You can't read the whole article without a subscription, but here's the abstract (CED = taser, to you and me):
The Conducted Energy Device (CED) weapon holds the potential to reduce injuries for officers/suspects. However, the dearth of research on CEDs makes it difficult to make informed decisions about its deployment. We conducted a quasi experiment to compare 4 years of data from seven law enforcement agencies (LEAs) with CED deployment with six matched LEAs without CED deployment. Compared with non-CED sites, CED sites had lower rates of officer injuries, suspect severe injuries, and officers and suspects receiving injuries requiring medical attention. Our results suggest that CEDs can be effective in helping minimize physical struggles and resulting injuries in use-of-force cases.