Table 4 The concentration index of hospitalization expenses of patients
Year | COPD | CI | AMI |
|---|---|---|---|
Before (FFS payment only) | |||
 2010 | 0.035 | —— | -0.012 |
 2011 | 0.009 ** | -0.038 | 0.020 |
After (DRG payment in pilot hospitals) | |||
 2012 | -0.045 *** | -0.048 *** | -0.026 *** |
 2013 | -0.044 | -0.067 *** | -0.036 *** |
 2014 | -0.049 ** | -0.067 * | -0.034 |
 2015 | -0.052 | -0.069 *** | -0.045 |
 2016 | -0.030 *** | -0.114 *** | -0.023 |