scholarly journals Searching for Adverse Effects in MEDLINE and EMBASE Requires a Combined Approach for Efficient Retrieval

2006 ◽  
Vol 1 (3) ◽  
pp. 60
Author(s):  
Marcy L. Brown

A review of: Golder, Su, Heather M. McIntosh, Steve Duffy, and Julie Glanville. “Developing Efficient Search Strategies to Identify Reports of Adverse Effects in MEDLINE and EMBASE.” Health Information & Libraries Journal 23.1 (Mar. 2006): 3-12. Objective – To assess the sensitivity and precision of various search strategies for retrieving adverse effects studies from the MEDLINE and EMBASE databases. Design – Analytical survey. Subjects – A case study using a recently published systematic review of the effectiveness and adverse effects of seven new anti-epileptic drugs. Setting – MEDLINE and EMBASE searches performed by researchers at the Centre for Reviews and Dissemination and the UK Cochrane Centre Search Filters Design Group at the University of York, UK. Methods – Five key approaches to searching were defined. The first approach used either text words or controlled vocabulary to search for specific adverse effects. The second used subheadings or qualifiers either attached to drug names found in the controlled vocabulary (approach 2a) or ‘floating’ without drug names (approach 2b). The third approach used text words as synonyms for the phrase ‘adverse effects.’ The fourth used controlled indexing terms for adverse effects. The fifth and final approach used two published search strategies incorporating study design (Badgett et al., Loke et al.). These five approaches were used to search for studies of the adverse effects of seven new anti-epileptic drugs. 5,011 unique papers were retrieved. Of these, 236 were judged potentially relevant and 225 full text articles were obtained. The inclusion criteria from a previously published systematic review (Wilby et al.) were applied to the papers, and 79 met the criteria. Five papers were added to the set after being identified from reference lists, clinical experts, and other sources. This new set of 84 studies was used as a quasi gold standard (QGS) against which more than 300 combinations of the five approaches could be tested. To create the set of possible approaches, the researchers combined search strategies one through four in all possible ways, and used all available subheading combinations from 2a and 2b. The Badgett and Loke searches were tested separately. Main Results – Sensitivity and precision were determined for each combination. Formulas used to calculate sensitivity and precision were provided. In MEDLINE, search strategies using floating subheadings achieved the highest sensitivity. The most useful single subheading in both MEDLINE and EMBASE was “adverse effects,” with 79.1% and 79.5% sensitivity respectively. Of the more than 300 combinations tested, the most sensitive combination in MEDLINE included specified adverse effects in combination with the floating subheadings “adverse effects,” “complications,” and “drug effects,” together with text words for adverse effects. This strategy had 97.0% sensitivity, but low precision at 2.8%. The highest precision was achieved by using subheadings attached to drug indexing terms. In EMBASE, the strategy of Loke et al. provided the highest sensitivity at 86.3% and precision of 2.0%. Since researchers are not likely to know in advance all of the reported adverse effects of a particular drug therapy, the most sensitive strategies without specific adverse events were also identified. The search with the highest sensitivity in MEDLINE had 95.5% sensitivity, and 97.3% sensitivity in EMBASE. Conclusion – Searching for adverse effects requires a combination of approaches in both MEDLINE and EMBASE. In MEDLINE, the most sensitive combination yielded 97.0% sensitivity. Regardless of the approach used, precision remains low. An effective generic search filter for adverse effects searches may not yet be feasible. More research is needed on search strategies, as well as more consistent methods of reporting and indexing adverse effects.

2019 ◽  
Vol 14 (1) ◽  
pp. 65-67
Author(s):  
Ann Glusker

A Review of: Golder, S., Wright, K., & Loke, Y.K. (2018). The development of search filters for adverse effects of surgical interventions in MEDLINE and Embase. Health Information and Libraries Journal, 35(2), 121-129. https://doi.org/10.1111/hir.12213 Abstract Objective – “To develop and validate search filters for MEDLINE and Embase for the adverse effects of surgical interventions” (p.121). Design – From a universe of systematic reviews, the authors created “an unselected cohort…where relevant articles are not chosen because of the presence of adverse effects terms” (p.123). The studies referenced in the cohort reviews were extracted to create an overall citation set. From this, three equal-sized sets of studies were created by random selection, and used for: development of a filter (identifying search terms); evaluation of the filter (testing how well it worked); and validation of the filter (assessing how well it retrieved relevant studies). Setting – Systematic reviews of adverse effects from the Database of Abstracts of Reviews of Effects (DARE), published in 2014. Subjects – 358 studies derived from the references of 19 systematic reviews (352 available in MEDLINE, 348 available in Embase). Methods – Word and phrase frequency analysis was performed on the development set of articles to identify a list of terms, starting with the term creating the highest recall from titles and abstracts of articles, and continuing until adding new search terms produced no more new records recalled. The search strategy thus developed was then tested on the evaluation set of articles. In this case, using the strategy recalled all of the articles which could be obtained using generic search terms; however, adding specific search terms (such as the MeSH term “surgical site infection”) improved recall. Finally, the strategy incorporating both generic and specific search terms for adverse effects was used on the validation set of articles. Search strategies used are included in the article, as is a list in the discussion section of MeSH and Embase indexing terms specific to or suggesting adverse effects. Main Results – “In each case the addition of specific adverse effects terms could have improved the recall of the searches” (p. 127). This was true for all six cases (development, evaluation and validation study sets, for each of MEDLINE and Embase) in which specific terms were added to searches using generic terms, and recall percentages compared. Conclusion – While no filter can deliver 100% of items in a given standard set of studies on adverse effects (since title and abstract fields may not contain any indication of relevance to the topic), adding specific adverse effects terms to generic ones while developing filters is shown to improve recall for surgery-related adverse effects (similarly to drug-related adverse effects). The use of filters requires user engagement and critical analysis; at the same time, deploying well-constructed filters can have many benefits, including: helping users, especially clinicians, get a search started; managing a large and unwieldy set of citations retrieved; and to suggest new search strategies.


BMJ Open ◽  
2014 ◽  
Vol 4 (10) ◽  
pp. e006108 ◽  
Author(s):  
Erica Eassom ◽  
Domenico Giacco ◽  
Aysegul Dirik ◽  
Stefan Priebe

ObjectiveTo synthesise the evidence on implementing family involvement in the treatment of patients with psychosis with a focus on barriers, problems and facilitating factors.DesignSystematic review of studies evaluating the involvement of families in tripartite communication between health professionals, ‘families’ (or other unpaid carers) and adult patients, in a single-family context. A theoretical thematic analysis approach and thematic synthesis were used.Data sourcesA systematic electronic search was carried out in seven databases, using database-specific search strategies and controlled vocabulary. A secondary manual search of grey literature was performed as well as using forwards and backwards snowballing techniques.ResultsA total of 43 studies were included. The majority featured qualitative data (n=42), focused solely on staff perspectives (n=32) and were carried out in the UK (n=23). Facilitating the training and ongoing supervision needs of staff are necessary but not sufficient conditions for a consistent involvement of families. Organisational cultures and paradigms can work to limit family involvement, and effective implementation appears to operate via a whole team coordinated effort at every level of the organisation, supported by strong leadership. Reservations about family involvement regarding power relations, fear of negative outcomes and the need for an exclusive patient–professional relationship may be explored and addressed through mutually trusting relationships.ConclusionsImplementing family involvement carries additional challenges beyond those generally associated with translating research to practice. Implementation may require a cultural and organisational shift towards working with families. Family work can only be implemented if this is considered a shared goal of all members of a clinical team and/or mental health service, including the leaders of the organisation. This may imply a change in the ethos and practices of clinical teams, as well as the establishment of working routines that facilitate family involvement approaches.


2016 ◽  
Vol 8;19 (8;11) ◽  
pp. 537-550
Author(s):  
Nader Pouratian

Background: Anterior cingulotomy for chronic pain aims to modulate patients’ attention or emotional reaction to pain rather than to modulate pain intensity. Objectives: To evaluate the clinical efficacy, both short- and long-term, of anterior cingulotomy in the treatment of chronic pain. Study Design: Systematic review. Setting: This systematic review assessed studies reporting anterior cingulotomy for the treatment of chronic pain. Methods: A systematic search of Web of Science, Scopus, PubMed, and PsychINFO was performed using both key words and controlled vocabulary. Articles included in this review included peerreviewed articles describing clinical outcomes or efficacy of cingulotomy in the treatment of chronic pain with minimum follow-up of 3 months for non-malignant and 2 weeks for malignant pain. Articles reporting cingulectomies or cingulotomy only as combined with other ablative procedures were excluded, as were individual case reports. Results: A total of 11 articles encompassing 224 patients are included in the review, with age ranging 22 to 85 (mean: 56) years at the time of the operation, 59% of which were men. Greater than 60% of patients across all studies were reported to have significant pain relief post-operatively as well as at one year after surgery. Common transient adverse effects included urinary incontinence and confusion/disorientation, subsiding within days postoperatively. Serious/permanent adverse effects included seizure in less than 5%, hemiparesis in less than 1%, and personality change in less than 1% of operations reported across all studies, all of which occurred primarily in operations where magnetic resonance (MR)-guidance was not used. Limitations: The limitations of this systematic review include the lack of studies other than observational reports and the inevitable heterogeneity between included studies. Conclusions: Despite decreased utilization in recent years, anterior cingulotomy is an effective neurosurgical intervention in the treatment of pain and carries little risk of permanent or serious adverse effects. Key words: Anterior cingulotomy, chronic pain, stereotaxis, systematic review, pain, cingulate gyrus, cingulotomy, intractable pain


2020 ◽  
Vol 20 (3) ◽  
pp. 284-290
Author(s):  
Jocelyn Chan ◽  
Yue Wu ◽  
James Wood ◽  
Mohammad Muhit ◽  
Mohammed K. Mahmood ◽  
...  

Background and Objectives: Congenital Rubella Syndrome (CRS) is the leading cause of vaccine-preventable congenital anomalies. Comprehensive country-level data on the burden of CRS in low and middle-income countries, such as Bangladesh, are scarce. This information is essential for assessing the impact of rubella vaccination programs. We aim to systematically review the literature on the epidemiology of CRS and estimate the burden of CRS in Bangladesh. Methods: We conducted a systematic review of existing literature and transmission modelling of seroprevalence studies to estimate the pre-vaccine period burden of CRS in Bangladesh. OVID Medline (1948 – 23 November 2016) and OVID EMBASE (1974 – 23 November 2016) were searched using a combination of the database-specific controlled vocabulary and free text terms. We used an age-stratified deterministic model to estimate the pre-vaccination burden of CRS in Bangladesh. Findings: Ten articles were identified, published between 2000 and 2014, including seven crosssectional studies, two case series and one analytical case-control study. Rubella seropositivity ranged from 47.0% to 86.0% among all age population. Rubella sero–positivity increased with age. Rubella seropositivity among women of childbearing age was 81.0% overall. The estimated incidence of CRS was 0·99 per 1,000 live births, which corresponds to approximately 3,292 CRS cases annually in Bangladesh. Conclusion: The estimated burden of CRS in Bangladesh during the pre-vaccination period was high. This will provide important baseline information to assess the impact and cost-effectiveness of routine rubella immunisation, introduced in 2012 in Bangladesh.


Author(s):  
Ben Clift

This chapter charts changing character of the economic ideas informing fiscal policymaking in Britain, and Fund responses to them. Drawing on interviews with the Fund’s UK Missions and UK authorities, it shows how, despite the IMF’s prizing of its non-political, scientific image, its differing views of UK policy space and prioritization became the stuff of a contested politics. The central assumption of the coalition government’s construction of fiscal rectitude was that Britain faced a ‘crisis of debt’, yet the IMF did not share this view. Fund work on fiscal multipliers being higher during recessions, and the adverse effects of fiscal consolidation on growth, all had pointed relevance for UK policy. The coalition government saw little potential for activist fiscal policy in support of growth. In 2013 Blanchard accused the UK authorities of ‘playing with fire’ by pursuing excessively harsh austerity which threatened a prolonged and deep recession.


Author(s):  
Jacob S. Aday ◽  
Alan K. Davis ◽  
Cayla M. Mitzkovitz ◽  
Emily K. Bloesch ◽  
Christopher C. Davoli

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