Nosocomial Infection, Length of Stay, and Time-Dependent Bias

作者:Beyersmann Jan*; Kneib Thomas; Schumacher Martin; Gastmeier Petra
来源:Infection Control and Hospital Epidemiology, 2009, 30(3): 273-276.
DOI:10.1086/596020

摘要

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.