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. 2013 Dec 20;21(3):529–534. doi: 10.1136/amiajnl-2013-002241

Figure 2.

Figure 2

The user interface allows selection of any number of filters. The ‘Transfusion’ section denotes patients who received any blood product or patients who did not receive any blood products during surgery. The ‘Age Grouper’ allows selection of predefined age categories. The ‘ASA Status’ allows selection of any American Society of Anesthesiologists (ASA) classification. The ‘Oper. Room Area’ allows selection of procedures based on the location within the hospital. On the right side of the screen, the ‘DX’ code represents the International Classification of Disease (ICD)-9 codes and the ‘CPT (Current Procedural Terminology) Description’ allows selection of specific procedures. Both the DX and CPT sections allow free-text search. The histograms displayed represent data distribution of individual variables. The vertical lines represent the average (red) and 1SD (gray). The top left histogram represents weight, top right is age in days, bottom left is the total blood product volume transfused in mL divided by the patient's weight (mL/kg), and the bottom right represents the surgery time (in min). The histograms update automatically when filters are applied.