A Network DEA Model with Super Efficiency and Undesirable Outputs: An Application to Bank Efficiency in China

Table 6

Pooled descriptive statistics of variables.

Variable	Mean	Std. Dev.	Min.	Max.	Unit
Overall efficiency	61.080	22.790	26.400	150.700	%
Efficiency of stage 1	75.170	18.610	36.100	119.900	%
Efficiency of stage 2	80.250	15.500	32.300	150.700	%
netloan_ta	50.900	9.355	31.420	83.250	%
liqassets_stfund	32.840	9.551	10.930	56.970	%
net_int_margin	2.671	0.766	1.110	6.112	%
sharehold	0.270	0.445	0.000	1.000
list	0.341	0.475	0.000	1.000
ta	261151.000	550026.000	1592.000	2789000.000	Million $
g_gdp	9.260	0.845	7.800	10.400	%
g_m2	18.530	5.157	13.610	27.680	%
hhi_gross_loan	0.098	0.007	0.091	0.111