Fig. 1From: Preoperative anemia and long-term survival in patients undergoing colorectal cancer surgery: a retrospective cohort studyPostoperative recovery outcomes after weighting. A The length of postoperative hospitalization had no significant differences between preoperative anemia and non-anemia groups (median time 9.5 vs. 9.5 days, p = 0.275). B The patients in the preoperative anemia group more likely had postoperative anemia (89.3 vs. 18.6%, p < 0.001) and higher mortality (31.2 vs. 23.7%, p < 0.001), but similar on 30-day readmission rates (3.7 vs. 3.2%, p = 0.262). *p < 0.001Back to article page