Table 3 Multivariate logistic regression models clustered on hospitals presenting independent factors associated with urinary tract infection stratified on gender, Swiss-NOSO Nationwide Prevalence Study, 2004

Age groups (%)

0.01*

0.10*

 <70 years

1.00

-

1.00

-

-

 > = 71 years

2.57

1.24-5.31

1.51

0.93-2.45

Recent surgical intervention

0.78

0.43

 No

1.00

-

1.00

-

 Yes

1.11

0.55-2.21

0.82

0.49-1.35

ASA score (%)

0.30

0.47

 <4 pts

1.00

-

1.00

-

-

 4-5 pts

0.52

0.15-1.81

0.73

0.31-1.73

Charlson group

0.50

0.89

 0-3 pts

1.00

-

1.00

-

 > = 4 pts

1.44

0.50-4.11

0.94

0.39-2.28

Length of stay

0.57

<0.001*

 <20 days

1.00

-

-

1.00

-

-

 21-40 days

0.86

0.26-2.92

0.81

2.75

1.52-4.96

0.001

 > = 41 days

1.75

0.59-5.17

0.31

2.89

1.41-5.92

0.004

Recent stay in intensive care

0.59

0.04*

 No

1.00

-

1.00

-

 Yes

0.79

0.35-1.81

1.83

1.03-3.24

McCabe classification (%)

0.84

0.14*

 Non fatal

1.00

-

-

1.00

-

-

 Fatal within 5 years

0.81

0.36-1.82

0.61

1.70

0.99-2.91

0.05

 Fatal within 6 months

1.11

0.31-4.04

0.87

0.98

0.32-3.00

0.98

Prior exposure to urinary catheter

<0.001*

<0.001*

 No

1.00

-

1.00

-

 Yes

6.77

3.20-14.35

3.04

1.83-5.04

Hemiplegia

0.08*

0.34

 No

1.00

-

1.00

-

 Yes

2.04

0.93-4.46

1.36

0.73-2.54

Immune suppression°

0.39

0.57

 No

1.00

-

1.00

-

 Yes

1.55

0.57-4.18

1.24

0.58-2.65