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Fig. 4 | BMC Medical Informatics and Decision Making

Fig. 4

From: Using information theory to identify redundancy in common laboratory tests in the intensive care unit

Fig. 4

Redundant information in selected ICU lab test pairs. Information contents are plotted as a function of ICU day. The horizontal dashed lines at 4.32 bits represent the maximum achievable entropy. Each lab test pair is shown asymmetrically side by side; e.g., BUN|Cr and Cr|BUN refer to the information in BUN given creatinine and that in creatinine given BUN, respectively. Because Cr has a smaller entropy than BUN, the redundant information between the two variables represents a greater percentage of the entropy in Cr than that in BUN. WBC white blood cell count, Na sodium, Cl chloride, BUN blood urea nitrogen, Cr creatinine, Lac lactate

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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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