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Standardizing Clinical Trials Workflow Representation in UML for International Site Comparison

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  • Elias Cesar Araujo de Carvalho
  • Madhav Kishore Jayanti
  • Adelia Portero Batilana
  • Andreia M O Kozan
  • Maria J Rodrigues
  • Jatin Shah
  • Marco R Loures
  • Sunita Patil
  • Philip Payne
  • Ricardo Pietrobon

Abstract

Background: With the globalization of clinical trials, a growing emphasis has been placed on the standardization of the workflow in order to ensure the reproducibility and reliability of the overall trial. Despite the importance of workflow evaluation, to our knowledge no previous studies have attempted to adapt existing modeling languages to standardize the representation of clinical trials. Unified Modeling Language (UML) is a computational language that can be used to model operational workflow, and a UML profile can be developed to standardize UML models within a given domain. This paper's objective is to develop a UML profile to extend the UML Activity Diagram schema into the clinical trials domain, defining a standard representation for clinical trial workflow diagrams in UML. Methods: Two Brazilian clinical trial sites in rheumatology and oncology were examined to model their workflow and collect time-motion data. UML modeling was conducted in Eclipse, and a UML profile was developed to incorporate information used in discrete event simulation software. Results: Ethnographic observation revealed bottlenecks in workflow: these included tasks requiring full commitment of CRCs, transferring notes from paper to computers, deviations from standard operating procedures, and conflicts between different IT systems. Time-motion analysis revealed that nurses' activities took up the most time in the workflow and contained a high frequency of shorter duration activities. Administrative assistants performed more activities near the beginning and end of the workflow. Overall, clinical trial tasks had a greater frequency than clinic routines or other general activities. Conclusions: This paper describes a method for modeling clinical trial workflow in UML and standardizing these workflow diagrams through a UML profile. In the increasingly global environment of clinical trials, the standardization of workflow modeling is a necessary precursor to conducting a comparative analysis of international clinical trials workflows.

Suggested Citation

  • Elias Cesar Araujo de Carvalho & Madhav Kishore Jayanti & Adelia Portero Batilana & Andreia M O Kozan & Maria J Rodrigues & Jatin Shah & Marco R Loures & Sunita Patil & Philip Payne & Ricardo Pietrobo, 2010. "Standardizing Clinical Trials Workflow Representation in UML for International Site Comparison," PLOS ONE, Public Library of Science, vol. 5(11), pages 1-8, November.
    • Handle: RePEc:plo:pone00:0013893
    DOI: 10.1371/journal.pone.0013893
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    1. Reijers, H. A. & Liman Mansar, S., 2005. "Best practices in business process redesign: an overview and qualitative evaluation of successful redesign heuristics," Omega, Elsevier, vol. 33(4), pages 283-306, August.
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