According to the US Census Bureau 2012, the annual revenue total of the healthcare industry is $1.668 Trillion. There are 5,724 registered hospitals in the US (American Hospital Association). Each one is estimated to be worth between $100-500m in terms of total asset value (building, staff, and equipment).
In the 2012 Hospital Security Summary, 25% of respondents reported an overall increase in attacks and assaults compared with more than 7% reporting a decrease; 34% reported an increase in patient/family violence against emergency department staff, while 7% report a drop.
