Abstract 039: Insomnia And Short Sleep Uniquely Predict Obesity, Hypertension, And Diabetes
Background: Epidemiological evidence of short sleep’s (<6 hours) association with negative cardiometabolic health outcomes continues to mount; yet, the complex relationship between sleep and health is still not well-understood. Sleep problems, such as short sleep (SS) and insomnia (IN), are often analyzed as a singular construct at the population level; however, it has been proposed that, although these two sleep problems likely overlap, they are separate phenomena. The purpose of this study was to: (1) determine if SS and IN were independent constructs; and to (2) evaluate whether SS and IN predicted obesity, hypertension, and diabetes. Methods: Analyses were based on the 2015-2016 National Health and Nutrition Examination Survey (NHANES). NHANES employs a complex, multistage, probability sampling design to survey a representative sample of non-institutionalized U.S. adults (≥18 years). Data related to short (<6), normal (7-8), and long (9+) sleep duration, insomnia (present: mild, moderate, severe), hypertension (present: previous hypertension/hypertension medications/blood pressure in the hypertensive range), and diabetes (present: history of diabetes/fasting blood sugar of 130+) were extracted for analysis. Age, sex, and obesity (body mass index, 30.0+) were entered as covariates into the models. Results: Among the subjects, 0.08% were normal sleepers with IN; 0.21% were SS with insomnia; and, 0.59% had IN with SS. Table 1 summarizes the multivariate and stratified logistic regression models of SS and IN predicting obesity, hypertension, and diabetes. Conclusions: Findings from this study suggested SS and IN are independent constructs, uniquely predicting obesity, hypertension, and diabetes. SS and IN neither mediated nor moderated one another, implying these two sleep outcomes are not additive in nature, but are instead separate health problems. The distinction between SS and IN may have important epidemiological and clinical implications.