Table 4.

 Results of near‐patient assays for the diagnosis of influenza virus infection in relation to influenza A virus RNA concentration in clinical samples

Near‐patient assay/manufacturer	No. of samples available	Median concentration of influenza A virus RNA (copies/mL)		p‐valuea	ROC curve cut‐off for 100% sensitivity (copies/mL)
		Negative	Positive
Binax Now Influenza A&B/Binax Inc.	28	1.7 × 103	5.1 × 104	0.002	2.7 × 103
Quick S‐Influ A/B/Seiken	24	1.9 × 103	8.0 × 104	0.048	2.6 × 103
Influ‐A&B Respi‐Strip/Coris Bioconcept	22	2.1 × 103	7.2 × 104	0.014	9.3 × 102
Actim Influenza A&B/Medix Biochemica	32	3.4 × 103	3.1 × 104	0.004	6.8 × 102

ROC, receiver operating characteristic.

^aMann–Whitney U‐test.