title: Statistical artifact in the validation of actigraphy.
authors.forename: Jesse
authors.initials: J
authors.lastname: Gale
authors.forename: T Leigh
authors.initials: TL
authors.lastname: Signal
authors.forename: Philippa H
authors.initials: PH
authors.lastname: Gander
mesh_terms: D004594:Electrophysiology / Q000295:instrumentation*; D006801:Humans; D015203:Reproducibility of Results; D012890:Sleep / Q000502:physiology*