Table 2 The microorganisms isolated from the patients and initial antibiotics
Variables | Overall series | Propensity score-matched pairs | ||||
|---|---|---|---|---|---|---|
PHAP (n = 97) | CAP (n = 607) | P value | PHAP (n = 88) | CAP (n = 88) | P value | |
Microorganisms | ||||||
Identified pathogens | 33 (34.0) | 201 (33.1) | 0.860 | 30 (34.1) | 35 (39.8) | 0.435 |
Gram-positive bacteria | ||||||
Streptococcus pneumoniae | 9 (9.2) | 85 (14.0) | 0.193 | 8 (9.1) | 10 (11.4) | 0.619 |
Staphylococcus aureus | 5 (5.1) | 21 (3.4) | 0.386 | 4 (4.5) | 5 (5.7) | 1.000 |
Methicillin-sensitive S. aureus | 2 (2.0) | 9 (1.4) | 0.654 | 2 (2.3) | 3 (3.4) | 1.000 |
Methicillin-resistant S. aureus | 3 (3.0) | 12 (1.9) | 0.448 | 2 (2.3) | 2 (2.3) | 1.000 |
Other gram-positive bacteria | 1 (1.0) | 8 (1.3) | 1.000 | 1 (1.1) | 0 (0) | 1.000 |
Gram-negative bacteria | ||||||
Pseudomonas aeruginosa | 8 (8.2) | 19 (3.1) | 0.023 | 8 (9.1) | 7 (8.0) | 0.787 |
Haemophilus influenza | 1 (1.0) | 7 (1.1) | 1.000 | 1 (1.1) | 1 (1.1) | 1.000 |
Klebsiella pneumoniae | 8 (8.2) | 31 (5.1) | 0.209 | 7 (8.0) | 8 (9.1) | 0.787 |
ESBL (+) | 0 (0) | 2 (0.3) | 1.000 | 0 (0) | 0 (0) | 1.000 |
ESBL (−) | 8 (8.2) | 29 (4.7) | 0.155 | 7 (8.0) | 8 (9.1) | 0.787 |
Acinetobacter species | 2 (2.0) | 2 (0.3) | 0.094 | 2 (2.3) | 0 (0) | 0.497 |
Other gram-negative speciesa | 1 (1.0) | 11 (1.8) | 1.000 | 1 (1.1) | 1 (1.1) | 1.000 |
Mycoplasma pneumonia | 2 (2.0) | 27 (4.4) | 0.409 | 2 (2.3) | 3 (3.4) | 1.000 |
Polymicrobial pathogens | 4 (4.1) | 10 (1.6) | 0.114 | 4 (4.5) | 0 (0) | 0.121 |
Potentially drug-resistant pathogensb | 14 (14.4) | 41 (6.7) | 0.009 | 12 (13.6) | 9 (10.2) | 0.485 |