TY - JOUR
T1 - Streptococcal pharyngitis
T2 - Diagnosis by gram stain
AU - Crawford, G.
AU - Brancato, F.
AU - Holmes, K. K.
PY - 1979/1/1
Y1 - 1979/1/1
N2 - Group A beta-hemolytic streptococci were isolated from 49 (10.4%) of 472 patients with pharyngitis. Throat culture results, interpreted by five observers of varying experience, showed the mean sensitivity, specificity, and predictive value of a positive Gram-stained smear of pharyngeal secretions as 73%, 96%, and 71%. Assignment to a high-risk group by clinical algorithm gave sensitivity, specificity, and predictive value of only 45%, 83%, and 23%. The Gram-stained smear is the most accurate method of early diagnosis of streptococcal pharyngitis.
AB - Group A beta-hemolytic streptococci were isolated from 49 (10.4%) of 472 patients with pharyngitis. Throat culture results, interpreted by five observers of varying experience, showed the mean sensitivity, specificity, and predictive value of a positive Gram-stained smear of pharyngeal secretions as 73%, 96%, and 71%. Assignment to a high-risk group by clinical algorithm gave sensitivity, specificity, and predictive value of only 45%, 83%, and 23%. The Gram-stained smear is the most accurate method of early diagnosis of streptococcal pharyngitis.
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U2 - 10.7326/0003-4819-90-3-293
DO - 10.7326/0003-4819-90-3-293
M3 - Article
C2 - 85421
AN - SCOPUS:0018374069
SN - 0003-4819
VL - 90
SP - 293
EP - 297
JO - Annals of Internal Medicine
JF - Annals of Internal Medicine
IS - 3
ER -