We developed a severity score (1 to 5) based on a set of measures

(e.g., temperature, blood pressure) to determine if a patient has sepsis.

Answer the following:

a. Suppose we use a score of 3 or higher as our prediction that the patient has sepsis. The table below shows the actual results

(values are number of patients that fall under each category).

Determine the sensitivity and specificity of this test:

b. Use the scores of 3 and 5 (don’t worry about the others) and plot the ROC curve. Estimate the AUC and draw conclusions.

Transcribed Image Text:

Score 1 2 - 3 4 5 Has Sepsis 4 7 18 29 43 Doesn't Have Sepsis 39 33 12 8 4