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Receiver-operating characteristics analysis based on pretreatment LDH serum levels. Receiver-operating characteristic (ROC) analysis based on pretreatment LDH serum levels results with OS as end point. In this model, sensitivity was 66.7% (95% CI: 40.7–82.8) and specificity was 67.3% (95% CI: 71.9–93.1). The area under the curve was 0.610, P=0.0942. A full colour version of this figure is available at the British Journal of Cancer journal online.
