Backgrounds: Inadequate sleep duration is associated with a higher risk of type 2 diabetes
and the relationship is nonlinear. We aim to assess the curve relationship between night
sleep duration and the incidence of type 2 diabetes in China. Methods: A cohort of 11,539
participants from the REACTION study without diabetes at baseline (2011) were followed
until 2014 for the development of type 2 diabetes. The average number of hours of sleep per
night was grouped. Incidence rates and odds ratios (ORs) were calculated for the …

Objective: We assess the relationship between night sleep duration and the incidence of
type 2 diabetes in China. Methods: We used logistic regression models to estimate odds
ratios (ORs) and 95% con dence intervals (CIs) for the incidence of type 2 diabetes among
11,539 participants at baseline from the REACTION cohort. Results: Compared to people
who sleep for 7-8 h/night, people with a longer sleep duration (≥ 9 hours/night) had a
greater risk of type 2 diabetes (hazard ratio [OR] 1.27; 95% con dence interval [CI] 1.01 …