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Infect Control Hosp Epidemiol. 2009 Mar;30(3):273-6. doi: 10.1086/596020.

Nosocomial infection, length of stay, and time-dependent bias.

Author information

1
Freiburg Centre for Data Analysis and Modelling, University of Freiburg, Germany. jan.beyersmann@fdm.uni-freiburg.de

Abstract

Nosocomial pneumonia and its impact on length of stay are major healthcare concerns. From an epidemiological perspective, nosocomial pneumonia is a time-dependent event. Any statistical analysis that does not explicitly model this time dependency will be biased. The bias is not redeemed by adjusting for baseline information.

PMID:
19193018
DOI:
10.1086/596020
[Indexed for MEDLINE]

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