TABLE 3.

Sensitivity, specificity, and positive and negative predictive values of biological tests calculated per patient, excluding the four patients with probable ABPA

Test typeSensitivity (%)aSpecificity (%)bNegative predictive value (%)cPositive predictive value (%)d
rAspf4 IgE detection92.3 (12/13)93.7 (45/48)97.8 (45/46)80.0 (12/15)
rAspf6 IgE detection53.8 (7/13)91.6 (44/48)88.0 (44/50)63.6 (7/11)
Anti-Aspergillus IgG ELISA92.3 (12/13)87.5 (42/48)97.7 (42/43)66.6 (12/18)
IE92.3 (12/13)89.6 (43/48)97.7 (43/44)70.6 (12/17)
Total IgE detection69.2 (9/13)84.4 (27/32)87.1 (27/31)64.3 (9/14)
Culture of Aspergillus in sputum53.8 (7/13)85.0 (34/40)85.0 (34/40)58.3 (7/12)
  • a Sensitivity = true positive/(true positive + false negative).

  • b Specificity = true negative/(true negative + false positive).

  • c Negative predictive value = true negative/(true negative + false negative).

  • d Positive predictive value = true positive/(true positive + false positive).