Pharmacological treatment of oro-facial pain - health technology assessment including a systematic review with network meta-analysis

2017 ◽  
Vol 44 (10) ◽  
pp. 800-826 ◽  
Author(s):  
B. Häggman-Henrikson ◽  
P. Alstergren ◽  
T. Davidson ◽  
E. D. Högestätt ◽  
P. Östlund ◽  
...  
2021 ◽  
Vol 25 (45) ◽  
pp. 1-66
Author(s):  
Steve Halligan ◽  
Darren Boone ◽  
Lucinda Archer ◽  
Tariq Ahmad ◽  
Stuart Bloom ◽  
...  

Background Identification of biomarkers that predict severe Crohn’s disease is an urgent unmet research need, but existing research is piecemeal and haphazard. Objective To identify biomarkers that are potentially able to predict the development of subsequent severe Crohn’s disease. Design This was a prognostic systematic review with meta-analysis reserved for those potential predictors with sufficient existing research (defined as five or more primary studies). Data sources PubMed and EMBASE searched from inception to 1 January 2016, updated to 1 January 2018. Review methods Eligible studies were studies that compared biomarkers in patients who did or did not subsequently develop severe Crohn’s disease. We excluded biomarkers that had insufficient research evidence. A clinician and two statisticians independently extracted data relating to predictors, severe disease definitions, event numbers and outcomes, including odds/hazard ratios. We assessed risk of bias. We searched for associations with subsequent severe disease rather than precise estimates of strength. A random-effects meta-analysis was performed separately for odds ratios. Results In total, 29,950 abstracts yielded just 71 individual studies, reporting 56 non-overlapping cohorts. Five clinical biomarkers (Montreal behaviour, age, disease duration, disease location and smoking), two serological biomarkers (anti-Saccharomyces cerevisiae antibodies and anti-flagellin antibodies) and one genetic biomarker (nucleotide-binding oligomerisation domain-containing protein 2) displayed statistically significant prognostic potential. Overall, the strongest association with subsequent severe disease was identified for Montreal B2 and B3 categories (odds ratio 4.09 and 6.25, respectively). Limitations Definitions of severe disease varied widely, and some studies confounded diagnosis and prognosis. Risk of bias was rated as ‘high’ in 92% of studies overall. Some biomarkers that are used regularly in daily practice, for example C-reactive protein, were studied too infrequently for meta-analysis. Conclusions Research for individual biomarkers to predict severe Crohn’s disease is scant, heterogeneous and at a high risk of bias. Despite a large amount of potential research, we encountered relatively few biomarkers with data sufficient for meta-analysis, identifying only eight biomarkers with potential predictive capability. Future work We will use existing data sets to develop and then validate a predictive model based on the potential predictors identified by this systematic review. Contingent on the outcome of that research, a prospective external validation may prove clinically desirable. Study registration This study is registered as PROSPERO CRD42016029363. Funding This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 25, No. 45. See the NIHR Journals Library website for further project information.


2018 ◽  
Vol 34 (5) ◽  
pp. 447-457 ◽  
Author(s):  
Christian A. Bellemare ◽  
Pierre Dagenais ◽  
Suzanne K.-Bédard ◽  
Jean-Pierre Béland ◽  
Louise Bernier ◽  
...  

Objectives:Integration of ethics into health technology assessment (HTA) remains challenging for HTA practitioners. We conducted a systematic review on social and methodological issues related to ethical analysis in HTA. We examined: (1) reasons for integrating ethics (social needs); (2) obstacles to ethical integration; (3) concepts and processes deployed in ethical evaluation (more specifically value judgments) and critical analyses of formal experimentations of ethical evaluation in HTA.Methods:Search criteria included “ethic,” “technology assessment,” and “HTA”. The literature search was done in Medline/Ovid, SCOPUS, CINAHL, PsycINFO, and the international HTA Database. Screening of citations, full-text screening, and data extraction were performed by two subgroups of two independent reviewers. Data extracted from articles were grouped into categories using a general inductive method.Results:A list of 1,646 citations remained after the removal of duplicates. Of these, 132 were fully reviewed, yielding 67 eligible articles for analysis. The social need most often reported was to inform policy decision making. The absence of shared standard models for ethical analysis was the obstacle to integration most often mentioned. Fairness and Equity and values embedded in Principlism were the values most often mentioned in relation to ethical evaluation.Conclusions:Compared with the scientific experimental paradigm, there are no settled proceedings for ethics in HTA nor consensus on the role of ethical theory and ethical expertise hindering its integration. Our findings enable us to hypothesize that there exists interdependence between the three issues studied in this work and that value judgments could be their linking concept.


BMJ Open ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. e052049
Author(s):  
Christine Mpundu-Kaambwa ◽  
Gang Chen ◽  
Kim Dalziel ◽  
Nancy Devlin ◽  
Julie Ratcliffe

IntroductionMeasures of health-related quality of life (HRQoL), accompanied by the values (or utilities) required to estimate quality-adjusted life-years, are crucial for determining health benefits within economic evaluation and health technology assessment. Several generic and condition-specific measures or instruments of HRQoL, accompanied by values, currently exist for application with child populations. However, there is a lack of a structured summary of guidelines and recommendations for applying these measures in practice. This protocol describes a systematic review of guidelines and recommendations for child and proxy completion of child-specific measures of HRQoL. The aims of the review are to (1) identify and summarise published guidelines and recommendations for existing child-specific measures of HRQoL, (2) determine whether the identified guidelines and recommendations differ by instrument and child characteristics, (3) identify current gaps in these guidelines and recommendations and (4) identify best practices for child self and proxy assessment in paediatric HRQoL measurement for economic evaluation and health technology assessment.Methods and analysisThe review will identify, collate and synthesise published guidelines and recommendations for existing child-specific utility measures of HRQoL. Electronic databases to be searched include the Cochrane Library, Medline, Scopus, Web of Science, EconLit, PsycINFO, CINAHL, Embase and Informit. The search will be extended to websites of (1) international organisations for health technology assessment, (2) regulation, health economics and HRQoL outcomes research and (3) instrument developers. Three reviewers will independently screen titles and abstracts against the inclusion criteria. A narrative synthesis will describe the key features of the guidelines identified.Ethics and disseminationEthical approval is not required as the proposed systematic review will not use primary data. A paper of the systematic review will be submitted to a peer-reviewed journal for publication.PROSPERO registration numberCRD42020207160.


2018 ◽  
Vol 34 (S1) ◽  
pp. 26-26
Author(s):  
Bing Guo ◽  
Carmen Moga

Introduction:Although individual patient data meta-analysis (IPD MA) is considered the gold standard of systematic reviews (SRs), a recent International Network of Agencies for Health Technology Assessment survey indicates that IPD MA is not frequently included in a health technology assessment (HTA), or conducted by HTA researchers. The objective of this presentation is to describe our first experience with including an IPD MA in a HTA report, discuss the added value for an evidence-based decision-making process, and advocate for expanding work in this field.Methods:An overview of SRs on endovascular therapy for acute ischemic stroke included one IPD MA and six study-level SRs/MAs. Methodological quality was appraised by two reviewers independently using the tool recommended by the Cochrane IPD MA working group for the IPD MA, and the AMSTAR (A MeaSurement Tool to Assess systematic Reviews) for the study-level reviews. Pooled results from subgroup analyses based on access to primary patient data were compared to those reported in SRs that conducted subgroup analyses based on the published data to identify patients or clinical factors that would impact clinical outcomes.Results:The overall findings were similar between the IPD MA and other SRs/MAs. However, when compared to aggregated data used in study-level SRs/MAs, subgroup analyses based on patient data allowed for adjustment of confounders, multiple categories within a subgroup, standardization of outcomes across trials, and detailed data checking. Larger sample sizes of each pre-defined subgroup permitted for more precise estimates of treatment effects. A number of methodological issues in the IPD MA were identified; particularly, no assessment of risk of bias of included trials was conducted.Conclusions:Access to original patient data is demanding and conducting IPD MA requires extensive resources. The advantages of having an improved quality analysis, an appropriate quantification of the effects in the analyzed subgroups, and precision of results may justify additional efforts, and may increase confidence in the decision-making process.


Author(s):  
Lieke Fleur Heupink ◽  
Mervett Isbeih ◽  
Sharif Qaddomi ◽  
Elizabeth Peacocke ◽  
Ingvil Sæterdal ◽  
...  

IntroductionHealth technology assessment (HTA) can play a key role in evidence-based decision-making. However, HTA requires resources that might be lacking in low-income settings. To test the feasibility of adapting existing evidence as part of the HTA process, this project evaluated the effectiveness and economic impact of breast cancer screening programs for women over 40 years in the West Bank, where mammography screening is provided for free in governmental clinics.MethodsWe conducted a search for systematic reviews, HTAs and guidelines in electronic databases. We included the most recent global systematic review and meta-analysis that fulfilled our inclusion criteria. The European Network for Health Technology Assessment (EUnetHTA) adaptation toolkit was used to guide adaptation and undertake a budget impact analysis of the economic impact of mammography screening. We build capacity by working as a team of HTA experts and first-time HTA researchers. The results were disseminated to raise awareness for HTA.ResultsThe European Commission Guidelines on Breast Cancer Screening were identified as most recent global systematic review with meta-analyses, out of 2,365 references. The adapted evidence may inform policies on screening in the West Bank. Our experience is that adaption requires extensive skills and resources, including finding, assessing, and adapting relevant evidence. The EUnetHTA toolkit is useful, but also adds to the workload. Furthermore, local stakeholder engagement is important in topic selection, to access information, and to contextualize global evidence to the local setting.ConclusionsThis study is currently ongoing, but preliminary findings show that producing an HTA by adapting existing evidence in resource-limited settings is feasible. There is a need for nuanced guidance on transferability of evidence from other settings. Future studies should investigate innovative methods to optimize the adaption process. Capacity building in adaptation is important to ensure the production of quality HTA products. Inclusion of local team members and stakeholders is important for future development of HTA in the region.


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