The number of missed out-patient appointments in England in 2005-06 was 5,582,315 or 11 per cent. of all national health service out-patient appointments. Data for individual trusts have been placed in the Library. The Department has not estimated the cost of missed appointments. The choose and book system can be used to help reduce the number of missed appointments by giving patients greater certainty and choice over the date, time and place of their appointments.