Number of people expected (staff, audience and participants), including the maximum licenced capacity
Nature of the event (music festival with a young audience, alcohol, overnight camping)
History of event (the reality of the risk, number of patients, attendance, safety concerns etc)
What safeguarding arrangements are in place? Welfare, lost children services on site?
Welfare facilities provided, what levels of cover, provided by whom, at what times?
Hazards - what may cause severe illness or injury
Likelihood of high acuity (requires higher level of clinical care - paramedic/doctor) presentations
Examples include; heart attacks