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J Clin Sleep Med. 2010 Apr 15;6(2):176-83.

Sleep disturbances, quality of life, and ethnicity: the Sleep Heart Health Study.

Author information

  • 1Arizona State University College of Nursing and Health Innovation, Phoenix, AZ 85004, USA. carol.baldwin@asu.edu

Abstract

STUDY OBJECTIVES:

To compare health-related quality of life (HR-QOL) across subgroups defined by sleep disturbances and ethnicity.

METHODS:

Men (47%) and women (53%) Sleep Heart Health Study participants age 40 and older (N = 5237) underwent overnight polysomnography and completed self-report questionnaires on symptoms of sleep disturbances. The physical and mental composite scales (PCS and MCS) of the Medical Outcomes Study 36-item short form survey assessed HR-QOL and were compared to sleep data.

RESULTS:

Participants self-identified as Caucasian/White (n = 4482, 86%), African American/Black (n = 490, 9%), or Hispanic/Mexican American (n = 265, 5%). The prevalence of obstructive sleep apnea (OSA) was 17%, frequent snoring was 34%, difficulty initiating or maintaining sleep (DIMS; insomnia symptoms) was 30%, and excessive daytime sleepiness (EDS) was 25%. African American participants with frequent snoring, insomnia symptoms, or EDS had significantly poorer physical health compared to Caucasians (p < 0.001). Hispanics with frequent snoring, insomnia symptoms, or EDS had significantly poorer mental health than Caucasian participants (p <0.001). Neither PCS nor MCS scores differed significantly across ethnic subgroups for participants with moderate to severe OSA (respiratory disturbance index > 15, 4% desaturation).

CONCLUSIONS:

Across ethnic/racial subgroups, sleep disturbances are associated with worse physical and better mental HR-QOL than the U.S. norm, but this relationship may be moderated by comorbid health conditions. This study replicates and extends prior research indicating differences among minority and non-minority participants and highlights the need for future studies of sleep disturbances with larger samples of minorities that control for comorbid health conditions.

PMID:
20411696
[PubMed - indexed for MEDLINE]
PMCID:
PMC2854706
Free PMC Article
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