A simplified version of the Walsh clinical prediction rule was accurate for detecting streptococcal pharyngitisValidation and modification of streptococcal pharyngitis clinical prediction rules.

McGinn TG, Deluca J, Ahlawat SK, et al.Validation and modification of streptococcal pharyngitis clinical prediction rules.Mayo Clin Proc 2003;78:289–93.McGinnTGDelucaJAhlawatSKet alValidation and modification of streptococcal pharyngitis clinical prediction rules.Mayo Clin Proc200378289-93

Source of funding: Albert Einstein College of Medicine, Montefiore Medical Center.

For correspondence: Dr T G McGinn, Mount Sinai School of Medicine, New York, NY, USA.[email protected]