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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Am J Geriatr Psychiatry. 2016 Apr 27;24(11):1105–1116. doi: 10.1016/j.jagp.2016.04.003

Figure 2. Multivariable Adjusted Associations of Restless Legs Syndrome and Number of Depressive Symptoms Stratified by Periodic Limb Movement Index, Adjusted Means (95% Confidence Interval).

Figure 2

Adjusted for age, site, race (white vs. nonwhite), body mass index, alcohol use, caffeine intake, smoking status, physical activity, cognitive function, history of stroke, history of diabetes, history of myocardial infarction or congestive heart failure, use of benzodiazepines, use of dopaminergics, education, apnea-hypopnea index. Test for interaction, F[2,979]=3.13. Test for trend from a linear regression model, t[N=447]=3.06.

Abbreviations, IRSS=International RLS Study Group Severity Scale; PLMI=periodic limb movement index.