How to choose a review type
Use caseA literature review, a systematic review, a scoping review, and a meta-analysis answer different questions.
What do I actually do?
Use a literature review to map a field. Use a systematic review when you will name the search, the screen, and the exclude reasons. Use a scoping review to map what exists before you narrow the question. Use a meta-analysis only when the included studies report numbers you can combine. Do not call a narrative summary a meta-analysis.
What are the steps?
- Name the decision. Do you need a map, a reproducible screen, or a combined number?
- Write the search rule. A systematic review names the databases and the date. A literature review may not.
- Write the exclude rule. If you cannot say why a paper is out, you are not running a systematic review.
- Stop at the number. Combine results only when the outcomes are the same measure. Otherwise stop at the table.
What does ScholarIQ do at this step?
ScholarIQ keeps the search and the screen. It does not compute a pooled effect. If you need a meta-analysis, export the table and run the statistics elsewhere.
How long does this take for one person?
Count the records first. A literature review, a systematic review, a scoping review, and a meta-analysis answer different questions. The time follows the count, not the size of a team.
What do I write down before I stop?
The rule, the date, and the count. Use a literature review to map a field. Use a systematic review when you will name the search, the screen, and the exclude reasons. Use a scoping review to map what exists before you narrow the question. Use a meta-analysis only when the included studies report numbers you can combine. Do not call a narrative summary a meta-analysis.
Do I need a second reviewer?
Not to start. ScholarIQ does not score a second reviewer. If the protocol asks for dual review, a second person sees the same record.
What is the usual error?
A file with no reason. Use a literature review to map a field. Use a systematic review when you will name the search, the screen, and the exclude reasons. Use a scoping review to map what exists before you narrow the question. Use a meta-analysis only when the included studies report numbers you can combine. Do not call a narrative summary a meta-analysis.
How do I know this step is done?
The count matches the records. If a flow-diagram box would not match, the step is not done.
What goes in the methods?
The rule, the date, and the count. A reader must be able to open the same record.
Can I skip this step?
No, if you will call the work a systematic review. If you skip it, write what you did. Do not hide the gap.
What if I cannot finish?
Stop. Write how far you got. Records you did not screen are not exclusions.
What does a supervisor check?
The rule, a sample of decisions, and the passage.
What is outside this step?
A guideline panel, a CRO, and a GRADE meeting. ScholarIQ keeps the search and the screen. It does not compute a pooled effect. If you need a meta-analysis, export the table and run the statistics elsewhere.