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Association of sleep duration with rheumatoid arthritis in Korean adults: analysis of seven years of aggregated data from the Korea National Health and Nutrition Examination Survey (KNHANES).

Association of sleep duration with rheumatoid arthritis in Korean adults: analysis of seven years of aggregated data from the Korea National Health and Nutrition Examination Survey (KNHANES).
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Kim JH, Park EC, Lee KS, Lee Y, Shim S, Kim J, Chon D, Lee SG,


Kim JH, Park EC, Lee KS, Lee Y, Shim S, Kim J, Chon D, Lee SG, (click to view)

Kim JH, Park EC, Lee KS, Lee Y, Shim S, Kim J, Chon D, Lee SG,

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BMJ open 2016 12 136(12) e011420 doi 10.1136/bmjopen-2016-011420
Abstract
OBJECTIVES
To investigate the association between rheumatoid arthritis (RA) and self-reported sleep duration.

SETTING
The present study analysed 7 years of aggregated cross-sectional data (2007-2013) from the Korea National Health and Nutrition Examination Surveys (KNHANES).

PARTICIPANTS
A total of 37 979 individuals were selected for the analyses.

INTERVENTIONS
RA.

PRIMARY AND SECONDARY OUTCOME MEASURES
Sleep duration.

RESULTS
After adjusting for confounding factors, the odds of short-duration sleepers (≤6 hours/day) and long-duration sleepers (≥9 hours/day) for RA were 1.23-fold (95% CI 1.101 to 1.51) and 1.27-fold (95% CI 0.85 to 1.88) higher, respectively, than those for persons with sleep duration of 7-8 hours/day. A subgroup analysis according to the extent of pain in RA revealed that the strong relationship between RA and sleep disturbances was observed in those with high pain from RA (OR: 1.28 CI 1.04 to 1.58).

CONCLUSIONS
Individuals with RA may be at a higher risk for sleep disturbances compared with individuals without RA. Therefore, the provision of comprehensive care for patients with RA by healthcare professionals should include assessments of sleep duration and patients with RA should be encouraged to report sleep problems.

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