NHS also changed to require not only actual patient harm but also the potential for significant actual harm. Annual counts have therefore increased, and comparing recent with older data is misleading. The definition continues to undergo more minor change. A provisional report for the 10 month period April 1st 2017 to 31st Jan 2018 acknowledged 393 never events within NHS England, including 172 wrong site surgeries, 97 retained foreign body post procedures, 60 wrong implants/prostheses and 31 medication administration errors. Recommended actions following a never event The Leapfrog Group suggested four actions to be taken following a never event: Apologize to the patient Report the event Perform a root cause analysis Waive costs directly related to the event See also Hospital-acquired condition Sentinel event References Medical terminology Medical error Social problems in medicine