Prevalence and Risk Factors of Coronary Heart Disease in Chinese Patients with type 2 Diabetes Mellitus, 2013-2018

Abstract Background: Coronary heart disease (CHD) is the most common cause of death in patients with type 2 diabetes (T2DM). We aim to estimate the prevalence of CHD and cardiovascular risk factors in Chinese diabetic inpatients.Methods: A total of 66536 diabetic inpatients from 2013 to 2018 were investigated, demographic and clinical data were gathered from 30693 patients with T2DM. The age-standardized prevalence of CHD was calculated on the basis of data from Chinese population census in 2010. Multiple imputation was used to impute missing values and logistic regression analysis was used to analyze the risk factors.Results: The crude prevalence of CHD was estimated to be 23.5% and a standardized prevalence was 13.9% (16.0% in men and 11.9% in women). More than half of diabetic patients with CHD have 4 or above of the 5 traditional risk factors, which is much higher than 38.96% of diabetic patients (p<0.01). Multivariate regression analysis showed that diabetes duration, hypertension, smoking, underweight, overweight, obesity, hypoglycemia were significantly associated with a higher risk of CHD (all p<0.05). The odds ratio of CHD in patients having 3, 4, or 5 CHD risk factors were 2.35 (95%CI 1.81- 3.04), 2.96 (95%CI 2.28- 3.85), and 5.29 (95%CI 4.04- 6.93), compared with diabetes patients without any other risk factors.Conclusions: The prevalence of CHD was rather high in Chinese T2DM inpatients, aggregation of CHD risk factors was more seriously, hierarchical CHD prevention strategies based on risk factors are needed for them.