Mr. Robert Watt:

This is a very live area in research literature. The complexity of care is also a factor. It is very hard for us to measure that, and Dr. Ní Bhriain knows more about this than I do. Let us say there is a higher percentage of attendances or admissions into the hospital system from those over 75, who are frailer, have comorbidity and stay longer. Trying to adjust for that is complicated.