Almost half of people on the inpatient waiting list and day services at University Hospital Letterkenny chose to have their treatment in another location last year when given the option.
A total of 1,485 such patients were given the option to have their procedures elsewhere.
Of those offered this choice, a total of 609 accepted the offer.
Details of the treatment offer were given to county councillor Gerry Crawford at yesterday’s meeting of the Western Regional Health Forum.