Additive Slack-Based Measure for a Two-Stage Structure with Shared Inputs and Undesirable Feedback

Table 8

Area-wise efficiency evaluation results in the Western area.

Area	DMU	Region	Stage 1	Stage 2	Overall
			Production	Waste disposal
Western area	17	Inner Mongolia	1	0.302466	0.651233
	18	Guangxi	1	1	1
	19	Chongqing	1	1	1
	20	Sichuan	1	1	0.999995
	21	Guizhou	1	0.508518	0.754259
	22	Yunnan	1	1	1
	23	Shaanxi	0.688922	0.410409	0.549665
	24	Gansu	1	1	1
	25	Qinghai	1	1	1
	26	Ningxia	1	0.604252	0.802126
	27	Xinjiang	0.615289	0.614254	0.614771
		Mean	0.936746	0.767264	0.852004