Statistical significance (p value) in PSIs rates between years
| PSI → | PSI 18—obstetric trauma during vaginal delivery with instrument | PSI 19—obstetric trauma during vaginal delivery without instrument | PSI 20—obstetric trauma during caesarean delivery | ||||||
| Year | 2010/2011 | 2011/2012 | 2012/2013 | 2010/2011 | 2011/2012 | 2012/2013 | 2010/2011 | 2011/2012 | 2012/2013 |
| 2011/2012 | 1.000 | 1.000 | 0.429 | ||||||
| 2012/2013 | 0.753 | 0.533 | 0.000* | 0.000* | 0.000* | 0.000* | |||
| 2013/2014 | 0.000* | 0.000* | 0.013 | 0.000* | 0.000* | 0.002* | 0.000* | 0.000* | 1.000 |
*p<0.05
PSI, Patient Safety Indicators.