Mortality from community-acquired pneumonia according to aetiology and CURB-65 risk class: number of deaths among patients with specific aetiology (% of all deaths with specific aetiology) per CURB-65 risk class
| Aetiology | CURB-65 0–1 (n=36/1806, 2.0%) | CURB-65 2 (n=79/977, 8.1%) | CURB-65 3–5 (n=142/740, 19.2%) | Total (n=257/3523, 7.3%) |
| Streptococcus pneumoniae | 15/290 (5) | 7/180 (4) | 23/142 (16) | 45/613 (7) |
| Haemophilus influenzae | 0/32 (0) | 0/23 (0) | 2/15 (13) | 2/70 (3) |
| Moraxella catarrhalis | 0/1 (0) | 1/1 (100) | 1/3 (33) | 2/5 (40) |
| Atypical bacteria | 1/182 (1) | 3/58 (5) | 0/23 (0) | 4/263 (2) |
| Legionella pneumophila | 0/65 (0) | 2/36 (6) | 0/17 (0) | 2/118 (2) |
| Mycoplasma pneumoniae | 1/55 (2) | 1/7 (14) | 0/3 (0) | 2/65 (3) |
| Chlamydophila pneumoniae | 0/36 (0) | 0/12 (0) | 0/2 (0) | 0/50 (0) |
| Coxiella burnetii | 0/26 (0) | 0/3 (0) | 0/1 (0) | 0/30 (0) |
| Virus | 1/81 (1) | 1/43 (2) | 1/24 (4) | 3/148 (2) |
| Staphylococcus aureus | 1/8 (13) | 2/11 (18) | 3/6 (50) | 6/25 (24) |
| MS | 1/2 (50) | 1/7 (14) | 2/5 (40) | 4/14 (29) |
| MR | 0/6 (0) | 1/4 (25) | 1/1 (100) | 2/11 (18) |
| GNEB | 1/10 (10) | 2/4 (50) | 5/13 (39) | 8/27 (30) |
| Pseudomonas aeruginosa | 0/11 (0) | 1/18 (6) | 7/21 (33) | 8/50 (16) |
| Mixed | 2/101 (2) | 10/61 (16) | 10/46 (22) | 22/208 (11) |
| Others | 2/24 (8) | 3/15 (20) | 2/15 (13) | 7/54 (13) |
| Unknown | 13/1065 (1) | 49/563 (9) | 88/432 (20) | 150/2060 (7) |
Data are expressed as number of deaths/n (%).
GNEB, Gram-negative enteric bacilli; MR, methicillin-resistant; MS, methicillin-sensitive.