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A Scale for Evaluating the Methodological Quality of Studies Based on Observational Methodology
Susana Sanduvete-Chaves1, Daniel López-Arenas1, M Teresa Anguera2
1Universidad de Sevilla (Spain)
Psicothema
|January 22, 2025
Summary
The Methodological Quality Scale for Studies based on Observational Methodology (MQSOM) demonstrates validity for assessing observational studies. This scale provides reliable and structured evaluation of methodological quality in research.
Area of Science:
- Methodology
- Research Quality Assessment
Background:
- No existing scales validated for methodological quality of studies based on observational methodology (SBOM).
- This study addresses the need for a valid instrument to assess SBOM quality.
Purpose of the Study:
- To present validity evidence for the Methodological Quality Scale for Studies based on Observational Methodology (MQSOM).
- To evaluate the internal structure of the MQSOM scale.
Main Methods:
- Applied MQSOM to 650 observational studies.
- Calculated Intraclass Correlation Coefficient (ICC) for reliability.
- Conducted parallel analysis, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA).
Main Results:
- Adequate inter- and intra-coder reliability (ICC > .73).
- Parallel analysis indicated a lack of unidimensionality.
- A second-order factor structure with two first-order factors (Design, Measurement and Analysis) was identified with excellent fit indices (RMSEA=0.000, NNFI=1, GFI=0.98, AGFI=0.97).
Conclusions:
- MQSOM is a valid and reliable 11-item instrument.
- The scale is useful for professionals, researchers, and commissions evaluating SBOM.
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