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Sleep. 2003 Nov 1;26(7):902-6.

Actigraphy in the assessment of insomnia.

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1
Université Laval, Québec, Canada.

Abstract

OBJECTIVE:

The present study explores the clinical utility and sensitivity of actigraphy as an outcome measure in the treatment of chronic insomnia.

DESIGN:

Following a screening-adaptation night, polysomnography, actigraphy, and sleep-diary data were collected in the sleep laboratory for 2 baseline nights and 2 posttreatment nights.

SETTING:

A university-affiliated sleep disorders center.

PARTICIPANTS:

Seventeen participants with chronic primary insomnia. Mean age was 41.6 years.

INTERVENTIONS:

Participants took part in a treatment protocol investigating different sequential treatments for insomnia (these results are reported elsewhere).

MEASUREMENTS AND RESULTS:

Compared to polysomnography, both actigraphy and sleep-diary instruments underestimated total sleep time and sleep efficiency and overestimated total wake time. Also, actigraphy underestimated sleep-onset latency while the sleep diary overestimated it as compared to polysomnography. Actigraphy data were more accurate than sleep-diary data when compared to polysomnography. Finally, actigraphy was sensitive in detecting the effects of treatment on several sleep parameters.

CONCLUSIONS:

These results suggest that actigraphy is a useful device for measuring treatment response and that it should be used as a complement to sleep-diary evaluation.

PMID:
14655927
[Indexed for MEDLINE]
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