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

Table 4

Efficiency evaluation of 30 regions in China.

DMU	Region	Stage1	Stage 2	Overall
		Production	Waste disposal
1	Beijing	1	0.274881	0.63744
2	Tianjin	1	0.359507	0.679754
3	Hebei	1	0.379613	0.689806
4	Shanghai	1	0.217759	0.60888
5	Jiangsu	1	0.485474	0.742737
6	Zhejiang	1	1	1
7	Fujian	1	0.204793	0.602396
8	Shandong	1	0.351821	0.675911
9	Guangdong	1	0.173473	0.586736
10	Hainan	1	1	1
11	Shanxi	1	0.261725	0.630862
12	Anhui	0.626949	0.405016	0.515982
13	Jiangxi	1	0.495416	0.747708
14	Henan	1	0.266204	0.633101
15	Hubei	0.558534	0.409545	0.48404
16	Hunan	1	0.477065	0.738532
17	Inner Mongolia	1	0.250804	0.625402
18	Guangxi	1	0.358622	0.679311
19	Chongqing	0.615311	0.334625	0.474968
20	Sichuan	0.623692	0.241739	0.432715
21	Guizhou	1	0.407038	0.703519
22	Yunnan	1	1	1
23	Shaanxi	0.584079	0.27353	0.428804
24	Gansu	0.540044	0.56527	0.552656
25	Qinghai	0.658815	0.512974	0.585894
26	Ningxia	1	0.370418	0.685209
27	Xinjiang	0.544786	0.414857	0.479822
28	Liaoning	1	0.161266	0.580633
29	Jilin	0.636337	0.454661	0.545499
30	Heilongjiang	0.549241	0.374855	0.462048
Mean		0.864593	0.416098	0.640346