Development, validation and effectiveness of diagnostic prediction tools for colorectal cancer in primary care: a systematic review.
Bogdan GrigoreRuth LewisJaime PetersSophie RobinsonChristopher J HydePublished in: BMC cancer (2020)
Many prediction models have been developed but none have been fully validated. Evidence demonstrating improved patient outcome of introducing the tools is the main deficiency and is essential given the imperfect classification achieved by all tools. This need is emphasised by the equivocal results of the small number of impact studies done so far.