title: Comparing sleep measures of infants derived from parental reports in sleep diaries and acceleration sensors.
abstract: OBJECTIVE
  Comparing sleep measures of infants derived from two data collection methods, acceleration sensors and sleep diaries, and identify the clinical application for each data collection method.
  
  
  METHODS
  The participants were 52 pairs of infants and mothers. Infant sleep measures were obtained through the actigraphs (Micro-mini RC, Ambulatory Monitoring Inc., Ardsley, NY, USA) and sleep diaries for over a period of 7 days.
  
  
  RESULTS
  The results showed that the concordance in sleep measures derived from two methods showed decreases in the following order: sleep offset time [r=0.91 (p=0.00)], sleep onset time r=0.89 (p=0.00), nocturnal sleep duration [r=0.75 (p=0.00)], the number of night wakings [r=0.46 (p<0.01)] and WASO [r=0.34 (p<0.05)]. It was revealed that the accuracy of sleep diary records was affected by the sleeping place and varied throughout the study period.
  
  
  CONCLUSIONS
  It was confirmed that the sleep measures indicating sleep schedule reported from the sleep diaries had high concordances compared with the data from the actigraphs. Using the sleep diary was recommended to understand behaviours when focusing on infant's daily rhythms. In terms of accuracy and stability of recording throughout the study period, understanding sleep quality and independence of sleeping places, the choice of actigraph was recommended.
authors.affiliation: Konan Women's University, Faculty of Nursing and Rehabilitation, Kobe University Graduate School of Health Sciences, Kobe, Hyogo, Japan. asaka@konan-wu.ac.jp
authors.forename: Yoko
authors.initials: Y
authors.lastname: Asaka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takada
mesh_terms: D056044:Actigraphy; D001513:Beds; D005260:Female; D006801:Humans; D007223:Infant; D018730:Infant Behavior; D008297:Male; D009035:Mothers; D012890:Sleep; D011795:Surveys and Questionnaires