Background The triglyceride-glucose (TyG) index and triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio, two simple surrogate indicators of insulin resistance, have been demonstrated to predict cardiovascular disease (CVD). However, very few studies have investigated their associations with CVD in European populations. Methods A total of 403,335 participants from the UK Biobank with data for TyG index and TG/HDL-C ratio and free from CVD at baseline were included. Cox models were applied to evaluate the association between TyG index and TG/HDL-C ratio and incident CVD. Mediation analyses were performed to evaluate the contribution of prevalent diabetes, hypertension, and dyslipidemia to observed associations. Results During a median follow-up of 8.1 years, 19,754 (4.9%) individuals developed CVD, including 16,404 (4.1%) cases of CHD and 3976 (1.0%) cases of stroke. The multivariable-adjusted hazard ratios of total CVD in higher quartiles versus the lowest quartiles were 1.05, 1.05, and 1.19, respectively, for TyG index, and 1.07, 1.13, and 1.29, respectively, for TG/HDL-C ratio. There were significant trends toward an increasing risk of CVD across the quartiles of TyG index and TG/HDL-C ratio. In mediation analyses, dyslipidemia, type 2 diabetes, and hypertension explained 45.8%, 27.0%, and 15.0% of TyG index’s association with CVD, respectively, and 40.0%, 11.8%, and 13.3% of TG/HDL-C ratio’s association with CVD, respectively. Conclusions Elevated baseline TyG index and TG/HDL-C ratio were associated with a higher risk of CVD after adjustment for the well-established CVD risk factors. These associations were largely mediated by greater prevalence of dyslipidemia, type 2 diabetes, and hypertension.
Background: We projected global trends in ischemic stroke from 2020 to 2030 according to age, sex, and socio-demographic index (SDI) quintile. Methods: Estimated annual percentage changes (EAPCs) were used to project trends in the incidence of deaths from and disability-adjusted life years (DALYs) due to ischemic stroke between 2020 and 2030. EAPCs were computed using generalized additive models and data from the Global Burden of Disease study during the 1990 to 2019 period. Results: The global age-standardized incidence rate of ischemic stroke was projected to increase to 89.32 per 100 000 population in 2030 (EAPC=0.89), whereas the associated global age-standardized death and DALY rates were projected to decrease to 18.28 (EAPC, −3.58) and 500.37 per 100 000 (EAPC=−1.75), respectively, in 2030. The projections indicated a higher age-standardized incidence rate of ischemic stroke among women than among men in 2030 (90.70 versus 87.64 per 100 000). The incidence rate of ischemic stroke was projected to increase across all age groups and SDI quintiles between 2020 and 2030. At the national level, the greatest increase in the age-standardized incidence rate of ischemic stroke between 2020 and 2030 was projected to occur in Cyprus (EAPC=4.16), followed by Palestine (EAPC=3.50) and South Africa (EAPC=2.64). Additionally, the projections suggested increases in the age-standardized death and DALY rates due to ischemic stroke for countries in low-SDI quintiles (EAPC=3.68 and EAPC=5.30, respectively). Conclusions: The projections indicated that the incidence rate of ischemic stroke will increase both sexes, all age groups, and all SDI quintiles and in some countries between 2020 and 2030. Furthermore, countries with a low SDI should be aware of potential increases in the age-standardized death and DALY due to ischemic stroke.
Background and Objectives:To estimate the rates of incidence, death, and disability-adjusted life years (DALYs) of ischemic stroke in young adults aged 15–49 years, and the relevant risk factors by sex, age group, and socio-demographic index (SDI) in 204 countries and territories.Methods:Data from the Global Burden of Diseases, Injuries, and Risk Factors study (GBD) 2019 were used. The estimated annual percentage changes (EAPCs) were calculated to evaluate the temporal trends from 1990 to 2019. We also estimated the risk factors contributing to DALYs resulting from ischemic stroke.Results:From 1990 to 2019, the global age-standardized incidence (EAPC = -0.97), death (EAPC = -0.11), and DALYs rates (EAPC = -0.55) of ischemic stroke in young adults decreased. The largest increases in age-standardized incidence, death, and DALYs rates was observed in the low and low-middle SDI quintiles. At the regional level, North Africa and the Middle East, and Southeast Asia showed the largest increases in the age-standardized incidence, death and DALYs rates of ischemic stroke. The age-standardized incidence rate was higher among young women than among young men in 2019. Globally, a high environmental temperature, high body mass index (BMI), and a high fasting plasma glucose contributed to the largest increases in age-standardized DALYs rates between 1990 and 2019. In the same period, the largest increases in the age-standardized DALYs rates in high- and low-SDI regions were attributable to high environmental temperatures and alcohol use, respectively.Discussion:The burden of ischemic stroke in young adults continues to increase in low-SDI regions such as North Africa and the Middle East, and Southeast Asia. There were differences in the primary risk factors related to the burden of ischemic stroke in different SDI regions. Targeted implementation of cost-effective policies and interventions is an urgent need to reduce the burden of ischemic stroke in young adults.
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