Table 1.
Method of diagnosis, resource utilization, and death data for all patients with influenza admitted to a network of three tertiary care hospitals during the 2013–2014 influenza season
| Characteristic | Hospital A |
Hospital B |
Hospital C |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Total (n = 186) |
Adults (n = 150) |
Children (n = 36) |
Total (n = 141) |
Adults (n = 113) |
Children (n = 28) |
Total (n = 104) |
Adults (n = 86) |
Children (n = 18) |
|
| [n (%)] | [n (%)] | [n (%)] | [n (%)] | [n (%)] | [n (%)] | [n (%)] | [n (%)] | [n (%)] | |
| Method of diagnosis | |||||||||
| PCR | 150 (80.6) | 125 (83.3) | 25 (69.4) | 125 (88.7) | 102 (90.3) | 23 (82.1) | 81 (77.9) | 68 (79.1) | 13 (72.2) |
| ICD-9 code | 36 (19.4) | 25 (16.7) | 11 (30.6) | 16 (11.3) | 11 (9.7) | 5 (17.9) | 23 (22.1) | 18 (20.9) | 5 (27.8) |
| Resource utilization | |||||||||
| Mechanical ventilation | 38 (20.4) | 30 (20.0) | 8 (22.2) | 22 (15.6) | 22 (19.5) | 0 | 26 (25.0) | 23 (26.7) | 3 (16.7) |
| ECMO | 10 (5.4) | 10 (6.7) | 0 | 5 (3.5) | 5 (4.4) | 0 | 2 (1.9) | 2 (2.3) | 0 |
| ICU days* | 859 | 738 | 121 | 383 | 380 | 3 | 278 | 266 | 12 |
| Mechanical ventilation days* | 657 | 588 | 69 | 254 | 254 | 0 | 169 | 162 | 7 |
| ECMO days* | 144 | 144 | 0 | 74 | 74 | 0 | 11 | 11 | 0 |
| Death | 8 (4.3) | 8 (5.3) | 0 | 4 (2.8) | 4 (3.5) | 0 | 13 (12.5) | 11 (12.8) | 2 (11.1) |
| Total admissions (all patients)† | 30,023 | 24,443 | 5,590 | 24,530 | 19,889 | 4,641 | 22,415 | 18,250 | 4,165 |
| Total patient-days (all patients)† | 214,472 | 169,857 | 44,615 | 151,665 | 126,943 | 24,712 | 119,221 | 89,445 | 29,776 |
Definition of abbreviations: ECMO = extracorporeal membrane oxygenation; ICD-9 = International Classification of Diseases, 9th Revision; ICU = intensive care unit; PCR = polymerase chain reaction.
*
Cumulative ICU, mechanical ventilation, and ECMO days among patients with influenza.
†
Total admissions and total patient-days among all patients admitted to hospital.