Associations of heart failure with sleep quality: The rotterdam study

Study Objectives: The prevalence of sleep disturbances and heart failure increases with age. We aimed to evaluate the associations of incident heart failure and cardiac dysfunction with changes in sleep quality. Methods: This prospective population-based study was conducted in the Rotterdam Study. Of the 3,445 eligible persons (mean age 72.0 ± 7.1 years) available for crosssectional analyses, 8.9% (n = 307) had prevalent clinical heart failure. In longitudinal analyses, 1,989 eligible persons (mean age 70.0 ± 5.8 years) were followed for an average of 6.5 ± 0.4 years, of which 4.6% (n = 91) had prevalent or incident clinical heart failure. Heart failure was assessed according to European Society of Cardiology criteria. To estimate cardiac function, we measured left ventricular fractional shortening, left ventricular systolic function, and E/A ratio by echocardiography. Heart failure and cardiac dysfunction were studied with linear regression in rel