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Table 3 Incidence of HAI in different departments (per 1000 patient-days), 2013–2017

From: Incidence of healthcare-associated infections in a tertiary hospital in Beijing, China: results from a real-time surveillance system

Infection type

Incidence (95% CI)

aIRR (95% CI) b

P-valuea

2013

2014

2015

2016

2017

All HAI

4.10 (3.97, 4.22)

3.41 (3.31, 3.52)

3.96 (3.85, 4.07)

3.78 (3.68, 3.89)

3.62 (3.52, 3.73)

0.99 (0.99–1.00)

0.15

RTI

1.86 (1.78, 1.94)

1.52 (1.46, 1.60)

1.70 (1.63, 1.77)

1.63 (1.56,1.70)

1.56 (1.49, 1.63)

0.98 (0.98–0.99)

0.04*

 VAP

–

–

6.44 (5.47, 7.57)

7.09 (6.13, 8.21)

7.40 (6.38, 8.57)

1.00 (1.00–1.02)

0.11

 Non-VAP

–

–

1.56 (1.50, 1.63)

1.50 (1.43, 1.56)

1.41 (1.35, 1.48)

0.99 (0.98–0.99)

0.02*

BSI

0.53 (0.49, 0.58)

0.54 (0.50, 0.58)

0.62 (0.58, 0.66)

0.62 (0.58, 0.66)

0.65 (0.61, 0.70)

1.01 (1.01–1.02)

< 0.001*

 CLABSI

–

–

0.33 (0.27, 0.41)

0.37 (0.30, 0.44)

0.31 (0.25, 0.39)

1.00 (0.98–1.00)

0.81

 Non-CLABSI

–

–

0.53 (0.50, 0.57)

0.54 (0.50, 0.58)

0.58 (0.55, 0.63)

1.00 (0.99–1.01)

0.15

UTI

0.53 (0.49, 0.58)

0.42 (0.39, 0.46)

0.53 (0.49, 0.57)

0.53 (0.50, 0.58)

0.43 (0.40, 0.47)

1.00 (1.00–1.01)

0.65

 CAUTI

–

–

2.65 (2.38, 2.94)

2.94 (2.66, 3.24)

2.53 (2.27, 2.82)

0.99 (0.99–1.00)

0.43

 Non-CAUTI

–

–

0.23 (0.21, 0.26)

0.23 (0.20, 0.26)

0.17 (0.15, 0.20)

0.98 (0.97–0.99)

< 0.001*

SSI

0.53 (0.46, 0.61)

0.66 (0.58, 0.74)

1.23 (1.18, 1.40)

1.12 (1.02, 1.22)

1.13 (1.03,1.23)

1.02 (1.01–1.02)

< 0.001*

GI

0.31 (0.28, 0.35)

0.24 (0.21, 0.27)

0.29 (0.26, 0.31)

0.29 (0.26, 0.32)

0.27 (0.24, 0.30)

1.00 (0.99–1.00)

0.54

  1. Note. Adjusted by sex and age with data of 2017. aThe change of time trends was tested by negative binomial regression. baIRR = annual incidence rate ratio in 2017. RTI respiratory tract infection, VAP ventilator-associated pneumonia, BSI bloodstream infection, CLABSI central line-associated bloodstream infection, UTI urinary tract infection, CAUTI catheter-associated urinary tract infection, SSI surgical site infection, GI gastrointestinal infection. CI confidence interval. The data (−) were not available