Table 1 Diagnostic performance of Aspergillus precipitins after one, two, or three freeze–thaw cycles
Diagnostic performance | One freeze–thaw cycle | Two freeze–thaw cycles | Three freeze–thaw cycles | |||
|---|---|---|---|---|---|---|
% (n) | 95% CI | % (n) | 95% CI | % (n) | 95% CI | |
Sensitivity | 90 (9/10) | 60–99 | 90 (9/10) | 60–99 | 90 (9/10) | 60–99 |
Specificity | 86 (25/29) | 69–95 | 93 (27/29) | 78–99 | 83 (24/29) | 65–92 |
Positive predictive value | 69 (9/13) | 42–87 | 82 (9/11) | 52–97 | 64 (9/14) | 39–84 |
Negative predictive value | 96 (25/26) | 81–100 | 96 (27/28) | 82–100 | 96 (24/25) | 80–100 |