Which has more concussions, rugby league or union?

This article discusses the prevalence of concussions in two popular forms of rugby: Rugby League and Rugby Union. It was found that Rugby League had a higher rate of concussions than Rugby Union. The results of the study showed that Rugby League had an overall concussion rate of 2.7 per 1,000 exposures, while Rugby Union had a rate of 2.2 per 1,000 exposures. The higher rate of concussions in Rugby League was attributed to the increased physicality and the number of contact situations in the game. The article concluded that more research is needed to understand the reasons behind the higher concussion rate in Rugby League.