Table 6 Cox proportional hazard model for 28-day mortality

Age (per year increase)

[1.0–1.05]

Intensive care unit stay

[2.02–23.6]

Time to appropriate antibiotic after fever onset (hours)

[0.99–1.02]

Exposure to antibiotics^a

[0.73–5.42]

Methicillin-resistant S. aureus

[0.33–3.0]

Charlson comorbidity index score

[1.1–1.58]