| CRP <25 | CRP ⩾25 | |
| CRB65 | ||
| 0–1 | 3/200 (1.5%) | 2/53 (3.77%) |
| 2 | 10/90 (11.1%) | 3/24 (12.5%) |
| ⩾3 | 8/30 (26.6%) | 9/22 (40.9%) |
| CURB65 | ||
| 0–1 | 1/148 (0.7%) | 1/41 (2.4%) |
| 2 | 4/92 (4.3%) | 2/26 (7.7%) |
| ⩾3 | 16/80 (20%) | 11/32 (34.4%) |
| PSI | ||
| I–II | 0/86 | 0/25 |
| III | 2/76 (2.6%) | 0/13 |
| IV | 8/114 (7%) | 6/39 (15.4%) |
| V | 11/44 (25%) | 8/22 (36.4%) |
Deaths/total numbers in each group (%).
CRB65, Confusion, Respiratory rate, Blood pressure, ≥65 years of age; CRP, C-reactive protein; CURB65, Confusion, Urea nitrogen, Respiratory rate, Blood pressure, ≥65 years of age; PSI, Pneumonia Severity Index