Table 3.
Comparison of BinaxNOW® influenza A & B, Remel X/pect™ Flu A & B and BD Directigen™ EZ Flu A+B to real‐time PCR for the detection of influenza A/H1N1 (2009)
| RIDT | Patients | PCR positive | PCR negative | |||||
|---|---|---|---|---|---|---|---|---|
| Age | n | RIDT+ | RIDT− | Sensitivity (%) | RIDT+ | RIDT− | Specificity (%) | |
| Binax | <2 | 65 | 12 | 2 | 85·7 | 4 | 47 | 92·2 |
| 2–39 | 271 | 42 | 21 | 66·7 | 2 | 164 | 98·8 | |
| 40+ | 662 | 15 | 30 | 33·3 | 3 | 504 | 99·4 | |
| Total | 846 | 69 | 53 | 56·6 | 9 | 715 | 98·8 | |
| Xpect | <2 | 1 | 1 | 0 | 100·0 | 0 | 0 | – |
| 2–39 | 43 | 11 | 6 | 64·7 | 2 | 24 | 92·3 | |
| 40+ | 149 | 9 | 16 | 36·0 | 1 | 123 | 99·2 | |
| Total | 193 | 21 | 22 | 48·8 | 3 | 147 | 98·0 | |
| BD | <2 | 39 | 8 | 2 | 80·0 | 1 | 28 | 96·6 |
| 2–39 | 119 | 25 | 18 | 58·1 | 2 | 74 | 97·4 | |
| 40+ | 71 | 6 | 7 | 46·2 | 1 | 57 | 98·3 | |
| Total | 229 | 39 | 27 | 59·1 | 4 | 159 | 97·6 | |
RIDT, rapid influenza diagnostic test.