Table 1 Epidemiological, demographic and clinical characteristics of patients with bloodstream infections (BSI) caused by gram-negative bacteria in tertiary referral hospital in Salvador, Brazil (n = 143)

 Male sex

2.45 (1.09–5.52)

 Age groups (years), median (1 qt–3 qt)

–

 0–15

–

 16–30

0.89 (0.26–2.99)

 31–59

0.61 (0.28–1.37)

 ≥60

2.02 (0.96–4.27)

 Charlson score, median (1 qt–3 qt) (n = 134)*

–

 ≥2 (n = 134)

1.41 (0.67–2.97)

 Congestive heart failure (n = 134)

1.44 (0.33–6.35)

 Cerebrovascular disease (n = 134)

1.08 (0.35–3.33)

 Liver disease

3.78 (1.12–12.73)

 Kidney disease

0.61 (0.23–1.66)

 History of malignancy

0.82 (0.39–1.76)

 Metastatic disease

1.03 (0.39–2.75)

 HIV/AIDS

–

 Previous antimicrobial use (n = 80)

2.41 (1.11–5.25)

 Prophylactic

0.93 (0.37–2.32)

 Therapeutic

2.37 (1.12–5.02)

 Hospitalized in prior 6 months (n = 140)

1.58 (0.74–3.38)

 Long hospital stay (> 14 days)

1.2 (0.55–2.79)

 Users of Health Insurance

1.23 (0.54–2.94)

 Primary

1.16 (0.56–2.41)

 Secondary (n = 63)

1.16 (0.56–2.41)

 Urinary tract (n = 29)

0.82 (0.27–2.53)

 Respiratory tract (n = 17)

1.25 (0.37–4.28)

 Others (n = 19)

1.02 (0.30–3.41)

 Community-associated (n = 6)

0.48 (0.05–4.28)

 Community-onset, healthcare associated (n = 44)

0.76 (0.34–1.71)

 Hospital-onset, healthcare associated (n = 93)

1.43 (0.65–3.14)

 Escherichia coli (n = 50)

0.70 (0.33–1.50)

 Klebsiella pneumoniae (n = 50)

5.23 (2.53–0.77)

 Serratia marcescens (n = 15)

0.15 (0.02–1.24)

 Enterobacter cloacae (n = 13)

0.72 (0.19–2.75)

 Pseudomonas aeruginosa (n = 12)

0.47 (0.09–2.24)

 Acinetobacter baumannii (n = 6)

5.29 (0.93–9.88)

 Others*** (n = 24)

–

Polymicrobial BSI (n = 22)^Ω

1.87 (0.74–4.71)