Preventing HIV in Young People: A systematic Review of the evidence from Developing countries
Developing a Systematic Review
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Transcript of Developing a Systematic Review
![Page 1: Developing a Systematic Review](https://reader030.fdocuments.us/reader030/viewer/2022012922/56812fcd550346895d954ce0/html5/thumbnails/1.jpg)
Developing a
Systematic Review
Fiona Morgan
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STEP 1
Develop a protocol
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Focused question
PICO/PECO• Population/Problem• Intervention or Exposure• Comparator/Control• Outcome(s)
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And…
• Study design• Languages• Publication status• Years
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STEP 2
Searchthe
Literature
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Search the Literature
• Search a range of relevant databases – Medline, Embase, Cochrane, Cinahl, Web of
Knowledge, ASSIA, PsycINFO, Childdata, Ageline, Social Care Online, Scopus
• Report search terms used– Indexed terms and keywords
• Sufficient range of years
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Search the literature
Snowballing• Key journals
– Hand/e-TOCs searching
• Unpublished research– Experts/Manufacturers/Trial registers
• Non-journal literature – Websites
• Reference lists
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STEP 3
Select studies for Inclusion
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STEP 4
Quality assessment/Risk of bias
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Included studies
• A priori inclusion criteria– Identified in protocol
• Selection– Title and abstract– Full text
• Independently in duplicate– Reduction of error and bias
• Checklist/form
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Quality Assessment
• Identify best available evidence• Detect risk of bias• Completed independently in duplicate
– Reduces error and bias
• Tools– Critical appraisal checklists– Cochrane risk of bias
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STEP 5
Data extraction
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Data extraction
Develop and test form• Clear process• Confirmed understanding
Process:• Independently in duplicate
– Reduces error and bias
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STEP 6Meta-
analysis or
narrative synthesis
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Meta-analysis?
• Needs statistician input– Specify proposed methods in protocol
• Heterogeneity – How significant?
• Narrative synthesis
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Step 7
Present findings
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Present findings
• Balanced and impartial summary• Interpret the results• Contextualise• Identify limitations
And…
disseminate findings
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UsefulResources
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Available via Cardiff University resources as an e-Book
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Available online
http://www.cochrane-handbook.org/