a significant trendp < 0.001
There was a significant trend towards higher ISS in the HEMS group compared EMS in the cohort overall, as well as within each separate injury severity group (p < 0.001) (Fig. 3 , Table 1 ).
There was a significant trend towards higher ISS in the HEMS group compared EMS in the cohort overall, as well as within each separate injury severity group (p < 0.001) (Fig. 3 , Table 1 ).