TABLE 1.
Performance of the Alere i influenza A&B nucleic acid amplification test compared to that of the Xpert flu A/B assaya
| Influenza type | No. of samples giving the following results by Alere vs Xpertb: |
% Sensitivity (95% CI) | % Specificity (95% CI) | |||
|---|---|---|---|---|---|---|
| +/+ | +/− | −/− | −/+ | |||
| Flu A | 180 | 9 | 15 | 12 | 93.8 (89.3–96.7) | 62.5 (40.6–81.2) |
| Flu B | 45 | 13 | 15 | 4 | 91.8 (80.4–97.7) | 53.6 (33.9–72.5) |
a
Influenza virus is abbreviated in the table as follows: Flu A or B for influenza virus A or B.
b
+/+, true positive; +/−, false positive; −/−, true negative; −/+, false negative.