Table 2 Risk factors for ESBL-PE isolation. Derivation Phase

Prolonged hospitalization (≥7 days)

5,39 (2,46 – 11,80)

0.000

1,68

8

1

Hospitalization during previous year

4,87 (2,99 – 7,93)

0.000

1,58

7

1

Immunosuppressive therapy^a

2,97 (1,44 – 6,08)

0,003

1,08

5

1

Neutropenia

1,90 (1,12 – 3,24)

0,017

0,64

3

1

Beta-lactams during the previous month

1,61 (1,06 – 2,42)

0,022

0,47

2

1

Invasive devices at the time of culture^b

1,51 (1,01 – 2,25)

0,038

0,41

2

1

Neoplasia in remission

2,78 (1,25 – 6,17)

0,012

1,02

5

1

No chemotherapy^a

1,90 (1,22 – 2,97)

0,004

0,64

3

1