title: Impact of observation and analysis methodology when reporting hand hygiene data.
authors.forename: A
authors.initials: A
authors.lastname: Stewardson
authors.forename: H
authors.initials: H
authors.lastname: Sax
authors.forename: S
authors.initials: S
authors.lastname: Longet-Di Pietro
authors.forename: D
authors.initials: D
authors.lastname: Pittet
mesh_terms: D003428:Cross Infection / Q000517:prevention & control*; D019983:Guideline Adherence / Q000706:statistics & numerical data*; D006235:Hand Disinfection / Q000379:methods*; D006302:Health Services Research / Q000592:standards*; D006801:Humans; D017053:Infection Control / Q000379:methods*