Fig. 2From: Perioperative goal-directed therapy and postoperative outcomes in patients undergoing high-risk abdominal surgery: a historical-prospective, comparative effectiveness studyTime series analysis showing length of stay in the hospital (in days) for each patient over the total study period including pre-implementation period (left side of the gray area), training period (gray area), and post-implementation period (right side of the gray area)Back to article page