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Background <p>Exploring barriers and enablers to participant recruitment into trials is a common discussion point in trial methodology. Participant information leaflets (PIL) can be long, have complexity above the average UK reading age, and may discourage engagement with research.</p> <p>This Study Within a Trial (SWAT) explored whether changing the design of a PIL influences recruitment rate and its value in patient decision-making. It was conducted within a host trial taking place in an emergency setting, where time is at a premium, and decisions on trial participation are needed more quickly than in most non-emergency settings.</p> Methods <p>We have conducted a randomised SWAT, comparing the standard format PIL with one that has been adapted to be visually appealing, with improved readability and reduced word count. Patients considered eligible for the host trial were provided with a randomly allocated PIL type; consent rates were compared. Those consenting to take part in the host trial were asked to complete a questionnaire to explore the value of the PIL in their decision-making to take part in the trial; responses were compared across the two information sheets. The sample size was dictated by host trial recruitment.</p> Results <p>Between September 2019 and September 2022, with a brief pause during the COVID19 pandemic, 271 participants were randomised to receive either the optimised PIL (<i>n</i> = 138) or the conventional PIL (<i>n</i> = 133). The recruitment rates were 47.1% (65/138) in the optimised PIL group and 48.9% (65/133) in the conventional PIL group; this difference was not statistically significant (<i>p</i> = 0.771). There were no significant differences in responses from participants recruited to the host trial who completed the Decision-Making Questionnaire.</p> Conclusion <p>Improving the readability and visual presentation of the participant information sheet provided to participants had no effect on recruitment rate, and did not appear to impact decision-making of recruited participants.</p>

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A randomised Study Within a Trial (SWAT) to determine if participant information leaflet design affects recruitment rate into an interventional trial taking place in a UK emergency department

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  • 发表日期：

    2026年2月6日

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  • Rachelle Sherman,
  • Andrew Tabner,
  • Apostolos Fakis,
  • Adwoa Parker,
  • Graham Johnson

摘要

Background

Exploring barriers and enablers to participant recruitment into trials is a common discussion point in trial methodology. Participant information leaflets (PIL) can be long, have complexity above the average UK reading age, and may discourage engagement with research.

This Study Within a Trial (SWAT) explored whether changing the design of a PIL influences recruitment rate and its value in patient decision-making. It was conducted within a host trial taking place in an emergency setting, where time is at a premium, and decisions on trial participation are needed more quickly than in most non-emergency settings.

Methods

We have conducted a randomised SWAT, comparing the standard format PIL with one that has been adapted to be visually appealing, with improved readability and reduced word count. Patients considered eligible for the host trial were provided with a randomly allocated PIL type; consent rates were compared. Those consenting to take part in the host trial were asked to complete a questionnaire to explore the value of the PIL in their decision-making to take part in the trial; responses were compared across the two information sheets. The sample size was dictated by host trial recruitment.

Results

Between September 2019 and September 2022, with a brief pause during the COVID19 pandemic, 271 participants were randomised to receive either the optimised PIL (n = 138) or the conventional PIL (n = 133). The recruitment rates were 47.1% (65/138) in the optimised PIL group and 48.9% (65/133) in the conventional PIL group; this difference was not statistically significant (p = 0.771). There were no significant differences in responses from participants recruited to the host trial who completed the Decision-Making Questionnaire.

Conclusion

Improving the readability and visual presentation of the participant information sheet provided to participants had no effect on recruitment rate, and did not appear to impact decision-making of recruited participants.