| Characteristic | 30-Day mortality | p Value | |
| Yes | No | ||
| n = 36 (7.9%) | n = 417 (92.1%) | ||
| Age, mean (SD) | 79 (8) | 66 (17) | 0.0001 |
| Gender, F/M (%) | 15/21 (41.7/58.3) | 156/261 (37.4/62.6) | 0.6 |
| Long-term care facility, no (%) | 7 (19.4) | 17 (4.1) | 0.0001 |
| Smoking, no (%) | 4 (11.1) | 95 (22.8) | 0.1 |
| Alcohol, no (%) | 3 (8.3) | 48 (11.5) | 0.5 |
| Comorbidity, no (%) | |||
| Heart failure | 9 (25) | 67 (16.1) | 0.1 |
| Renal failure | 2 (5.6) | 23 (5.5) | 0.9 |
| Diabetes | 5 (13.9) | 86 (20.6) | 0.3 |
| Liver disease | 1 (2.8) | 11 (2.6) | 0.9 |
| COPD | 6 (16.7) | 73 (17.5) | 0.8 |
| Neurological disease | 21 (58.3) | 77 (18.5) | 0.0001 |
| Neoplasm | 4 (11.1) | 15 (3.6) | 0.03 |
| PSI, no (%) | 0.01 | ||
| I | 0 | 48 (11.5) | |
| II | 0 | 73 (17.5) | |
| III | 2 (5.6) | 93 (22.3) | |
| IV | 14 (38.9) | 153 (36.7) | |
| V | 20 (55.6) | 50 (12) | |
| CRB65, no (%) | 0.01 | ||
| 0 | 1 (2.8) | 78 (19) | |
| 1 | 4 (11.1) | 189 (46) | |
| 2 | 14 (38.9) | 112 (27.3) | |
| 3 | 13 (36.1) | 29 (7.1) | |
| 4 | 4 (11.1) | 3 (0.7) | |
| CURB65, no (%) | |||
| 0 | 1 (2.8) | 63 (15.1) | 0.01 |
| 1 | 1 (2.8) | 140 (33.6) | |
| 2 | 7 (19.4) | 123 (29.5) | |
| 3 | 13 (36.1) | 66 (15.8) | |
| 4 | 10 (27.8) | 23 (5.5) | |
| 5 | 4 (11.1) | 2 (0.5) | |
| ICU admission | 9 (25.0) | 42 (10.1) | 0.007 |
COPD, chronic obstructive pulmonary disease; CRB65, Confusion, Respiratory rate, Blood pressure, ≥65 years of age; CURB65, Confusion, Urea nitrogen, Respiratory rate, Blood pressure, ≥65 years of age; F, female; ICU, Intensive Care Unit; M, male; PSI, Pneumonia Severity Index.