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Fig. 2 | BMC Medicine

Fig. 2

From: Is there an added value of faecal calprotectin and haemoglobin in the diagnostic work-up for primary care patients suspected of significant colorectal disease? A cross-sectional diagnostic study

Fig. 2

Receiver operating characteristic curves for diagnosing SCD for the basic diagnostic model, and the POC FIT and the calprotectin POC test extended models. FIT faecal immunochemical test for haemoglobin; POC point-of-care; SCD significant colorectal disease. Areas under the curve (before optimism-correction): basic model 0.741 (95 % CI, 0.694–0.789); calprotectin POC test extended 0.763 (95 % CI, 0.718–0.809); POC FIT extended 0.831 (95 % CI, 0.791–0.872); Both faecal POC tests extended 0.837 (95 % CI, 0.798–0.876). Dashed line is reference line

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