Table 5 Etiology of CAP according to PSI
PSI I-II (n = 785) | PSI III (n = 113) | PSI IV-V (n = 56) | p value | |
|---|---|---|---|---|
At least one pathogen | 333 (42.5) | 35 (29) | 25 (44.6) | 0.219 |
Respiratory viruses (RV) | 197 (25.1) | 22 (19.5) | 17 (30.4) | 0.267 |
IFV A | 74 (9.4) | 10 (8.8) | 10 (17.9) | 0.118 |
pH1N1bc | 42 (5.4) | 8 (7.1) | 10 (17.9) | 0.018 |
sH3N2 | 28 (3.6) | 2 (1.8) | 0 | |
pH1N1 and sH3N2 | 4 (0.5) | 0 | 0 | |
HRV | 33 (4.2) | 5 (4.4) | 3 (5.4) | 0.854 |
AdV | 36 (4.6) | 3 (2.7) | 1 (1.8) | 0.542 |
HMPV | 14 (1.8) | 1 (0.9) | 2 (3.6) | 0.391 |
PIV 1 | 15 (1.9) | 1 (0.9) | 0 | 0.668 |
PIV 3 | 13 (1.7) | 0 | 1 (1.8) | 0.445 |
PIV 2 | 10 (1.3) | 1 (0.9) | 0 | 1.000 |
IFV B | 6 (0.8) | 0 | 0 | 1.000 |
EV | 4 (0.5) | 1 (0.9) | 0 | 0.624 |
RSVA | 4 (0.5) | 1 (0.9) | 0 | 0.624 |
RSV B | 4 (0.5) | 0 | 0 | 1.000 |
HCoV OC43/HKU1 | 4 (0.5) | 0 | 0 | 1.000 |
HCoV 229E/NL63 | 4 (0.5) | 0 | 0 | 1.000 |
PIV 4 | 1 (0.1) | 0 | 0 | 1.000 |
Bacteria | 187 (23.9) | 17 (15.1) | 13 (23.2) | |
MPa | 157 (20) | 6 (5.3) | 5 (8.9) | <0.001 |
LP | 2 (0.3) | 2 (1.8) | 0 | 0.146 |
Typical bacteriaab | 28 (3.6) | 9 (8) | 8 (14.3) | 0.001 |
Two or more pathogens | 64 (8.2) | 6 (5.3) | 5 (8.9) | 0.562 |