Fig. 3From: Broad external validation of a multivariable risk prediction model for gastrointestinal malignancy in iron deficiency anaemiaDecision curve analysis for GI investigation using Dorset data. Grey line: penalised IDIOM model. Black line: investigate no-one strategy. Dashed line: investigate all strategy. The vertical axis displays standardised net benefit. The horizontal axis shows the risk thresholdsBack to article page