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Related Experiment Video

Updated: Jan 26, 2026

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
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Optimising recruitment into trials using an internal pilot.

W Bertram1,2, A Moore3, V Wylde3,4

  • 1Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Level 1, Learning & Research Building, Southmead Hospital, Bristol, BS10 5NB, UK. Wendy.Bertram@bristol.ac.uk.

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Summary

Improving clinical trial recruitment is crucial. This study used a pilot phase with qualitative research to refine recruitment strategies and develop a projection tool, aiding other trials in meeting sample size targets.

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Area of Science:

  • Clinical trial management
  • Health services research

Background:

  • Clinical trial recruitment often faces challenges, leading to delays and funding issues.
  • Many trials struggle to meet participant recruitment targets despite planning.

Purpose of the Study:

  • To describe a trial utilizing an internal pilot with embedded qualitative research to enhance recruitment.
  • To inform recruitment projections for the main trial based on pilot findings.

Main Methods:

  • An internal pilot study incorporated qualitative research to optimize recruitment processes.
  • Adjustments to recruitment were made using qualitative data and patient group advice.
  • Additional sites were added based on feasibility, and a projection equation was developed.

Main Results:

  • Qualitative insights informed strategies for patient information, standard operating procedures, and recruiter training.
  • A checklist for feasibility assessments was created.
  • A four-stage projection equation was developed to estimate recruitment rates.

Conclusions:

  • The study offers recommendations for feasibility assessments in clinical trials.
  • An accessible projection tool is provided to assist trials in achieving required sample sizes.