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

Established in 1927 by the American College of Physicians

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

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Figure 1. Referral pathways from the community to Prince of Wales and United Christian Hospitals and clinical disposition. RT-PCR = reverse transcriptase polymerase chain reaction; SARS = severe acute respiratory syndrome.

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Table 1. Demographic and Clinical Characteristics of the United Christian Hospital (n = 1274) and Prince of Wales Hospital (n = 1375) Cohorts

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Table 2. Multivariable Predictors of a Diagnosis of Severe Acute Respiratory Syndrome and Associated Risk Scoring System for Step 1

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Table 3. Multivariable Predictors of a Diagnosis of Severe Acute Respiratory Syndrome and Associated Risk Scoring System for Step 2

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Figure 2. Incidence of severe acute respiratory syndrome (SARS) stratified by risk categories. 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.

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Table 4. Performance Indices for the Clinical Prediction Rule