Table 2

Injury risk comparisons between different zones of workload (<15th, 15–50th, 50–85th, >85th centiles)

MarkerWorkload zonesNumber of non-contact injuriesRelative risk (RR)
(95% CI)
Qualitative term for clinical inferenceChances (%) the effect is beneficial/trivial/harmful
Acute:chronic 1:4<0.60 (reference)12
0.60 to 0.97240.88 (0.44 to 1.73)Unclear54/22/25
0.97 to 1.38401.47 (0.78 to 2.78)Likely harmful7/13/81
>1.38221.86 (0.93 to 3.72)Likely harmful2/5/93
0.60 to 0.97 (reference) 24
0.97 to 1.38401.68 (1.02 to 2.78)Likely harmful1/4/95
>1.38222.13 (1.20 to 3.77)Very likely harmful0/1/99
0.97 to 1.38 (reference)40
>1.38221.27 (0.76 to 2.11)Possibly harmful10/19/71
Acute:chronic 1:3<0.59 (reference)15
0.59 to 0.97260.77 (0.41 to 1.44)Unclear69/18/13
0.97 to 1.42391.17 (0.65 to 2.11)Possibly harmful19/23/58
>1.42211.47 (0.76 to 2.82)Likely harmful8/11/81
0.59 to 0.97 (reference)26
0.97 to 1.42391.52 (0.92 to 2.48)Likely harmful2/8/90
>1.42211.90 (1.08 to 3.36)Very likely harmful0/3/97
0.97 to 1.42 (reference)39
>1.42211.25 (0.74 to 2.11)Possibly harmful11/21/68