title: Nosocomial infection, length of stay, and time-dependent bias.
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.
authors.affiliation: Freiburg Centre for Data Analysis and Modelling, University of Freiburg, Germany. jan.beyersmann@fdm.uni-freiburg.de
authors.forename: Jan
authors.initials: J
authors.lastname: Beyersmann
authors.forename: Thomas
authors.initials: T
authors.lastname: Kneib
authors.forename: Martin
authors.initials: M
authors.lastname: Schumacher
authors.forename: Petra
authors.initials: P
authors.lastname: Gastmeier
mesh_terms: D015982:Bias; D003428:Cross Infection / Q000453:epidemiology*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D013997:Time Factors