Table 2.
Comparisons of 1032 cases with community-acquired pneumonia based on etiology identification and ICU admission.
| Characteristic | Positive∗ (n = 705) | Negative∗ (n = 327) | P value | ICU (n = 246) | No ICU (n = 786) | P value |
|---|---|---|---|---|---|---|
| Age (years), median (range) | 4.5 (0–17.9) | 5.3 (0–17.9) | <0.001 | 5.0 (0.1–17.7) | 5.8 (0–17.9) | 0.001 |
| Male | 344 (48.9) | 150 (45.7) | 0.3 | 125 (50.8) | 369 (46.9) | 0.3 |
| Prematurity | 80 (11.9) | 31 (9.5) | 0.2 | 25 (10.2) | 90 (11.5) | 0.6 |
| Underlying diseases | 36 (5.1) | 33 (10.1) | 0.003 | 22 (8.9) | 47 (6.0) | 0.1 |
| Mean CRP, mg/dL | 15.3 ± 12.7 | 11.4 ± 10.8 | <0.001 | 22.2 ± 12.8 | 11.5 ± 10.9 | <0.001 |
| CRP> 4 | 538 (76.4) | 216 (65.9) | <0.001 | 219 (89.0) | 535 (68.1) | <0.001 |
| CRP>10 | 401 (57.0) | 142 (43.3) | <0.001 | 195 (79.3) | 348 (44.3) | <0.001 |
| Length of Stay, days | 9.3 ± 9.3 | 6.5 ± 6.4 | <0.001 | 17.2 ± 12.7 | 5.7 ± 3.9 | <0.001 |
| ICU admission | 201 (28.6) | 45 (13.7) | <0.001 | – | – | – |
| O2 supply | 290 (41.2) | 87 (26.5) | <0.001 | 204 (82.9) | 173 (22.0) | <0.001 |
| Chest radiograph | ||||||
| Sublobar | 177 (25.1) | 94 (28.7) | 0.2 | 27 (11.0) | 244 (31.0) | <0.001 |
| lobar | 336 (47.7) | 184 (56.1) | 0.01 | 57 (23.2) | 463 (58.9) | <0.001 |
| With pleural effusion | 92 (13.1) | 37 (11.3) | 0.4 | 69 (28.0) | 60 (7.6) | <0.001 |
| Complicated pneumonia | 96 (13.6) | 12 (3.7) | <0.001 | 93 (37.8) | 15 (91.9) | <0.001 |
| Etiology | ||||||
| Virus alone | – | – | – | 47 (19.1) | 151 (19.2) | 1.0 |
| Bacteria alone | – | – | – | 123 (50.0) | 316 (40.2) | 0.008 |
| Mixed virus and bacteria | – | – | – | 34 (13.8) | 53 (6.7) | 0.001 |
∗Positive: cases with identified any potential pathogens, Negative: cases with no identified potential pathogen.