How does the likelihood of a call during an overnight on-call shift affect sleep and next day cognitive performance in a laboratory environment?

On-call is a type of work which is undertaken by many Australians in a variety of different work settings (e.g. medicine, emergency response). However, to date there is little research on the impact of being on-call on sleep and next day performance when no call occurs. Previous research has indicated that the stress and anxiety associated with being on-call may result in decreases in both sleep quality and duration, which may, in turn, impact next day performance.