Skip to main content

Advertisement

Table 3 Observed and estimated ventilator-associated pneumonia (VAP) in ICUs of University of Lyon hospitals (France), January 2001-December 2009

From: Early-onset ventilator-associated pneumonia incidence in intensive care units: a surveillance-based study

  Period of VAP estimation Period of VAP surveillance
Characteristics Day 0 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8
Observed cumulative invasive mechanical ventilation days at risk 1,693.5 5,059.5 8,382.5 10,944.5 12,960.5 14,549.5 15,858.5 16,926.5 17,792.5
Observed number of VAP - - 50 82 77 54 50 31 23
Estimated number of VAP (95% CI) 9 (5-19) 33 (22-50) 57 (46-72) 71 (62-81) 73 (63-83) 64 (55-74) 49 (42-57) 33 (27-40) 20 (14-28)
Observed cumulative incidence of VAP (95% CI) - - 6.0
(4.5-7.8)
12.1
(10.1-14.3)
16.1
(14.1-18.4)
18.1
(16.0-20.4)
19.7
(17.6-22.0)
20.3
(18.3-22.6)
20.6
(18.6-22.8)
Estimated cumulative incidence of VAP (95% CI) 5.3
(2.6-9.8)
8.3
(6.1-11.1)
11.8
(9.7-14.3)
15.5
(13.3-18.0)
18.8
(16.5-21.2)
21.1
(18.8-23.6)
22.5
(20.2-24.9)
23.0
(20.1-25.4)
23.0
(20.8-25.3)
  1. CI: confidence interval