Different sources of data used to extract for writing a systematic review - Pubrica
                     WHAT ARE THE  
DIFFERENT SOURCES OF 
 DATA USED TO 
EXTRACT  FOR 
WRITING A  
SYSTEMATIC REVIEW
An Academic presentation by
Dr. Nancy Agnes, Head, Technical Operations, Pubrica 
 Group: www.pubrica.com
Email: [email protected]
Today's Discussion
Outline
In-Brief  
Introductio
n
Different 
Sources of 
Data
Data Extraction 
Tools  Conclusion
In-Brief
Systematic reviews have studied rather than reports as the unit of interest. So, 
 many reports of the same study need to be identified and linked together  
before or after data extraction. Because of the growing abundance of data  
sources (e.g., studies registers, regulatory records, and clinical research  
reports), review authors can determine which sources can include the most  
relevant details for the review and provide a strategy in place to address  
contradictions if evidence were inconsistent throughout sources.
Introduction
Systematic analyses seek to find all important trials to  
their study issue and synthesise information about the  
design, risk of bias, and outcomes of those studies.
As a result, a systematic study is heavily dependent 
 on interpreting and analysing evidence from these  
analyses.
For systematic analyses, data collected should be  
reliable, complete, and available for future updating  
and data sharing.
Contd...
The methods used to make these choices must be straightforward, and they 
 should be selected with prejudgments and human error in mind.
We define data collection methods used in systematic reviews, including data 
 extraction directly from journal articles and other case study reports.
Different  
Sources of Data 1. Journal articles are the bulk of data in 
 systematic reviews that comes from  
this source.
It's worth noting that a thesis can be  p
ublished in many journal papers, each  
reporting on a different part of the  
research (e.g. design, main results, and  
other results).
2. Abstracts from conferences are widely 
 accessible.
Contd...
On the other hand, conferencing
abstracts are extremely subjective in  
terms of efficiency, precision, and level 
 of description.
3. Errata and letters will provide valuable  
knowledge about experiments, such as  
critical flaws and retractions, and research 
 reviewers can investigate them where  
they are found.
4. Trials registers keep track of studies that 
 have been designed or begun.
Contd...

They've become a valuable resource  
for locating experiments, matching  
reported outcomes and effects to those  
expected, and collecting feasibility and  
safety evidence that isn't readily  
accessible elsewhere.
5. Clinical research reports (CSRs) are  
unabridged and concise accounts of the  
clinical challenge, nature, behaviour, and 
 outcomes of clinical trials that meet the  
International Conference on
Harmonisation's format and content  
guidelines (ICH).
Contd...
Pharmaceutical firms apply CSRs and 
 other required documents to regulatory  
authorities to secure marketing  
clearance for medications and biologics  
for a particular indication.
6. Regulatory reviews, such as those  
obtainable from the US Food and Drug  
Administration or the European  
Medicines Agency, may offer invaluable 
 information about drug, biologic, and  
medical product trials applied for  
marketing approval by manufacturers.
Contd...
These papers are summaries of CSRs  
and associated documents prepared by  
agency personnel as part of authorising  
goods for sale after a reanalysis of the  
initial trial results.
7. Individual participant data (IPD) is  
normally requested directly from the  
study's researchers, or it can be found in 
 open data repositories.
Variables that reflect each participant's  
profile, intervention (or exposure)  
population, prognostic factors, and  
outcome metrics are usually included  
in these data.
Data  
I. EXCEL Extraction 
Excel is the essential device for managing the   Tools
screening and information extraction phases of the  
systematic review measure.
We can design customised workbooks and  
spreadsheets for systematic review.
A further developed way to utilise Excel for this  
object is the PIECES approach, planned by a  
librarian at Texas A&M.
Contd...
ii. Covidence
Covidence is software built explicitly for dealing with each progression
of a  systematic review project, including data extraction.
iii. RevMan
RevMan is free software used to oversee Cochrane surveys.
For more data on RevMan, including clarifying how it could be
utilised to  extricate and examine information.
Contd...
iv. SRDR
SRDR (Systematic Review Data Repository) is a Web-based tool for extracting 
 and managing data for systematic review.
It is additionally an open and accessible document of a systematic review and 
 their information.
v. DistillerSR
DistillerSR is a systematic review management program.
It guides the reviewer in making project-explicit structures, separating,
and  examining information.
Conclusion
A systematic review article is not conceivable without a  
decent literature search.
The writing search has its principles that, for the most  
part, apply to both unique and review examines.
A detailed review includes a literature search method  
guided by keeping an accurate and straightforward  
record of the whole cycle.
It is valuable to outline an Excel table where the choice  
measures will record references of studies.
Contd...
This will assist the reviewer with understanding the  
methodology, and the outcomes got.
If any inquiries ought to emerge, this proof will make it  
simple to discredit and clarify any doubts about the cycle 
 or the outcomes.
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