Mr. Tony O'Brien:

The delta response relates largely to incidents such as chest pain, suspected stroke, a choking incident or a loss of consciousness but where the person is still thought to be breathing. This is an international ambulance emergency dispatch coding system. These represent the great majority of calls where we see ambulances arriving at high speed with blue lights or emergency response vehicles. Due to an international change in classification slightly more calls now go into that category than used to be the case. This is a greater number of calls with roughly the same number of ambulances, therefore there has been a negative impact on the percentage compliance with that target.