Table 3.
NxTAG RPP performance after discrepant analysis (prospective sample set).
Target | Positive Agreement (Sensitivity) |
Negative Agreement (Specificity) |
# “No Call” by Comparator | ||||
---|---|---|---|---|---|---|---|
TP/TP + FN | % | 95% CI | TN/TN + FP | % | 95% CI | ||
Influenza A (matrix) | 271/271 | 100 | 98.6–100 | 1836/1860 | 98.0 | 98.1–99.1 | 0 |
Influenza A H1 | 21/21 | 100 | 83.9–100 | 2091/2111* | 99.1 | 98.5–99.4 | 0 |
Influenza A H3 | 237/238 | 96.6 | 97.7–99.9 | 1874/1885 | 99.4 | 98.9–99.7 | 9 |
Influenza B | 91/92 | 98.9 | 94.1–99.8 | 2022/2032 | 99.5 | 99.1–99.7 | 8 |
Respiratory syncytial virus A | 81/81 | 100 | 95.1–100 | 2037/2044 | 99.7 | 99.3–99.8 | 7 |
Respiratory syncytial virus B | 134/136 | 98.5 | 94.8–99.6 | 1978/1987 | 99.5 | 99.2–99.8 | 9 |
Coronavirus 229E | 21/21 | 100 | 83.9–100 | 2098/2111 | 99.4 | 98.9–99.7 | 0 |
Coronavirus OC43 | 30/31 | 96.8 | 83.3–99.9 | 2092/2101 | 99.6 | 99.2–99.8 | 0 |
Coronavirus NL63 | 62/65 | 95.4 | 87.1–99.0 | 2053/2065 | 99.4 | 99.0–99.7 | 2 |
Coronavirus HKU1 | 13/14 | 92.9 | 66.1–99.8 | 2113/2118 | 99.8 | 99.4–99.9 | 0 |
Human metapneumovirus | 137/140 | 97.9 | 93.9–99.3 | 1964/1980 | 99.2 | 98.7–99.5 | 12 |
Enterovirus/Rhinovirus | 304/310 | 98.1 | 95.8–99.1 | 1772/1822 | 97.3 | 96.4–97.9 | 0 |
Adenovirus | 22/22 | 100 | 85.1–100 | 2078/2110 | 98.5 | 97.9–98.9 | 0 |
Parainfluenza 1 | 5/5 | 100 | 47.8–100 | 2115/2116 | 99.9 | 99.7–100 | 11 |
Parainfluenza 2 | 1/1 | 100 | 20.7–100 | 2122/2123 | 99.9 | 99.7–100 | 8 |
Parainfluenza 3 | 22/22 | 100 | 85.1–100 | 2087/2102 | 99.3 | 98.8–99.6 | 8 |
Parainfluenza 4 | 3/5 | 60.0 | 14.7–94.7 | 2116/2127 | 99.5 | 99.1–99.7 | 0 |
Human bocavirus† | 27/28 | 96.4 | 81.7–99.9 | 2081/2104 | 98.9 | 98.4–99.3 | 0 |
Chlamydophila pneumoniae† | 0/1 | 0.0 | 0.0–97.5 | 2131/2131 | 100 | 99.8–100 | 0 |
Mycoplasma pneumoniae† | 7/9 | 77.8 | 40.0–97.2 | 2121/2123 | 99.9 | 99.7–100 | 0 |
11/20 NxTAG RPP false positive specimens were un-subtypeable by the comparator. xTAG RVP does not detect influenza A(H1N1)pdm09 whereas NxTAG RPP does.
Discrepant analysis not available.