Mean and Mean difference are the two key statistical measures used in the statistical analysis. Both are essential for meta-analysis as well. Mean and Mean difference are used for the interpretation of a large set of values into a single number which explains the heterogeneity and variation among the individual values. However, one of a common challenge in meta-analysis is the unavailability of this data (mean and standard deviation).
Q & A Forum
Systematic Review & Meta Analysis
Q: How should the selection process be conducted in a systematic review (SR) or meta-analysis (MA)?
The selection process should be carried out by at least two independent reviewers to ensure accuracy and reduce bias. Each reference must be screened by at least two reviewers to maintain reliability.
Q: What are the two phases of the selection process?
A: The selection process consists of:
- Title and Abstract Screening Phase – References are evaluated based on their title and abstract. At this stage, no justification for exclusion is required; a lack of relevance to the selection criteria is sufficient.
- Full-Text Screening Phase – The full text of remaining studies is reviewed, and specific reasons for exclusion must be documented in the PRISMA study selection flowchart.
Q: What tools are available to assist with the selection process?
A: Several software tools can streamline the selection process, including:
- EndNote
- Rayyan
- Covidence
- DistillerSR
These tools help organize references, facilitate collaboration, and improve efficiency.
Q: How can disagreements between reviewers be resolved?
A: Since each reference is screened by at least two reviewers, differences in judgment may arise. Disagreements should be resolved through discussion, and if consensus cannot be reached, a third reviewer should make the final decision.
Q: What are the two phases of the selection process?
A: The selection process consists of
- Title and Abstract Screening Phase – References are estimated grounded on their title and abstract. At this stage, no reason for rejection is needed; a lack of applicability to the selection criteria is sufficient.
- Full- Text Webbing Phase – The full text of remaining studies is reviewed, and specific reasons for rejection must be proved in the PRISMA study selection flowchart.
Q: What tools are available to help with the selection process?
A: Several software tools can streamline the selection process, including
- EndNote
- Rayyan
- Covidence
- DistillerSR
These tools help organize references, support collaboration, and ameliorate effectiveness.
Q: How can dissensions between pundits be resolved?
A: Since each reference is screened by at least two pundits, differences in judgment may arise. dissensions should be resolved through discussion, and if agreement cannot be reached, a third critic should make the final decision.
Q: Is the selection process time- consuming, and how can it be optimized?
A: Yes, opting applicable studies can be a lengthy process. still, using methodical screening software and following predefined selection criteria can help streamline the process and ameliorate effectiveness.