title: Effect of external motion on correspondence between infant actigraphy and maternal diary.
abstract: Correspondence between infant actigraphy and mother-recorded diary differed significantly when receiver-operator function area under the curve, correlation, and logistic regression was calculated with and without excluding periods of external motion. External motion occurred in 40% of recording time and significantly changed activity count per epoch.
authors.affiliation: Department of Family and Child Nursing, Box 357262, University of Washington, Seattle, WA 98195-7262, USA.
authors.forename: Shao-Yu
authors.initials: SY
authors.lastname: Tsai
authors.forename: Robert L
authors.initials: RL
authors.lastname: Burr
authors.forename: Karen A
authors.initials: KA
authors.lastname: Thomas