Table 3 Bacterial pathogen distribution grouped by MRSA therapy
Overall (n = 80,330) | MRSA therapy (n = 29,254) | No MRSA therapy (n = 51,076) | P-value* | |
|---|---|---|---|---|
Organism identified, % | 10.3 | 13.9 | 8.2 | < 0.0001 |
Single organism identified | 9.3 | 12.1 | 7.7 | < 0.0001 |
Multiple organisms identified | 1.0 | 1.9 | 0.5 | < 0.0001 |
Gram-positive pathogens, % | ||||
Streptococcus pneumoniae | 2.8 | 2.7 | 2.9 | 0.0571 |
Streptococcus, other | 0.4 | 0.5 | 0.4 | 0.0270 |
Staphylococcus aureus | 5.1 | 8.7 | 3.1 | < 0.0001 |
MRSA | 3.3 | 5.1 | 2.3 | < 0.0001 |
Gram-negative pathogens, % | ||||
Klebsiella pneumoniae | 0.7 | 1.0 | 0.6 | < 0.0001 |
Pseudomonas spp. | 1.5 | 1.9 | 1.2 | < 0.0001 |
Haemophilus influenzae | 0.8 | 0.5 | 0.9 | < 0.0001 |
Escherichia coli | 0.2 | 0.4 | 0.2 | < 0.0001 |
Other gram-negatives | 0.5 | 0.6 | 0.4 | 0.0007 |
Atypical pathogens, % | ||||
Mycoplasma pneumoniae | < 0.1 | < 0.1 | 0.1 | 0.0839 |
Legionella spp. | 0.1 | 0.2 | 0.1 | 0.2029 |
Chlamydia spp. | < 0.1 | <0.1 | < 0.1 | 0.7561 |
Anaerobes, % | 0.1 | 0.1 | 0.1 | 0.0139 |