“…The measurement of inputs and outputs, as well as facility characteristics and environmental factors, are relatively homogenous across studies. Most studies used number of beds [25,27,44,48,49], number of full-time nurses [33,35,40,44,54], or labour price [21,23,38,43,55] as inputs; and used number of resident days [2,32,33,40,55], number of residents [24,25,45,46,47], or case-mix index [20,28,30,31,51] as outputs. The use of inputs in nursing home efficiency measurement is similar to the input measures in hospital literature; i.e., number of beds, labour inputs such as doctors or nurses, or input prices [9,58].…”