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Prospective evaluation of the adapted Ontario Protocol Assessment Level score for predicting clinical research
Kesley Holmes1, Muhammed Idris1, Jillian Harvey2
1Clinical Research Center, Morehouse School of Medicine, Atlanta, Georgia, United States of America.
Journal of Clinical and Translational Research
|September 8, 2025
Summary
Accurately estimating research coordinator workload using the Ontario Protocol Assessment Level (OPAL) score aids clinical trial planning. This tool helps align staffing with protocol complexity, especially at under-resourced institutions.
Area of Science:
- Clinical Research Operations
- Health Services Research
Background:
- Increasing clinical trial protocol complexity elevates research coordinator workload, leading to staffing shortages and operational inefficiencies.
- These challenges disproportionately affect under-resourced and minority-serving institutions, potentially limiting trial implementation.
- Accurate estimation of coordinator effort is crucial for effective clinical trial planning, resource allocation, and successful execution.
Purpose of the Study:
- To evaluate the predictive accuracy of an adapted Ontario Protocol Assessment Level (OPAL) score for research coordinator workload.
- To enhance operational planning and resource management in clinical research settings.
Main Methods:
- A 12-month prospective observational study was conducted at a Historically Black College and University medical school.
- Seven research coordinators meticulously recorded hours spent on seven actively enrolling interventional trials.
- Workload estimations using an adapted OPAL reference table were compared against actual recorded hours via descriptive statistics and paired t-tests, applying standardized workday equivalencies.
Main Results:
- No statistically significant difference was observed between estimated and actual coordinator hours (average difference: 24.1 hours, p=0.761).
- The mean absolute error in workload estimation was 167.0 hours, approximately equivalent to one full-time work month.
Conclusions:
- The adapted OPAL score offers a practical method for estimating research coordinator workload and matching staffing levels to protocol demands, even in resource-limited environments.
- Further multi-site validation is necessary to confirm the generalizability of the adapted OPAL score and support its adoption in clinical trial feasibility planning.
Keywords:
Clinical trial operationsCoordinator staffing modelsImplementation scienceOntario Protocol Assessment Level scoreProtocol complexityResearch coordinator workloadWorkforce planningWorkload estimation
