A Clinical Prediction Rule for Diagnosing Severe Acute Respiratory Syndrome in the Emergency Department

Figure 2. Quartile 1 represents a risk score of 8 to 12, quartile 2 represents a risk score of 13 to 15, quartile 3 represents
a risk score of 16 to 18, and quartile 4 represents a risk score of 19 to 30.
Incidence of severe acute respiratory syndrome (SARS) stratified by risk categories.
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Published Ahead of Print
August 23, 2004,
Ann Intern Med
September 7, 2004
vol. 141
no. 5
333-342