https://www.selleckchem.com/products/jtc-801.html In subgroup analyses on cohort studies, positive correlation between short sleep duration and metabolic syndrome was observed in both Asian (RR=1.10, 95%CI 1.07-1.13) and in Caucasians (RR=1.56, 95%CI 1.08-2.26) populations. Conclusions Results of this study revealed an association between metabolic syndrome and the duration of sleep. We understand that sleep is a behavior that can be changed step by step, through adequate intervention programs, to reduce the risk of metabolic syndrome which has become an important public health issue.Objective To study the association of duration and quality of sleep with metabolic syndrome. Methods Multi-stage cluster random sampling method was used to extract data from the '2015 adult chronic disease and nutrition monitoring population project' from 42 communities of 7 districts in Tianjin. A total of 1 388 residents aged 45 to 59 years old were selected to analyze the relationship between both duration and quality of sleep and the metabolic syndrome. χ(2) test, non-conditional logistic regression and classification tree models were used for data analysis. Result The prevalence of metabolic syndrome appeared as 30.4%, 37.4 % and 43.1% in the poor, common or well sleep groups respectively. The prevalence rates of metabolic syndrome in the sleep time 7.5 h, 6.0-7.5 h groups were 36.5% and 30.6% respectively. After adjusting for gender and age, results from the logistic regression analysis showed that short or long sleep duration, as well as poor sleep quality all appeared as risk factors on metabolic syndrome (P less then 0.05). According to the classification tree model, factors as gender (importance 0.004, standardized importance 100%), quality of sleep (importance 0.004, standardized importance 99.5%), duration of sleep (importance 0.002, standardized importance 38.6%), education level (importance 0.001, standardized importance 22.3%) and salt intake (importance 0.001, standardiz