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Fig. 3 | BMC Medical Informatics and Decision Making

Fig. 3

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

Fig. 3

Information contained in daily ICU lab test results. The total and novel amounts of information are plotted as a function of ICU day. The horizontal dashed lines at 4.32 bits represent the maximum achievable entropy. The redundant portions (i.e., total minus novel) of day 2 and 3 are the mutual information between days 1 and 2 and between days 2 and 3, respectively. Although all lab tests contain redundant information on days 2 and 3 compared to the previous day, platelet, BUN, and Cr have the least novel information on days 2 and 3. Hct hematocrit, WBC white blood cell count, K potassium, Na sodium, Cl chloride, BUN blood urea nitrogen, Cr creatinine, Lac lactate

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