Table 2.

Results of the multivariable regression analysis of risk factors for mortality in cases of Escherichia coli bloodstream infection (BSI)

Parameter	Odds ratio	95% confidence interval	P-value
Age	0.985	0.975–0.995	0.004
Charlson comorbidity index	1.303	1.238–1.372	<0.001
Length of stay before BSI onset	1.017	1.009–1.024	<0.001
Length of hospital stay after BSI	0.988	0.980–0.996	0.002