Figure 2. Survival comparison according to interval between diagnosis of iron deficiency anemia (IDA) and colon cancer.

For colon cancer patients with pre-existing IDA, their overall survival times were compared according to the interval between IDA diagnosis and colon cancer confirmation (≤30 days, 31–90 days, and ≥91 days) and are presented with Kaplan–Meir survival curves. (A) For all patients together, (B) for those with stage I/II disease, and (C) for those with stage III/IV disease.