Primary Study Overlap in Umbrella Reviews, Graphical Representation

A graphical representation of the degree of overlap among primary studies included in systematic reviews that are part of umbrella reviews. The dataset is a 9.5 KB Excel file authored by Mogesie Necho and last updated on April 27, 2026. It is shared under a CC-BY-4.0 license on the figshare platform.

Use Cases

• Visualizing primary study overlap across systematic reviews based on the graphical representation described.
• Assessing redundancy in evidence synthesis for umbrella reviews based on the concept of study overlap.
• Informing methodological guidelines for conducting umbrella reviews based on overlap analysis.
• Teaching meta-research concepts related to evidence synthesis and study selection.

Strengths

• Dataset is openly licensed under CC-BY-4.0, permitting reuse with attribution.
• File size is 9.5 KB, ensuring quick download and easy inspection.
• Last update timestamp is precisely recorded as 2026-04 27 17:29:29.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

figshare

Collection Method

Method of creation is not specified in the provided metadata.

Time Range

Temporal coverage is not specified.

Freshness

Last updated 2026-04-27 17:29:29; freshness should be verified.

Geography

Spatial coverage is not specified.