Fig. 2From: The effectiveness of ultrasound in the detection of fractures in adults with suspected upper or lower limb injury: a systematic review and subgroup meta-analysisRisk of bias chart. Levels of bias across the 4 domains used by the Cochrane Handbook to establish internal validity [15]. The risk of bias chart summarises the overall bias of all studies, and any applicability concerns (right side of diagram). Figures constructed using Review ManagerBack to article page