Table 2.

Analytical performance of cobas® Liat® POCT on frozen samples using the Expanded Gold Standard (EGS) as reference

	TP	FP	FN	TN	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
cobas® Liat® influenza A	310	8	0	418	100% (99.0–100%)	98.1% (96.3–99.0%)	97.5% (95.1–98.7%)	100% (99.0–100%)
cobas® Liat® influenza B	163	2	0	571	100% (97.7–100%)	99.7% (98.7–99.9%)	98.8% (95.7–99.7%)	100% (99.3–100%)
cobas® Liat® RSV	26	4	0	706	100% (87.1–100%)	99.4% (98.6–99.8%)	86.7% (70.3–94.7%)	100% (99.5–100%)

TP true positives, FP false positives, FN false negatives, TN true negatives, 95% CI 95% confidence intervals, PPV positive predictive value, NPV negative predictive value