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Table 1 Baseline Characteristics and Risk Factors for Healthcare-Associated Infections

From: A 2-year point-prevalence surveillance of healthcare-associated infections and antimicrobial use in Ferrara University Hospital, Italy

   

Unadjusted logistic regression

Adjusted logistic regression⁑

Patient Characteristics

Patients without HAI

Patientswith HAI

 

95%

CI

 

95%

CI

 
 

n = 987

n = 115

OR

lower

upper

OR

lower

upper

p-value

Sex

 female, n (%)

498 (50.5)

57 (49.5)

1.04

0.70

1.52

    

Age, years

 median [IQR]

71 [56 82]

71 [57 82]

1.01

0.99

1.01

    

Age classes, n (%)

 15–64 years

345 (35.0)

39 (33.9)

Ref

      

 0–1 years

29 (2.9)

3 (2.6)

0.92

0.27

3.14

    

 2–14 years

15 (1.5)

0 (0.0)

    

  > 64 years

598 (60.6)

73 (63.5)

1.08

0.72

1.63

    

McCabe Score, n (%)

 Non-fatal disease

594 (61.0)

30 (27.0)

Ref

      

 Ultimately fatal disease

233 (24.0)

35 (31.5)

2.97

1.78

4.96

    

 Rapidly fatal disease

146 (15.0)

46 (41.5)

6.23

3.80

10.22

2.63

1.59

4.36

0.001

Medical Devices, n (%)

 Presence of PVC

674 (68.3)

81 (71.7)

1.18

0.76

1.81

2.80

1.57

4.99

0.001

 Presence of urinary catheter

346 (35.2)

73 (64.6)

3.36

2.24

5.05

1.78

1.10

2.90

0.019

 Presence of CVC

120 (12.2)

52 (45.2)

5.96

3.94

9.02

3.59

1.98

6.51

< 0.001

 Presence of MV

18 (1.8)

17 (14.9)

9.43

4.71

18.90

4.13

1.68

10.19

0.002

Surgery, n (%)

 None

688 (69.9)

75 (65.2)

Ref

      

 Non-NHSN

148 (15.0)

19 (16.5)

1.18

0.69

2.01

    

 NHSN

149 (15.1)

21 (18.3)

1.29

0.77

2.16

    

Time at risk*, days

 median [IQR]

6 [2 13]

15 [9 29]

1.01

1.003

1.011

    

Time at risk, n (%)

         

  > 6 days

472 (47.8)

103 (89.6)

9.37

5.08

17.24

9.38

4.87

18.08

< 0.001

Year of the survey, n (%)

 2016

478 (48.4)

52 (45.2)

Ref

      

 2018

509 (51.6)

63 (54.8)

1.14

0.77

1.68

    
  1. Abbreviations: HAI Healthcare-Associated Infection, IQR Interquartile Range, PVC Peripheral Vascular Catheter, CVC Central Venous Catheter, MV Mechanical Ventilation, NHSN National Health Safety Network, OR Odds Ratio, CI Confidence Interval, Ref Reference Category
  2. *Time elapsed from date of admission to date of survey
  3. ⁑Model log-likelihood = − 265.84; LR χ2 = 170.8, p < 0.001. Hosmer-Lemeshow χ2 = 6.81, p = 0.4486. Area under receiver operating characteristics curve (AROC) = 0.84. Values in bold are statistically significant (p < 0.05)