Predictive value of a 24 hour tuberculin skin test evaluation.
The predictive value of induration 24 hours after administration of purified protein derivative (PPD) was examined. Altogether 1082 healthy schoolchildren were tested using 5 tuberculin units of PPD. Induration was measured at 24, 48, and 72 hours. At 24 hours, induration of any size had a relatively low positive predictive value (63%), although indurations > 5 mm had a higher (86%) positive predictive value.
Oztürk
F
F
Ondokuz Mayis University School of Medicine, Department of Paediatrics, Samsun, Turkey.
Eskiocak
M
M
Bay
A
A
Sancak
R
R
Dabak
S
S
Gürses
N
N
D000293:Adolescent; D017677:Age Distribution; D002648:Child; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000473:pathology; D011237:Predictive Value of Tests; D013997:Time Factors; D014374:Tuberculin Test; D014376:Tuberculosis / Q000175:diagnosis*