Fig. 2From: Preemptive intravenous iron therapy versus autologous whole blood therapy for early postoperative hemoglobin level in patients undergoing bimaxillary orthognathic surgery: a prospective randomized noninferiority trialComparison of proportion of patients with a anemia, and low levels of b iron and c ferritin at 4 weeks before surgery, immediately before surgery, and on postoperative days 1 and 2 in patients with IV iron therapy (n = 32) and autologous whole blood therapy (n = 32). Values are expressed as number and proportion (%)Back to article page