Evidenced outcome: Evidence of a reduction in Did Not Attend (DNA) rates for General Ultrasound

Evidence point
1.3% reduction in General Ultrasound DNA rates when reminder calls were made vs. when they weren't. Comparison of 15 months when calls were made (33777 appointments) and 15 months when calls weren't (38387 appointments). Difference is statistically significant.
Primary beneficiary
Organisation
Partner organisation
Norfolk and Waveney ICB - Norfolk and Norwich University Hospitals NHS Foundation Trust
Volunteering role / intervention
DNA calls
Evidence strength
Compelling
Produced
January 2026