While not a scientific study, well worthwhile to read:

https://www.urbanfitandfearless.com/2016/09/self-defence-against-knife-attacks.html?m=1&fbclid=IwAR3BXenMiD1w4g600RdApD1xvg1Dr-MSuARTcYfmT3vgAN2-jj7vZ-rxADE

In the past I have always taught knife defense with the wea