Table 2.

Distribution of the ten most common pathogens causing gram-negative bloodstream infection in the referral and population-based cohorts.

Pathogen	Referral cohort N=2919	Population-based cohort N=846	Unadjusted OR (95% CI)	Adjusted OR* (95% CI)
Escherichia coli	1015 (34.8)	457 (54.0)	0.45 (0.39-0.53)	0.50 (0.43-0.58)
Klebsiella pneumoniae	403 (13.8)	102 (12.1)	1.17 (0.93-1.47)	1.18 (0.93-1.49)
Pseudomonas aeruginosa	419 (14.4)	55 (6.5)	2.41 (1.80-3.23)	2.26 (1.70-3.06)
Enterobacter cloacae	190 (6.5)	24 (2.8)	2.38 (1.55-3.67)	2.31 (1.53-3.66)
Acinetobacter species	114 (3.9)	20 (2.5)	1.68 (1.04-2.72)	1.52 (0.96-2.54)
Serratia marcescens	102 (3.5)	12 (1.4)	2.52 (1.38-4.60)	2.34 (1.33-4.52)
Klebsiella oxytoca	98 (3.4)	18 (2.1)	1.60 (0.99-2.74)	1.58 (0.97-2.71)
Stenotrophomonas maltophilia	67 (2.3)	1 (0.1)	19.74 (4.38-345.67)	17.94 (3.98-314.43)
Enterobacter aerogenes	51 (1.7)	10 (1.2)	1.49 (0.79-3.21)	1.40 (0.74-2.95)
Proteus mirabilis	41 (1.4)	25 (3.0)	0.47 (0.28-0.77)	0.49 (0.30-0.82)

OR: odds ratio, CI: confidence interval.

Data are given as number (%) unless otherwise specified.

^*Odds ratios in this column are adjusted for age group and gender.