Table 3 The SD and double difference value of hospitalization expenses of patients (CNY)
| Â | Control Group | Intervention Group | Double-Difference Value | ||
|---|---|---|---|---|---|
SD | Change | SD | Change | ||
COPD | |||||
 Before (FFS payment only) | |||||
  2010 | 17536.87 | —— | 22798.05 | —— | —— |
  2011 | 15337.87 | -2199.00 | 17587.92 | -5210.13 | -3011.13 |
 After (DRG payment in pilot hospitals) | |||||
  2012 | 10215.21 | -5122.67 | 6493.26 | -11094.66 | -5971.99 |
  2013 | 7037.40 | -3177.81 | 5778.24 | -715.02 | 2462.78 |
  2014 | 9009.47 | 1972.07 | 5789.14 | 10.91 | -1961.16 |
  2015 | 13955.59 | 4946.12 | 6538.47 | 749.32 | -4196.79 |
AMI | |||||
 Before (FFS payment only) | |||||
  2010 | 28310.83 | —— | 26213.95 | —— | —— |
  2011 | 27514.44 | -796.39 | 24327.57 | -1886.38 | -1089.99 |
 After (DRG payment in pilot hospitals) | |||||
  2012 | 25165.85 | -2348.59 | 19495.07 | -4832.50 | -2483.91 |
  2013 | 26146.35 | 980.50 | 16363.33 | -3131.73 | -4112.24 |
  2014 | 26776.27 | 629.92 | 18002.29 | 1638.96 | 1009.04 |
  2015 | 28379.07 | 1602.80 | 18546.57 | 544.28 | -1058.52 |
  2016 | 28120.67 | -258.40 | 20323.44 | 1776.87 | 2035.27 |
CI | |||||
 Before (FFS payment only) | |||||
  2011 | 15755.92 | —— | 13571.37 | —— | —— |
 After (DRG payment in pilot hospitals) | |||||
  2012 | 13612.52 | -2143.39 | 8583.88 | -4987.49 | -2844.09 |
  2013 | 16126.07 | 2513.55 | 8159.43 | -424.45 | -2938.00 |
  2014 | 11558.56 | -4567.51 | 6681.67 | -1477.76 | 3089.75 |
  2015 | 12238.64 | 680.08 | 6076.18 | -605.49 | -1285.56 |
  2016 | 14112.71 | 1874.07 | 5967.37 | -108.82 | -1982.89 |