In search of better science: on the epistemic costs of systematic reviews and the need for a pluralistic stance to literature search

2019 ◽  
Vol 122 (2) ◽  
pp. 1267-1274 ◽  
Author(s):  
Andrea Polonioli
2019 ◽  
Vol 13 (1) ◽  
pp. 526-536
Author(s):  
Federica Di Spirito ◽  
Ludovico Sbordone ◽  
Vincenzo Pilone ◽  
Francesco D’Ambrosio

Background: Obesity represents one of the main health problems worldwide and is considered a risk factor for several diseases, including periodontitis, which is a microbially-associated inflammatory disease affecting the tooth-supporting structures. Objective: The aim of this review was to report the current direct and indirect evidence concerning the possible association between obesity and periodontitis and their putative molecular links. Methods: A literature search was conducted between January 1999 and September 2019, in PubMed/MEDLINE and Science Direct databases, using pertinent keyword combined by Boolean operators. Through a multi-step screening process (literature search; articles title and abstract evaluation and full-text reading), studies fitting inclusion/exclusion criteria were considered for the review. Results: 35 studies were included in the present review (17 observational studies; 7 systematic reviews; 11 systematic reviews with meta-analysis), focusing on the direct and indirect evidence of the possible association between obesity and periodontitis and their potential etiopathogenic molecular links Conclusion: Although the majority of the studies reported a positive association between obesity and periodontitis, the heterogeneity of the classification criteria and of the clinical parameters employed in the studies for both obesity and periodontitis evaluation, complicated the comparison of the results, thus considered inconclusive. Although several putative molecular pathogenic links between obesity and periodontitis have been highlighted, further studies, with longer follow-ups and with homogeneous clinical criteria, are needed to better understand the putative relation between obesity and periodontal disease.


2018 ◽  
Vol 157 (04) ◽  
pp. 392-399
Author(s):  
Sebastian Scheidt ◽  
Patrick Vavken ◽  
Cornelius Jacobs ◽  
Sebastian Koob ◽  
Davide Cucchi ◽  
...  

AbstractThe rising number of medical publications makes it difficult to keep up-to-date on scientific knowledge. In recent years, reviews in the form of narrative or systematic publications and meta-analyses have increased. These can only be interpreted and evaluated if the reader understands the techniques used. This review article describes the differences between narrative and systematic reviews, together with the characteristics of meta-analysis, and discusses their interpretation. The concept of systematic reviews and meta-analysis includes a systematic literature search and summary, together with an appraisal of the quality of the publications. Systematic reviews are often considered to be original studies due to their structure and ability to reduce bias.


2016 ◽  
Vol 13 (10) ◽  
pp. 1070-1078 ◽  
Author(s):  
Louise C. Mâsse ◽  
Teresia M. O’Connor ◽  
Andrew W. Tu ◽  
Allison W. Watts ◽  
Mark R. Beauchamp ◽  
...  

Background:The purpose of this study was to compare the physical activity parenting practices (PAPPs) parents report using with the PAPPs incorporated in the published literature.Methods:PAPPs in the literature were identified by reviewing the content of 74 published PAPP measures obtained from current systematic reviews supplemented with a literature search. The types of PAPPs used by parents were identified by surveying a stratified sample of 134 Canadian and US parents of 5- to 12 year-old children. Items from the literature and parent responses were coded using the same coding scheme. Differences between the PAPPs emphasized by the parents and the literature were examined.Results:Parents significantly emphasized different issues than what is measured in the literature (P < .001). Parents emphasized more control (13.6% vs. 6.9%), modeling and teaching (13.2% vs. 9.2%), and structural strategies (32.2% vs. 28.6%) and less autonomy support (11.8% vs. 14.0%), logistical support (9.9% vs. 12.8%), and responsiveness strategies (19.3% vs. 28.5%).Conclusions:Physical activity practices most often employed by parents are not the ones emphasized in current measures. The extent to which putting more emphasis on the areas identified by parents will increase the predictive validity of the measures warrants further examination.


2017 ◽  
Vol 403 (1) ◽  
pp. 119-129 ◽  
Author(s):  
Käthe Goossen ◽  
Solveig Tenckhoff ◽  
Pascal Probst ◽  
Kathrin Grummich ◽  
André L. Mihaljevic ◽  
...  

2016 ◽  
Vol 23 (13) ◽  
pp. 1531-1545
Author(s):  
Jamal M. Alkhateeb ◽  
Muna S. Alhadidi

Objective: No systematic reviews could be identified in the literature that address ADHD research in Arab countries. In an attempt to help fill this gap, this systematic review was undertaken. Method: An electronic literature search of ADHD studies carried out in Arab countries was done by using Google Scholar, PsycINFO, PubMed, Education Resources Information Center (ERIC), and Arabpsynet. Results: The search yielded 58 studies (10 studies on psychoeducational and social aspects of ADHD, 26 prevalence studies and two reviews of epidemiology of ADHD, and 22 studies on risk factors and comorbidities in ADHD). Conclusion: Although there has been an increase in ADHD research in Arab countries in recent years, this research remains relatively sparse and used methods and procedures that limit the generalizability of the findings.


2020 ◽  
Author(s):  
Signe Forbech Elmose ◽  
Gustav Østerheden Andersen ◽  
Leah Yacat Carreon ◽  
Freyr Gauti Sigmundsson ◽  
Mikkel Østerheden Andersen

Abstract Background The concept of segmental lumbar spine instability is controversial with varying definitions. However, suspicion of instability is used as an indication for vertebral fusion surgery in patients with lumbar degenerative spondylolisthesis and spinal stenosis. The objectives of this systematic review are to describe, the definitions of segmental instability in the degenerative lumbar spine, in studies of patients with lumbar spinal stenosis and/or lumbar degenerative spondylolisthesis, involving diagnostic imaging. And to describe which of the measurable radiological variables used to define instability have been validated against dynamic flexion-extension radiographs. Method Systematic review conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Systematic literature search will be conducted in MEDLINE and EMBASE databases, supplemented by search in Cochrane Library. International Clinical Trials Registry Platform Search Portal and ClinicalTrials.gov will be searched for ongoing or recently completed trials. PROSPERO (International Prospective Register of Systematic Reviews) will be searched before initiating this review. In addition, a gray literature search will be conducted. Studies eligible for inclusion are clinical and biomechanical studies on adult patients with degenerative spondylolisthesis and spinal stenosis and surgical treatment hereof, studies involving diagnostic imaging. We will include studies giving a definition or describing patho-anatomical findings of segmental instability or any synonym or antonym hereof. Two reviewers will independently screen articles, involving a third reviewer as referee. Screening process and data extraction conducted using Covidence software. Data synthesis presented in results checklist and systematic narrative synthesis. Data synthesis on secondary objective by contingency table. Discussion With this systematic review we want to contribute to evidence based treatment planning of lumbar degenerative spondylolisthesis with spinal stenosis. We also aim to present our result in a comprehensive manner, to encourage consensus regarding the definition of segmental instability. Registration This protocol was submitted to the International Prospective Register of Systematic Reviews (PROSPERO) on 29. April 2020, submission ID: 182827


Author(s):  
Jocelyn Boice

Researchers in conservation biology and other non-medical fields are adopting systematic review as a research methodology. Since this methodology requires extensive and well-documented literature searching, it is beneficial for information professionals to understand disciplinary developments in its use. This article investigates trends in systematic review publication in conservation biology journals between 1998 and 2017 and examines the prevalence of search reporting among these systematic reviews. Results show an increase in published systematic reviews over the study period, and the majority of these include a description of the literature search. However, evidence of variable search quality and reporting indicates an important role for librarians in improving literature search strategies and documentation.


Author(s):  
Ana Dias ◽  
Gonçalo Santinha ◽  
Mário Rodrigues ◽  
Alexandra Queirós ◽  
Carlos Rodrigues ◽  
...  

Promoting accessibility in tourism can impact on other areas, including sustainable mobility, social inclusion, and territorial marketing, since it implies taking the needs of all people into account to access tourism products and services, including those with permanent or temporary disabilities. Smart cities may change the way people experience their surroundings and their ability to provide contextual services is a key aspect to make cities more accessible, comprehensible, and enjoyable. The systematic review reported by the present chapter aimed to identify relevant research studies supported by smart cities infrastructures with an impact on accessible tourism. The literature search and the analysis of the retrieved articles were performed according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. The results identify the most relevant achievements related to accessible tourism in the context of smart cities, including the types of smart services being developed and their maturity level.


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