A - 18 Sport Concussion Assessment Tool-5th Edition (SCAT5) Normative Reference Values for Professional Men's Rugby League Players.

This article focuses on establishing normative reference values for the Sport Concussion Assessment Tool–5th Edition (SCAT5) in professional men’s National Rugby League (NRL) players in Australia. Baseline SCAT5 data were collected from 1,005 players during the 2018 and 2019 seasons, including self-identified cultural groups: Pasifika or Māori (24.2%), Indigenous Australian (8.2%), and others (67.7%). The study found no significant differences in SCAT5 scores—including the Standardized Assessment of Concussion (SAC), symptom evaluation, and Modified Balance Error Scoring System (mBESS)—across these groups. Median scores indicated that certain ranges of SAC and mBESS scores, as well as symptom counts and severity, were typical or uncommon within this elite athlete population. These normative values provide a reference for concussion assessment in professional men’s rugby league players.