Multiple sleep dimensions and type 2 diabetes risk among women in the Sister Study: differences by race/ethnicity.

Objective: Poor sleep has been associated with type 2 diabetes. Since racial/ethnic minorities experience a disproportionately high prevalence of poor sleep and type 2 diabetes, we sought to determine the relationships between multiple sleep dimensions and incident type 2 diabetes and to investigate if these relationships vary by race/ethnicity.

Research Design And Methods: Prospective data were analyzed from the Sister Study, which enrolled 50 884 women from 2003 to 2009.