Characteristics of patients at admission—for patients with nasopharyngeal swabs
| Pulmonary exacerbation (n=174) | Non-pulmonary exacerbation (n=37) | |
| Age (years) | 22 (6) | 21 (5) |
| FEV1 (% predicted) | 58 (34) | 70 (31) |
| FVC (% predicted) | 76 (32) | 91 (32) |
| Length of stay (days) | 13 (8) | 5 (11) |
| White cell count (Ă—109/l) | 9 (5) | 8 (2) |
| C-reactive protein (mg/l) | 14 (28) | 5 (11) |
| Virus NPS positive | 5 | 0 |