Can actigraphy measure sleep fragmentation in children?

O'Driscoll, D. M.; Foster, A. M.; Davey, M. J.; Nixon, G. M.; Horne, R. S. C.
December 2010
Archives of Disease in Childhood -- Fetal & Neonatal Edition;Dec2010, Vol. 95 Issue 12, p1031
Academic Journal
Objective The gold standard assessment for sleep quality is polysomnography (PSG). However, actigraphy has gained popularity as an ambulatory monitor. We aimed to assess the value of actigraphy in measuring sleep fragmentation in children. Methods 130 children aged 2-18 years referred for assessment for sleep disordered breathing (SDB) were recruited. The arousal index (AI) scored from PSG was compared to the actigraphic fragmentation index (FI) and number of wake bouts/h. Results The ability of actigraphic measures to correctly classify a child as having an AI>10 events/h rated as fair for the FI and poor for wake bouts/h (area under the receiver operator characteristic curve, 0.73 and 0.67, respectively). Conclusion Actigraphy provides only a fair indication of the level of arousal from sleep in children. While the limitations of actigraphy prevent it from being a diagnostic tool for SDB, it still has a role in evaluating sleep/wake schedules in children.


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