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Methodological quality assessment should move beyond design specificity.

Jennifer C Stone1,2, Kathryn Glass3, Merel Ritskes-Hoitinga4,5

  • 1Department of Health Services Research and Policy, Research School of Population Health, Australian National University, Canberra, ACT, Australia.

JBI Evidence Synthesis
|January 23, 2023
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Summary
This summary is machine-generated.

The unified MASTER scale offers comprehensive bias assessment for analytic studies, covering more safeguards than individual JBI, SIGN, and NOS tools. This unified approach enhances methodological quality assessment in evidence synthesis.

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Area of Science:

  • Methodology
  • Evidence Synthesis
  • Bias Assessment

Background:

  • Methodological quality assessment is crucial for evidence synthesis.
  • Existing tools for bias assessment, such as JBI, SIGN, and NOS, are design-specific.
  • A unified tool could streamline bias assessment across different analytic study designs.

Purpose of the Study:

  • To evaluate the utility of the unified MASTER scale for bias assessment.
  • To compare the content and coverage of the MASTER scale against design-specific tools (JBI, SIGN, NOS).

Main Methods:

  • Safeguards from JBI, SIGN, and NOS tools were mapped to the unified MASTER scale.
  • Unmapped safeguards and duplicates were identified and described.
  • Coverage and content of the MASTER scale were compared to the design-specific tools.

Main Results:

  • A significant overlap in safeguards was found across JBI, SIGN, and NOS tools.
  • The MASTER scale demonstrated complete coverage of safeguards present in the three design-specific toolsets.
  • The design-specific toolsets collectively missed 14 to 26 safeguards covered by the MASTER scale.

Conclusions:

  • The MASTER scale provides a unified, convenient framework for bias assessment in analytic studies.
  • It offers superior coverage, reduced duplication, and less redundancy compared to design-specific tools.
  • The MASTER scale facilitates cross-design bias assessment, which is not possible with individual tools.