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Jennifer Tetzlaff

Jennifer Tetzlaff
Independent Researcher · N/A

About

75
Publications
114,146
Reads
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281,489
Citations
Citations since 2017
18 Research Items
211910 Citations
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2017201820192020202120222023010,00020,00030,00040,00050,000
2017201820192020202120222023010,00020,00030,00040,00050,000
2017201820192020202120222023010,00020,00030,00040,00050,000

Publications

Publications (75)
Article
Uvod: Preporučene smjernice za izvještavanje u sustavnim pregledima i metaanalizama (engl. Preferred Reporting Items for Systematic reviews and Meta-Analyses, PRISMA) prvi su put objavljene 2009. godine kako bi autorima sustavnih pregleda omogućile transparentno izvještavanje o predmetu istraživanja, korištenim metodama i dobivenim rezultatima. Tij...
Article
Full-text available
The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did, and what they found. Over the past decade, advances in systematic review methodology and terminology have necessitated an update t...
Article
Full-text available
The methods and results of systematic reviews should be reported in sufficient detail to allow users to assess the trustworthiness and applicability of the review findings. The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement was developed to facilitate transparent and complete reporting of systematic reviews an...
Article
Full-text available
The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did, and what they found. Over the past decade, advances in systematic review methodology and terminology have necessitated an update t...
Article
The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did, and what they found. Over the past decade, advances in systematic review methodology and terminology have necessitated an update t...
Article
Full-text available
The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did, and what they found. Over the past decade, advances in systematic review methodology and terminology have necessitated an update t...
Article
Objectives To describe the processes used to update the PRISMA 2009 statement for reporting systematic reviews, present results of a survey conducted to inform the update, summarise decisions made at the PRISMA update meeting, and describe and justify changes made to the guideline. Methods We reviewed 60 documents with reporting guidance for syste...
Preprint
Background: The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) Statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did and what they found. Over the last decade, there have been many advances in systematic review methodology and terminolo...
Preprint
The methods and results of systematic reviews should be reported in sufficient detail to allow users to assess the trustworthiness and applicability of the review findings. The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement was developed to facilitate transparent and complete reporting of systematic reviews an...
Preprint
Objectives: To describe the processes used to update the PRISMA 2009 statement for reporting systematic reviews, present results of a survey conducted to inform the update, summarise decisions made at the PRISMA update meeting, and describe and justify changes made to the guideline.Methods: We reviewed 60 documents with reporting guidance for syste...
Article
Full-text available
Background Automated approaches to improve the efficiency of systematic reviews are greatly needed. When testing any of these approaches, the criterion standard of comparison (gold standard) is usually human reviewers. Yet, human reviewers make errors in inclusion and exclusion of references. Objectives To determine citation false inclusion and fa...
Article
Full-text available
Background: Systematic reviews (SRs) can help decision makers interpret the deluge of published biomedical literature. However, a SR may be of limited use if the methods used to conduct the SR are flawed, and reporting of the SR is incomplete. To our knowledge, since 2004 there has been no cross-sectional study of the prevalence, focus, and comple...
Data
Screening and data extraction forms. (DOCX)
Article
Revisioni sistematiche e meta-analisi sono strumenti indispensabili per sintetizzare in modo accurato ed affidabile le evidenze sull’efficacia e sulla sicurezza degli interventi sanitari. Tuttavia, la loro chiarezza e trasparenza non è ancora ottimale. Un reporting inadeguato delle revisioni sistematiche ne diminuisce il valore per professionisti s...
Article
Full-text available
: Protocols of systematic reviews and meta-analyses allow for planning and documentation of review methods, act as a guard against arbitrary decision making during review conduct, enable readers to assess for the presence of selective reporting against completed reviews, and, when made publicly available, reduce duplication of efforts and potential...
Article
Full-text available
Systematic reviews should build on a protocol that describes the rationale, hypothesis, and planned methods of the review; few reviews report whether a protocol exists. Detailed, well-described protocols can facilitate the understanding and appraisal of the review methods, as well as the detection of modifications to methods and selective reporting...
Article
Full-text available
Artículo original: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group. Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Med. 2009;6:e1000097.The original authors have not revised and verified the Spanish translation, and not necessary endorse it. Los autores originales no han revisado ni verif...
Chapter
The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement is a guidance for authors reporting a systematic review and/or meta-analysis of randomized trials and other types of research designs evaluating a healthcare intervention, such as a drug, device, operative procedure, or psychological counseling. PRISMA can be...
Article
Full-text available
Patients undergoing renal transplant procedures require multi-agent immunosuppressive regimens both short term (induction phase) and long term (maintenance phase) to minimize the risk of organ rejection. There are several drug classes and agents for immunosuppression. Use of these agents may increase the risk of different harms including not only i...
Article
Full-text available
Systematic reviews should build on a protocol that describes the rationale, hypothesis, and planned methods of the review; few reviews report whether a protocol exists. Detailed, well-described protocols can facilitate the understanding and appraisal of the review methods, as well as the detection of modifications to methods and selective reporting...
Article
Full-text available
Hypertension has been cited as the most common attributable risk factor for death worldwide, and in Canada more than one of every five adults had this diagnosis in 2007. In addition to different lifestyle modifications, such as diet and exercise, there exist many pharmaco-therapies from different drug classes which can be used to lower blood pressu...
Chapter
Knowledge synthesis describes the method of synthesizing results from individual studies and interpreting these results within the context of global evidence. These methods can be used to understand inconsistencies across studies and identify gaps in the literature for future research endeavors. With the advent of evidence-based decision-making, kn...
Article
Full-text available
Background: Systematic reviews (SRs) have become increasingly important for informing clinical practice; however, little is known about the reporting characteristics and the quality of the SRs relevant to the practice of rehabilitation health professionals. Objective: The purpose of this study was to examine the reporting quality of a representa...
Article
Full-text available
High quality protocols facilitate proper conduct, reporting, and external review of clinical trials. However, the completeness of trial protocols is often inadequate. To help improve the content and quality of protocols, an international group of stakeholders developed the SPIRIT 2013 Statement (Standard Protocol Items: Recommendations for Interven...
Article
Full-text available
The protocol of a clinical trial serves as the foundation for study planning, conduct, reporting, and appraisal. However, trial protocols and existing protocol guidelines vary greatly in content and quality. This article describes the systematic development and scope of SPIRIT (Standard Protocol Items:Recommendations for Interventional Trials) 2013...
Article
Full-text available
Recent evidence has highlighted deficiencies in clinical trial protocols, having implications for many groups. Existing guidelines for randomized clinical trial (RCT) protocol content vary substantially and most do not describe systematic methodology for their development. As one of three prespecified steps for the systematic development of a guide...
Article
Full-text available
Background All randomized clinical trials (RCTs) require a protocol; however, numerous studies have highlighted protocol deficiencies. Reporting guidelines may improve the content of research reports and, if developed using robust methods, may increase the utility of reports to stakeholders. The objective of this study was to systematically identif...
Data
Appendix A. Systematic review protocol. Appendix B. Search strategy for Ovid MEDLINE® (including in-process and other non-indexed citations) 1948 to September Week 4 2010. Appendix C. Results of contact with nominated trial funding agencies. Appendix D. Details of guideline development methods described in reports (N = 40 guidelines).
Article
Full-text available
Background The objective of this systematic review was to examine the benefits, harms and pharmacokinetic interactions arising from the co-administration of commonly used dietary supplements with cardiovascular drugs. Many patients on cardiovascular drugs take dietary supplements for presumed benefits and may be at risk for adverse supplement-drug...
Data
Table S3. a Priori outcomes for grading the strength of evidence.
Data
Table S1. Selected cardiovascular drugs for current review.
Article
Full-text available
Funnel plots, and tests for funnel plot asymmetry, have been widely used to examine bias in the results of meta-analyses. Funnel plot asymmetry should not be equated with publication bias, because it has a number of other possible causes. This article describes how to interpret funnel plot asymmetry, recommends appropriate tests, and explains the i...
Article
Background In systematic reviews, search precision is generally traded off against the desire to retrieve all relevant studies; however, there is no published evidence on typical precision values. The objective of this study is to establish typical values for the precision of systematic review searches in healthcare.Methods From an existing cross-s...
Article
Full-text available
David Moher and colleagues introduce PRISMA, an update of the QUOROM guidelines for reporting systematic reviews and meta-analyses
Article
To review methods for completing knowledge synthesis. We discuss how to complete a broad range of knowledge syntheses. Our article is intended as an introductory guide. Many groups worldwide conduct knowledge syntheses, and some methods are applicable to most reviews. However, variations of these methods are apparent for different types of reviews,...
Article
Editor's Note: PTJ's Editorial Board has adopted PRISMA to help PTJ better communicate research to physical therapists. For more, read Chris Maher's editorial starting on page 870. Membership of the PRISMA Group is provided in the Acknowledgments. This article has been reprinted with permission from the Annals of Internal Medicine from Moher D, Lib...
Article
Full-text available
Systematic reviews and meta-analyses are essential to summarize evidence relating to efficacy and safety of health care interventions accurately and reliably. The clarity and transparency of these reports, however, is not optimal. Poor reporting of systematic reviews diminishes their value to clinicians, policy makers, and other users. Since the de...
Article
Full-text available
Systematic reviews and meta-analyses are essential to summarize evidence relating to efficacy and safety of health care interventions accurately and reliably. The clarity and transparency of these reports, however, is not optimal. Poor reporting of systematic reviews diminishes their value to clinicians, policy makers, and other users.Since the dev...
Data
Checklist of items to include when reporting a systematic review or meta-analysis (downloadable template document for researchers to re-use). (0.04 MB DOC)
Data
Flow of information through the different phases of a systematic review (downloadable template document for researchers to re-use). (0.08 MB DOC)
Data
Checklist of items to include when reporting a systematic review or meta-analysis (downloadable template document for researchers to re-use). (0.04 MB DOC)
Data
Flow of information through the different phases of a systematic review (downloadable template document for researchers to re-use). (0.08 MB DOC)
Article
Full-text available
David Moher and colleagues introduce PRISMA, an update of the QUOROM guidelines for reporting systematic reviews and meta-analyses
Article
Full-text available
Systematic reviews and meta-analyses have become increasingly important in health care. Clinicians read them to keep up to date with their field [1],[2], and they are often used as a starting point for developing clinical practice guidelines. Granting agencies may require a systematic review to ensure there is justification for further research [3]...
Article
To determine which factors predict favorable results and positive conclusions in systematic reviews (SRs) and to assess the level of agreement between SR results and conclusions. A sample of 296 English SRs indexed in MEDLINE (November, 2004) was obtained. Two investigators independently categorized SR characteristics, results, and conclusions. Des...
Article
Full-text available
Systematic reviews and meta-analyses are essential to summarise evidence relating to efficacy and safety of healthcare interventions accurately and reliably. The clarity and transparency of these reports, however, are not optimal. Poor reporting of systematic reviews diminishes their value to clinicians, policy makers, and other users. Since the de...
Article
The reporting of the search methods used in systematic reviews has implications for how systematic reviews are critically appraised, their reproducibility and how easily they may be updated. The objective of this paper was to identify validated or evaluated search reporting instruments used in reporting systematic review searches and to compare rep...
Article
To summarize the evidence concerning bias and confounding in conducting systematic reviews (SRs). Literature was identified through searching the Cochrane Library, MEDLINE, PsycINFO until November 2006, and the authors' files. Studies were included if they were SRs of bias that can occur while conducting a SR. Risk of bias in the SRs was appraised...
Article
Metered-dose inhalers and spacers (MDI+S) are at least as effective as nebulizers for treating children with mild to moderate asthma exacerbations. Despite advantages in terms of efficacy, side effects, and ease of use, MDI+S are not used in many North American pediatric emergency departments (PEDs). To survey emergency physicians, emergency nurses...
Article
Full-text available
Systematic reviews (SRs) have become increasingly popular to a wide range of stakeholders. We set out to capture a representative cross-sectional sample of published SRs and examine them in terms of a broad range of epidemiological, descriptive, and reporting characteristics, including emerging aspects not previously examined. We searched Medline f...

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