Table 4.
Etiology of CAP according to age
| Etiology | 14 ~ 17 yrs (n = 50) | 18 ~ 44 yrs (n = 443) | 45 ~ 64 yrs (n = 272) | 65 ~ 94 yrs (n = 189) | p value |
|---|---|---|---|---|---|
| At least one pathogen | 35 (70) | 197 (44.5) | 103 (37.9) | 58 (30.3) | <0.001 |
| Respiratory viruses (RV) | 15 (30) | 104 (23.5) | 72 (26.5) | 45 (23.8) | 0.651 |
| IFV Ad | 2 (4) | 32 (7.2) | 38 (14) | 22 (11.6) | <0.001 |
| pH1N1 | 2 (4) | 20 (4.5) | 24 (8.8) | 14 (7.4) | 0.743 |
| sH3N2 | 0 | 9 (2) | 14 (5.1) | 7 (3.7) | |
| pH1N1 and sH3N2 | 0 | 3 (0.7) | 0 | 1 (0.5) | |
| HRV | 2 (4) | 19 (4.3) | 13 (4.8) | 7 (3.7) | 0.962 |
| AdVabcd | 7 (14) | 23 (5.2) | 5 (1.8) | 5 (2.6) | <0.001 |
| HMPV | 0 | 6 (1.4) | 6 (2.2) | 5 (2.6) | 0.524 |
| PIV 1 | 2 (4) | 8 (1.8) | 2 (0.7) | 4 (2.1) | 0.236 |
| PIV 3 | 2 (4) | 7 (1.6) | 3 (1.1) | 2 (1.1) | 0.384 |
| PIV 2 | 1 (2) | 9 (2) | 1 (0.4) | 0 | 0.053 |
| IFV B | 1 (2) | 3 (0.7) | 1 (0.4) | 1 (0.5) | 0.495 |
| EV | 1 (2) | 3 (0.7) | 1 (0.4) | 0 | 0.301 |
| RSVA | 0 | 4 (0.9) | 1 (0.4) | 0 | 0.628 |
| RSV B | 0 | 4 (0.9) | 0 | 0 | 0.351 |
| HCoV OC43/HKU1 | 0 | 2 (0.5) | 2 (0.7) | 0 | 0.739 |
| HCoV 229E/NL63 | 0 | 3 (0.7) | 1 (0.4) | 0 | 0.853 |
| PIV 4 | 0 | 1 (0.2) | 0 | 0 | 1.000 |
| Bacteria | 26 (52) | 120 (27.1) | 44 (16.2) | 27 (14.3) | |
| MPabcde | 25 (50) | 106 (23.9) | 24 (8.8) | 13 (6.9) | <0.001 |
| LP | 1 (2) | 2 (0.5) | 1 (0.4) | 0 | 0.262 |
| Typical bacteriacde | 0 | 12 (2.7) | 19 (7) | 14 (7.4) | 0.005 |
| Two or more pathogens | 7 (14) | 40 (9) | 16 (5.9) | 12 (6.3) | 0.141 |
Data are expressed as n (%).
a: p < 0.05, 14 ~ 17 yrs group vs 18 ~ 44 yrs group;
b: p < 0.05, 14 ~ 17 yrs group vs 45 ~ 64 yrs group;
c: p < 0.05, 14 ~ 17 yrs group vs 65 ~ 94 yrs group;
d: p < 0.05, 18 ~ 44 yrs group vs 45 ~ 64 yrs group;
e: p < 0.05, 18 ~ 44 yrs group vs 65 ~ 94 yrs group;
Note: influenza virus (IFV) types A and B, human rhinovirus (HRV), adenovirus (AdV), human metapneumovirus (hMPV), parainfluenza virus (PIV) types 1, 2, 3 and 4, enterovirus (EV), respiratory syncytial virus (RSV) types A and B, human coronavirus (hCoV) types 229E, NL63, OC43 and HKU1, Mycoplasma pneumoniae (MP) and Legionella pneumophila (LP).