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Related Experiment Video

Updated: Jun 24, 2025

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities
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Development and initial psychometric properties of the Research Complexity Index.

Allison A Norful1, Bernadette Capili2, Christine Kovner3

  • 1Columbia University School of Nursing, New York, NY, USA.

Journal of Clinical and Translational Science
|June 5, 2024
PubMed
Summary

A new instrument, the Research Complexity Index, was developed to measure clinical study complexity. Initial testing shows it has validity and fair reliability, aiding resource planning.

Keywords:
Clinical researchinstrumentationpsychometricresearch designworkload

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Area of Science:

  • Clinical research methodology
  • Health services research

Background:

  • Research study complexity, influenced by factors like intervention type and design, necessitates significant resources and expertise.
  • Existing instruments for measuring study complexity across diverse research designs are limited.
  • Accurate assessment of study complexity is crucial for effective resource allocation and trial management.

Purpose of the Study:

  • To develop and establish the initial psychometric properties of an instrument designed to scale research study complexity.
  • To create a tool that can quantify the complexity of research studies.

Main Methods:

  • Developed an instrument (Research Complexity Index) following technical and grammatical principles for clarity.
  • Conducted face, content, and cognitive validity testing using surveys and interviews.
  • Performed pilot testing with 31 participants scoring 25 items across two exemplar protocols.

Main Results:

  • The Research Complexity Index demonstrated face, content, and cognitive validity.
  • Internal consistency reliability (Cronbach's alpha) was 0.586 for Protocol 1 and 0.764 for Protocol 2.
  • Inter-rater reliability was fair (kappa = 0.338).

Conclusions:

  • Initial pilot testing indicates the Research Complexity Index possesses validity and acceptable reliability.
  • Further refinement may enhance the instrument's reliability, providing a comprehensive method for assessing study complexity and resource needs.
  • The tool has the potential to aid in quantifying resources, such as staffing requirements, for research studies.