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Table 2 Areas under the curve for ferritin, MCV, serum iron, haemoglobin and RDW in the diagnosis of gastrointestinal cancer

From: Ferritin above 100 mcg/L could rule out colon cancer, but not gastric or rectal cancer in patients with involuntary weight loss

  Gastrointestinal cancer Colorectal cancer
  AUC (95% CI) AUC (95% CI)
Ferritin 0.746 (0.691-0.794) 0.765 (0.713-0.813)
MCV 0.627 (0.568-0.684) 0.669 (0.612-0.725)
Serum iron 0.636 (0.571-0.697) 0.650 (0.584-0.710)
Haemoglobin 0.590 (0.530-0.646) 0.552 (0.491-0.609)
RDW 0.541 (0.476-0.602) 0.463 (0.401-0.528)