Table 2.

Risk factors associated with early mortality in patients with MRSA bacteremia according to survival

Variable	Early mortality vs. late mortality		Early mortality vs. survival		Late mortality vs. survival
	Univariate analysis, OR (95% CI)	Multivariate analysis, aOR (95% CI)	Univariate analysis, OR (95% CI)	Multivariate analysis, aOR (95% CI)	Univariate analysis, OR (95% CI)	Multivariate analysis, aOR (95% CI)
Comorbidity
Liver cirrhosis	-	-	2.92 (1.52–5.61)	3.79 (1.38–10.37)a	-	-
McCabe and Jackson classification
Rapidly or ultimately fatal	-	-	-	-	2.24 (1.75–2.86)	4.61 (2.37–9.00)a
Severity of illness
Severe sepsis or septic shock	1.48 (1.07–2.05)	4.49 (1.28–15.75)a	3.22 (2.45–4.24)	10.98 (3.82–31.52)a	2.17 (1.58–3.00)	2.95 (1.54–5.63)a
Treatment
Anti-MRSA therapy on D0	-	-	1.88 (1.20–2.96)	1.41 (0.57–3.50)	-	-
Microbiologic factors
ST72-SCCmecIV-agrI strain	3.20 (1.17–8.78)	3.14 (0.41–23.86)	-	-	1.18 (1.05–1.32)	1.75 (0.20–1.69)
sel	0.73 (0.53–0.99)	0.43 (0.07–2.77)	-	-	0.48 (0.22–1.04)	0.58 (0.20–1.69)

OR, odds ratio; CI, confidence interval; aOR, adjusted odds ratio; MRSA, methicillin-resistant Staphylococcus aureus; ST, sequence type; SCC, staphylococcal cassette chromosome.

^ap < 0.05.