年度 | 一类切口病案数 | 预防用药例数 | 预防用药使用率 | χ2 | P |
2013 | 915 | 176 | 19.23% | | 0.000 |
2014 | 752 | 25 | 3.32% | 7.528b | 0.000 |
2015 | 852 | 11 | 1.29% | | 0.000 |
2016 | 1008 | 16 | 1.59% | 0.283d | 0.595 |
2017 | 1177 | 24 | 2.04% | 0.617 e | 0.432 |
|
|
|
| | 0.202 |