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. Author manuscript; available in PMC: 2021 Aug 23.
Published in final edited form as: Clin Infect Dis. 2014 Dec 23;60(8):1153–1161. doi: 10.1093/cid/ciu1173

Table 3.

Effect of Intervention Bundle on Clinical Cultures and Blood Culture Contamination

Outcome Preinterventiona
 Interventiona
 Change in
Event Rate		 P
Value
No. of
Events		 Events/1000
Patient-days		 95% CI No. of
Events		 Events/1000
Patient-days		 95% CI
KPC in any clinical culture 656 3.7 3.4–4.0 285 2.5 2.2–2.8 −1.2 .001
KPC bloodstream infection 165 0.9 .8–1.1 48 0.4 .3-.5 −0.5 .008
Bloodstream infection due to any pathogen 2004 11.2 10.7–11.7 870 7.6 7.1–8.1 −3.6 .006
Contaminated blood culture 865 4.9 4.5–5.2 261 2.3 2.0–2.6 −2.6 .03

Abbreviations: CI, confidence interval; KPC, Klebsiella pneumoniae carbapenemase–producing Enterobacteriaceae.

a

There were 178 516 patient-days in the preintervention period and 114 070 patient-days in the intervention period.