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Actigraphy-Measured Sleep Characteristics and Risk of Falls in Older Women

Actigraphy-Measured Sleep Characteristics and Risk of Falls in Older Women ORIGINAL INVESTIGATION Actigraphy-Measured Sleep Characteristics and Risk of Falls in Older Women Katie L. Stone, PhD; Sonia Ancoli-Israel, PhD; Terri Blackwell, MA; Kristine E. Ensrud, MD; Jane A. Cauley, DrPH; Susan Redline, MD; Teresa A. Hillier, MD; Jennifer Schneider, MPH; David Claman, MD; Steven R. Cummings, MD Background: Prior studies have suggested that Results: In multivariate-adjusted models, relative to those insomnia and self-reported poor sleep are associated with “normal” nighttime sleep duration (7 to 8 hours per night), the odds of having 2 or more falls in the subse- with increased risk of falls. However, no previous quent year was elevated for women who slept 5 hours or study, to our knowledge, has tested the independent less per night (odds ratio, 1.52; 95% confidence interval, associations of objectively estimated characteristics of 1.03-2.24). This association was not explained by the use sleep and risk of falls, accounting for the use of com- of benzodiazepines. Indexes of sleep fragmentation were monly prescribed treatments for insomnia. also associated with an increased risk of falls. For ex- ample, women with poor sleep efficiency (70% of time Methods: Study subjects were participants in the in bed spent sleeping) had 1.36-fold increased odds of fall- http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA Internal Medicine American Medical Association

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Publisher
American Medical Association
Copyright
Copyright 2008 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
2168-6106
eISSN
2168-6114
DOI
10.1001/archinte.168.16.1768
pmid
18779464
Publisher site
See Article on Publisher Site

Abstract

ORIGINAL INVESTIGATION Actigraphy-Measured Sleep Characteristics and Risk of Falls in Older Women Katie L. Stone, PhD; Sonia Ancoli-Israel, PhD; Terri Blackwell, MA; Kristine E. Ensrud, MD; Jane A. Cauley, DrPH; Susan Redline, MD; Teresa A. Hillier, MD; Jennifer Schneider, MPH; David Claman, MD; Steven R. Cummings, MD Background: Prior studies have suggested that Results: In multivariate-adjusted models, relative to those insomnia and self-reported poor sleep are associated with “normal” nighttime sleep duration (7 to 8 hours per night), the odds of having 2 or more falls in the subse- with increased risk of falls. However, no previous quent year was elevated for women who slept 5 hours or study, to our knowledge, has tested the independent less per night (odds ratio, 1.52; 95% confidence interval, associations of objectively estimated characteristics of 1.03-2.24). This association was not explained by the use sleep and risk of falls, accounting for the use of com- of benzodiazepines. Indexes of sleep fragmentation were monly prescribed treatments for insomnia. also associated with an increased risk of falls. For ex- ample, women with poor sleep efficiency (70% of time Methods: Study subjects were participants in the in bed spent sleeping) had 1.36-fold increased odds of fall-

Journal

JAMA Internal MedicineAmerican Medical Association

Published: Sep 8, 2008

References