Size matters: analyzing bank profitability and efficiency under the Basel III framework

Financial Innovation

Table 6 Relative efficiency of banks by size categorization and time

Relative efficiencies (efficiency scores)	Years	Mean	Median	Std. dev	Minimum	Maximum
All banks (EFF_A)
	2006	0.87	0.89	0.08	0.58	0.99
	2007	0.85	0.87	0.10	0.51	0.99
	2008	0.62	0.62	0.12	0.25	0.91
	2009	0.7	0.71	0.10	0.39	0.93
	2010	0.72	0.72	0.10	0.47	0.96
	2011	0.83	0.84	0.08	0.54	0.96
	2012	0.76	0.76	0.10	0.42	0.96
	2013	0.73	0.73	0.11	0.35	0.95
	2014	0.93	0.95	0.07	0.62	1
	2015	0.92	0.94	0.07	0.67	1
Medium and large banks only (EFF_LM)
	2006	0.82	0.84	0.07	0.56	0.93
	2007	0.80	0.81	0.10	0.51	0.99
	2008	0.67	0.68	0.11	0.37	0.91
	2009	0.72	0.74	0.09	0.42	0.92
	2010	0.76	0.77	0.10	0.52	0.96
	2011	0.79	0.82	0.08	0.54	0.97
	2012	0.81	0.83	0.10	0.53	0.98
	2013	0.81	0.83	0.09	0.45	0.97
	2014	0.90	0.91	0.07	0.62	1
	2015	0.88	0.90	0.07	0.66	1
Small banks only (EFF_S)
	2006	0.88	0.90	0.06	0.65	0.96
	2007	0.73	0.75	0.09	0.51	0.90
	2008	0.73	0.74	0.11	0.30	0.93
	2009	0.74	0.75	0.11	0.44	0.95
	2010	0.73	0.73	0.12	0.46	0.94
	2011	0.71	0.73	0.10	0.39	0.90
	2012	0.79	0.81	0.09	0.52	0.96
	2013	0.84	0.86	0.09	0.40	0.98
	2014	0.76	0.79	0.09	0.43	0.91
	2015	0.70	0.72	0.11	0.33	0.87

Source: Authors calculations
The total dataset consists of 433 banks for the 10-years period, which is equal to 4330 observations for every variable. When considering large and medium banks only there are 2810 observations for large and medium sized banks, and 1520 for small banks