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Table 3 Multivariate analysis of MRSA versus MSSA: duration of MV, inpatient LOS, ICU LOS, and total cost

From: Morbidity and cost burden of methicillin-resistant Staphylococcus aureus in early onset ventilator-associated pneumonia

Dependent variables MRSA estimate (95% CI) P value Model r2
Total MV (days) 4.4 (0.6 to 8.2) 0.03 0.16
VAP MV (days) 4.5 (1.0 to 8.1) 0.01 0.10
Total inpatient LOS (days) 3.8 (-0.5 to +8.0) 0.08 0.26
VAP inpatient LOS (days) 3.7 (-0.5 to +8.0) 0.08 0.06
Total ICU (days)a 5.3 (1.0 to 9.7) 0.02 0.13
VAP ICU (days)a 4.4 (0.4 to 8.4) 0.03 0.10
Total cost (US$) 7731 (-8393 to +23,856) 0.35 0.28
  1. A total of 154 patients were included in this analysis. aAnalysis for ICU days was conducted on patients (n = 95) from hospitals that collect ICU stay data. CI, confidence interval; ICU, intensive care unit; LOS, length of stay; MRSA, methicillin-resistant Staphylococcus aureus; MSSA, methicillin-sensitive Staphylococcus aureus; MV, mechanical ventilation; VAP, ventilator-associated pneumonia.