Table 2 Multivariate logistic regression models clustered on hospitals presenting independent factors associated with urinary tract infection stratified on prior exposure to urinary catheter, Swiss-NOSO Nationwide Prevalence Study, 2004

Age groups (%)

0.62

0.03*

 <40 years

1.00

-

-

1.00

-

-

 41-70 years

1.77

0.51-6.10

0.36

1.03

0.31-3.45

0.96

 > = 71 years

1.84

0.54-6.26

0.33

2.53

0.81-7.94

0.11

Recent surgical intervention

0.75

0.59

 No

1.00

-

1.00

-

 Yes

0.92

0.54-1.56

0.84

0.44-1.59

 ASA score (%)

0.09*

0.39

 1 pt

1.00

-

-

1.00

-

-

 2-3 pts

7.21

0.96-54.35

0.06

1.99

0.54-7.28

0.30

 4-5 pts

4.52

0.51-39.74

0.17

1.11

0.18-6.78

0.91

Charlson group

0.55

0.76

 0-3 pts

1.00

-

1.00

-

 > = 4 pts

1.30

0.55-3.08

0.85

0.30-2.40

Length of stay

0.01*

0.09*

 <20 days

1.00

-

-

1.00

-

-

 21-40 days

1.88

0.92-3.85

0.08

2.01

0.95-4.22

0.07

 > = 41 days

2.87

1.34-6.11

0.006

2.12

0.84-5.35

0.11

Recent stay in intensive care

0.99

0.05*

 No

1.00

-

1.00

-

 Yes

1.00

0.58-1.73

2.30

1.01-5.20

McCabe/Jackson (%)

0.95

0.18

 Non fatal

1.00

-

-

1.00

-

-

 Fatal within 5 years

0.98

0.54-1.77

0.95

1.71

0.88-3.31

0.11

 Fatal within 6 months

1.15

0.45-2.93

0.76

0.50

0.06-3.87

0.50

Gender

0.06*

0.001*

 Male

1.00

-

1.00

-

 Female

1.61

0.98-2.65

3.27

1.65-6.48

Hemiplegia

0.78

0.03*

 No

1.00

-

1.00

-

 Yes

1.10

0.55-2.20

2.10

1.07-4.11

Immune suppression°

0.67

0.45

 No

1.00

-

1.00

-

 Yes

1.18

0.54-2.58

1.42

0.57-3.51