Table 3.

Clinical prediction rules for strep pharyngitis and pneumonia

Strep pharyngitis			Pneumonia
	Children	Adults	Adults
Age range	3–17 years old	18–70 years old	18–70 years old
Rule	McIsaac [13]	Centor [10]	Heckerling [12]
Criteria	Tonsillar exudate +1 Tender anterior cervical adenopathy +1 Lack of cough +1 History of fever +1 3–14 years old +1	Tonsillar exudate +1 Tender anterior cervical adenopathy +1 Lack of cough +1 History of fever +1	Temperature > 100 F +1 HR > 100 bpm +1 Crackles (rales) +1 Decreased breath sounds +1 Absence of asthma +1

HR heart rate, bpm beats per minute