| Demographic characteristics | |
| Age yrs | 73 (59–82) |
| Male | 512 (58.4) |
| Coexisting illnesses | |
| Coronary heart disease | 168 (19.2) |
| Renal dysfunction | 180 (20.5) |
| COPD | 259 (29.5) |
| Neoplastic disease | 106 (12.1) |
| Diabetes | 154 (17.6) |
| Clinical history | |
| Fever | 601 (68.5) |
| Chills | 291 (33.2) |
| Clinical findings | |
| Confusion | 67 (8.4) |
| Respiratory rate breaths·min−1 | 20 (16–25) |
| Systolic blood pressure mmHg | 133 (120–149) |
| Heart rate beats·minute−1 | 95 (82–108) |
| Body temperature °C | 38.1 (37.3–38.9) |
| Rales | 599 (70.6) |
| Laboratory findings during hospitalisation | |
| Initial albumin level g·L−1 | 35 (31–39) |
| Peak creatinine levels | 90 (71–113) |
| Peak white blood cells | 12.9 (9.9–17.3) |
| Peak procalcitonin | 0.67 (0.20–3.65) |
| Peak C-reactive protein | 179 (105–264) |
| Peak proADM | 1.2 (0.8–1.9) |
| Initial severity assessment | |
| PSI class 1/2 | 263 (30.0) |
| PSI class 3 | 187 (21.3) |
| PSI class 4 | 322 (36.7) |
| PSI class 5 | 105 (12.0) |
Data are presented as median (interquartile range) or n (%). COPD: chronic obstructive pulmonary disease; proADM: pro-adrenomedullin; PSI: Pneumonia Severity Index. #: n = 877.