Table 3.
Clinical and administrative characteristics of hospitalizations for pneumonia in Italy from 2010 to 2019.
| Total Number of Pneumonia Hospitalizations |
Incidence Rate Per 100,000 |
% * | ||
|---|---|---|---|---|
| ICD-9 Pneumonia Code Position | ||||
| Principal position | 1,374,227 | 227.7 | 55.4% | |
| Second position | 1,106,991 | 183.4 | 44.6% | |
| ICD-19 Pneumonia Code | ||||
| Unspecified pneumonia | 783,574 | 129.8 | 31.6% | |
| Unspecified pneumonia viral | 25,290 | 4.2 | 1.0% | |
| Unspecified pneumonia bacterial | 514,174 | 85.2 | 20.7% | |
| Unspecified bronchopneumonia | 889,320 | 147.4 | 35.8% | |
| Specified pneumonia viral | 24,265 | 4.00 | 1.0% | |
| Specified pneumonia bacterial | 224,320 | 37.20 | 9.0% | |
| Specified pneumonia fungal | 5719 | 0.90 | 0.2% | |
| Other | 10,110 | 1.70 | 0.4% | |
| Coinfection | 4441 | 0.70 | 0.2% | |
| Comorbidities | ||||
| Chronic respiratory disease | 438,730 | 72.7 | 17.7% | |
| Chronic cardiovascular disease | 173,437 | 28.7 | 7.0% | |
| Chronic kidney disease | 170,136 | 28.2 | 6.9% | |
| Cancer | 274,394 | 45.5 | 11.1% | |
| Diabetes mellitus | 271,262 | 45 | 10.9% | |
| At least one comorbidity | 677,903 | 112.3 | 27.3% | |
| At least two comorbidities | 230,401 | 38.2 | 9.3% | |
| Three or more comorbidities | 52,023 | 8.6 | 2.1% | |
| Discharge disposition | ||||
| Routine discharge | 1,775,817 | 294.3 | 71.6% | |
| Transfer | 191,474 | 31.7 | 7.7% | |
| In-hospital death | 322,474 | 53.4 | 13.0% | |
| Other | 191,453 | 31.7 | 7.7% | |
* column percentages.