No of studies (design) limitations inconsistency indirectness Imprecision Publication bias Control/ pre-intervention: Average injury numbers (Range of total injury numbers) Test/ post-intervention: Average injury numbers (Range of injury numbers) Quality   Comprehensive medical provision 3 (observational) serious limitations no serious inconsistency no serious indirectness detected serious imprecision likely 137 (137) 106 (96-128)* very low

* representing/over  4 years

Table 4: Evidence Profile - Injury Reduction (injury numbers).