Characteristics of adults hospitalized with asthma who needed NPPV or IV
| NPPV (N=407) | IV (N=634 | |
| Gender: Male/Female | 115 (28.3%)/292 (71.7%) | 284 (44.8%)/350 (55.2%) |
| Age: Median (P25-75) | 64.9 (57.0-75.0) | 52.2 (37.0-69.0) |
| Comorbidities: Charlson/Deyo index | 0.93 | 0.49 |
| No comorbidities | 169 (41.5%) | 427 (67.4%) |
| Length of stay (days): Median (P25-P75) | 9.0 (6.0-13.0) | 8.0 (4.0-16.0) |
| In-hospital mortality (N=104, 10%) | 9 (2.2%) | 95 (15%) |