Table 1 Comparison of total hospital expenditure and length of stay (−x ± s)
Grouping and power test | Total hospital expenditure($) | Length of stay(day) |
|---|---|---|
Control group | ||
2010 | 965.86 ± 299.06 | 9.777 ± 1.718 |
2011 | 915.93 ± 201.91 | 9.581 ± 2.407 |
2012 | 896.88 ± 281.15 | 10.185 ± 2.647 |
subtotal | 919.08 ± 274.92 | 9.960 ± 2.390 |
Experimental group | ||
2013 | 794.66 ± 206.12 | 8.571 ± 1.826 |
2014 | 833.76 ± 191.09 | 8.861 ± 1.986 |
2015 | 948.96 ± 563.89 | 8.857 ± 1.590 |
subtotal | 834.91 ± 225.29 | 8.830 ± 1.950 |
Power test (subtotal for control vs. experiment group) | ||
t | 5.537 | 8.581 |
P | < 0.01 | < 0.01 |