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QUESTION: In adults with symptoms of upper respiratory tract infection or sore throat, what is the accuracy of a simplified version of the Walsh clinical prediction rule (CPR) for detecting group A β haemolytic streptococcal (GABHS) pharyngitis?
A cohort study to validate a simplified version of a previously derived prediction rule.
Primary care clinic of an inner city hospital in New York City, New York, USA.
171 consecutive walk in patients (mean age 35 y, 77% women) with symptoms of upper respiratory tract infection or sore throat.
Description of prediction guide
All patients were assessed using 5 clinical predictors. The simplified and original Walsh CPRs used similar clinical predictors but different scores: oral temperature (original: 3 points for each degree >36.1°C; simplified: 1 point for >38.3°C), close contact with a person believed to have a streptococcal infection …