Patient characteristics by group
| p Value | |||||
|---|---|---|---|---|---|
| Patient characteristics | FN group (n=15†) | TP group (n=43) | TN group (n=21) | FN vs TP | FN vs TN |
| Age in years | |||||
| Median | 31 | 30 | 29 | 0.880 | 0.653 |
| Range | 20–57 | 21–62 | 23–63 | ||
| Age distribution (years) | n (%) | n (%) | n (%) | ||
| <30 | 6 (40.0) | 19 (44.2) | 11 (52.4) | ||
| 30–49 | 6 (40.0) | 20 (46.5) | 8 (38.1) | ||
| ≥50 | 3 (20.0) | 4 (9.3) | 2 (9.5) | ||
| Male sex | 7 (46.7) | 17 (39.5) | 9 (42.9) | 0.763 | 1.000 |
| Vaccination status | 5 (33.3) | 22 (51.2) | 13 (61.9) | 0.368 | 0.176 |
| Time to test from symptom onset (hours) | |||||
| Mean | 11.4±10.9 | 22.0±17.3 | 15.7±16.8 | 0.009* | 0.449 |
| Time to test from symptom onset (hours) | n (%) | n (%) | n (%) | ||
| <6 | 3 (20.0) | 4 (9.3) | 2 (14.3) | ||
| 6–12 | 6 (40.0) | 6 (14.0) | 2 (9.5) | ||
| 12–24 | 5 (33.3) | 16 (37.2) | 11 (52.4) | ||
| 24–48 | 0 (0.0) | 11 (25.6) | 2 (9.5) | ||
| ≥48 | 1 (6.7) | 6 (14.0) | 2 (9.5) | ||
| Unknown | 0 (0.0) | 0 (0.0) | 1 (4.8) | ||
*p<0.05.
†Excluded one patient with bacterial pneumonia that developed after influenza virus infection.
FN, false negative; TN, true negative; TP, true positive.