Evidence from: Managing Injuries of the Neck Trial (MINT): a randomised controlled trial of treatments for whiplash injuries. Health Technol Assess 2012;16(49). People were diagnosed at ED assessment with whiplash grade I to III. They were randomised to receive the Whiplash Book (developed for an ABI evidence-based guidance project) and or a combination of physiotherapy or neither. 18% went on the have persistent whiplash. Overall, there was no measurable effect of any intervention at 12 months. Those still in trouble at 3 weeks post accident did benefit very marginally at 4 months. Having assessed the cost, the authors concluded that: from a healthcare perspective, the physiotherapy package was not cost-effective at current levels of willingness to pay Comment: The medical test of benefit and the medical test of cost effectiveness are both more generous than would be expected at common law; where the balance of probabilities is used to judge facts. Applying the common law standard, th