Prediction of methicillin-resistant Staphylococcus aureusin patients with non-nosocomial pneumonia

BMC Infectious Diseases

Table 6 Multivariate analysis of risk factors for MRSA pneumonia

Risk factors	Odds ratio	95% CI	P-value
Age	1.02	0.99-1.04	0.135
Hospitalization for ≥ 2 days in the preceding 90 days	1.77	0.99-3.15	0.053
Residence in a nursing home or extended care facility	1.50	0.71-3.17	0.287
Intravenous antibiotic treatment within 30 days	2.23	1.15-4.32	0.018
Tube feeding	0.85	0.39-2.15	0.853
Hypoxemia^a	1.12	0.66-1.91	0.671
Single infiltrate	0.55	0.33-0.94	0.029
MRSA history in the previous 1 year	6.05	2.99-12.22	<0.001
PSI score ≥ 120	2.40	1.18-4.86	0.015

^aPaO₂ < 60 mmHg, SpO₂ < 90%, or need for oxygen therapy.
Abbreviations: MRSA methicillin-resistant Staphylococcus aureus, PSI pneumonia severity index, CI confidence interval.

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