Which is an advantage of meta-analysis compared to narrative systematic reviews?
T or F: An advantage of meta-analysis is that it reduces the risk of a type I error as compared to a single study. Rationale: Meta-analysis increases power and thus reduces the risk of a type II error when compared to a single study. – Problem formulation: Delineate research question or hypothesis to be tested.
What is the order of doing a literature search systematically?
Eight key stages were determined relating specifically to literature searching in systematic reviews. They were: who should literature search, aims and purpose of literature searching, preparation, the search strategy, searching databases, supplementary searching, managing references and reporting the search process.
How does literature search for systematic reviews?
CREATING A SYSTEMATIC SEARCH STRATEGY
- Determine a clear and focused question.
- Describe the articles that can answer the question.
- Decide which key concepts address the different elements of the question.
- Decide which elements should be used for the best results.
- Choose an appropriate database and interface to start with.
What is the difference between a meta analysis and systematic review?
A systematic review attempts to gather all available empirical research by using clearly defined, systematic methods to obtain answers to a specific question. A meta-analysis is the statistical process of analyzing and combining results from several similar studies.
Which of the following is a common criticism of meta-analysis?
A common criticism of meta-analysis is that the analysis focuses on the summary effect, and ignores the fact that the treatment effect may vary from study to study. In fact, the goal of a meta-analysis should be to synthesize the effect sizes, and not simply (or necessarily) to report a summary effect.
Which is a criterion for undertaking a meta-analysis quizlet?
The results among the primary studies in a meta-analysis must all be consistent. One criterion for a meta-analysis concerns whether there is a sufficient base of knowledge for statistical integration.
What are the steps to perform a meta analysis?
When doing a meta-analysis you basically follow these steps:
- Step 1: Do a Literature Search.
- Step 2: Decide on some ‘Objective’ Criteria for Including Studies.
- Step 3: Calculate the Effect Sizes.
- Step 4: Do the Meta-Analysis.
- Step 5: Write it up, lie back and Wait to see your first Psychological Bulletin Paper.
How many studies do you need for a meta-analysis?
How do you find a systematic review?
Where to search for a systematic review
- PROSPERO International prospective register of systematic reviews.
- Tripdatabase and Evidence search have filters for systematic reviews.
- Cochrane Library: CDSR (including protocols)
- Joanna Briggs Institute.
- UK Database of Uncertainties about the Effects of Treatments (DUETs)
What are the disadvantages of meta-analysis?
Additionally, meta-analyses can be poorly executed. Carelessness in abstracting and summarizing appropriate studies, failure to consider important covariates, bias on the part of the meta-analyst and overstatements of the strength and precision of the results can all contribute to invalid meta-analyses.
What is at risk when the GREY literature is excluded from a meta-analysis?
What is at risk when the grey literature is excluded from a meta-analysis? A. The risk is that studies with nonsignificant results will be underrepresented.
What makes a good meta-analysis?
The results of a meta-analysis, even if they are statistically significant, must have utility in clinical practice or constitute a message for researchers in the planning of future studies. The results must have external validity or generalizability and must impact the care of an individual patient.
Which of the following should be included in the discussion section of a research report?
A good discussion section includes analysis of any unexpected findings. This paragraph should begin with a description of the unexpected finding, followed by a brief interpretation as to why you believe it appeared and, if necessary, its possible significance in relation to the overall study.
What is Handsearching?
Handsearching is the task of searching through medical journals or conference publications for reports of controlled trials which are not indexed in the major electronic databases like MEDLINE and Embase.
What does manual search mean?
Manual searches are supplemental approaches to database searches to identify additional primary studies for systematic reviews. The authors argue that these manual approaches, in particular hand-searching and perusing reference lists, are often considered the same yet lead to different outcomes.
What is a hand search of literature?
Hand-searching (also handsearching and hand searching) is a manual method of scanning select journals from cover to cover, page-for-page for relevant articles in case they were missed during indexing. “Handsearching may include checking the reference lists of journal articles, a technique called snowballing.