION: The initial discordant treatment with beta-lactam antibiotics was not associated with a statistically significant Increase in mortality or clinical or bacteriological failure of therapy for pneumococcal pneumonia.

Anti-Bacterial Agents↗

PubMed2026

Type, severity, frequency and management of adverse reactions associated with ultrasound contrast agents: a systematic review and meta-analysis.

OBJECTIVES: This systematic review and meta-analysis are aimed at evaluating the incidence of adverse drug reactions (ADRs) following administration of clinically approved ultrasound contrast agents (UCAs) in adults and children, to assess risks in patients with cardiovascular disease and in pregnancy, and to evaluate the effectiveness of emergency management of severe ADRs. MATERIALS AND METHODS: A PRISMA 2020 systematic review was conducted searching PubMed, Scopus, and Embase. Two reviewers independently screened, extracted data, and assessed quality. Incidence estimates were pooled when feasible, stratified by age group, contrast agent, and administration route. RESULTS: Seventy-four studies encompassing > 1 million adults and > 36,000 children were included, contributing multiple analytic cohorts to the quantitative synthesis. Severe acute ADRs were extremely rare (6 and 16 cases per 100,000 in adults and children, respectively) and absent following endocavitary administration in children. Non-severe acute ADRs occurred in 11 and 8 cases per 10,000 adults and children, respectively. Delayed reactions were very rare (< 1 case per million in adults). No significant safety differences emerged between UCA products. The incidence of ADRs in patients with cardiovascular disease was analogous to the general population. No ADRs were reported in pregnant women. Standard emergency management was effective in almost all serious cases, though rare fatalities occurred. CONCLUSION: UCAs show an excellent safety profile in adults and children, with very rare severe ADRs and few non-severe, typically self-limiting reactions. Strict adherence to recommended emergency management protocols mitigates the remaining risks, supporting safe use across a broad range of clinical indications. PROSPERO REGISTRATION: CRD42023432668. KEY POINTS: Question What is the incidence, type, and severity of acute and delayed ADRs associated with clinically approved UCAs across different patient populations? Findings Severe acute adverse reactions are very rare, and non-severe reactions are rare and self-limiting, with no significant safety differences between adults, children, or patients with cardiovascular disease. Clinical relevant UCAs show an excellent safety profile across populations. These findings support their safe clinical use as reliable alternatives to iodine-based and gadolinium-based contrast agents in routine diagnostic imaging.

Contrast Media↗

PubMed2006

Timing of thoracic and lumbar fracture fixation in spinal injuries: a systematic review of neurological and clinical outcome.

A systematic review of all available evidence on the timing of surgical fixation for thoracic and lumbar fractures with respect to clinical and neurological outcome was designed. The purpose of this review is to clarify some of the controversy about the timing of surgical fracture fixation in spinal trauma. Better neurological outcome, shorter hospital stay and fewer complications have been reported after early fracture fixation. But there are also studies showing no difference in neurological outcome when compared to late treatment. Mortality is another controversial point since a recent report of higher mortality in early treated patients. A systematic review of the literature was preformed. Ten articles were included. Early fracture fixation is associated with less complications, shorter hospital and ICU stay. The effect of early treatment on the neurological outcome remains unclear due to the contradictory results of the included studies. Early thoracic and lumbar fracture fixation results in improvement of clinical outcome, but the effect on neurological outcome remains controversial.

Fracture Fixation, Internal↗

PubMed2005

Workplace-based return-to-work interventions: a systematic review of the quantitative literature.

INTRODUCTION: A systematic review was conducted to review the effectiveness of workplace-based return-to-work (RTW) interventions. METHOD: Seven databases were searched, in English and French, between January 1990 and December 2003 for peer-reviewed studies of RTW interventions provided at the workplace to workers with work disability associated with musculoskeletal or other pain-related conditions. Methodological quality appraisal and data extraction were conducted by pairs of reviewers. RESULTS: Of a total of 4124 papers identified by the search, 10 studies were of sufficient quality to be included in the review. There was strong evidence that work disability duration is significantly reduced by work accommodation offers and contact between healthcare provider and workplace; and moderate evidence that it is reduced by interventions which include early contact with worker by workplace, ergonomic work site visits, and presence of a RTW coordinator. For these five intervention components, there was moderate evidence that they reduce costs associated with work disability duration. Evidence for sustainability of these effects was insufficient or limited. Evidence regarding the impact of supernumerary replacements was insufficient. Evidence levels regarding the impact of the intervention components on quality-of-life was insufficient or mixed. CONCLUSIONS: Our systematic review provides the evidence base supporting that workplace-based RTW interventions can reduce work disability duration and associated costs, however the evidence regarding their impact on quality-of-life outcomes was much weaker.

Cost-Benefit Analysis↗