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  • Academic publication
  • 20th Oct 2015

Stating Appointment Costs in SMS Reminders Reduces Missed Hospital Appointments: Findings from Two Randomised Controlled Trials


Missed hospital appointments are a major cause of inefficiency worldwide. Healthcare providers are increasingly using Short Message Service reminders to reduce ‘Did Not Attend’ (DNA) rates. Systematic reviews show that sending such reminders is effective, but there is no evidence on whether their impact is affected by their content. Accordingly, we undertook two randomised controlled trials that tested the impact of rephrasing appointment reminders on DNA rates in the United Kingdom.


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Dr Michael Hallsworth

Managing Director, BIT Americas

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Dan Berry

Michael Sanders

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Anna Sallis

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Dominic King

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Ivo Vlaev

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Ara Darzi