Table 1. Specifications of the DEA models.

Model	Focus	Inputs	Outputs	Orientation	Research question
A	Staffing	• Number of physicians per 10 beds;	• SMR	Input	Given a certain performance in terms of SMR and SRU, how much lower should the staffing proportion be?
			• SRU
		• Number of nurses per 10 beds;
		• Number of nursing technicians per 10 beds;
		• Number of physiotherapists per 10 beds.
B	Structure	• Number of ICU beds;	• SMR	Output	Given a certain structure in terms of beds and volume of professionals, how much lower should the SMR and SRU be?
		• Total physicians’ hours per week;	• SRU
		• Total nurses’ hours per week.
C	Capacity	• Bed Occupancy Rate	• SMR	Input	Given a certain performance in terms of SMR and SRU, how much higher should the occupancy rate be?
			• SRU