[Association of frailty index with the risk for cardiovascular disease in adults].

<b>Objective:</b> To explore the association between frailty index (FI) and the risk for cardiovascular disease (CVD) in adults in Inner Mongolia Autonomous Region, and provide new evidence for the prevention of CVD in adults in Inner Mongolia Autonomous Region. <b>Methods:</b> The FI was constructed by using the data from a prospective cohort with a sample size of 25 055 individuals in 6 years of follow-up, and the prevalence of frailty in adults in Inner Mongolia Autonomous Region was described by the FI, and Cox proportional hazard regression model was used to evaluate the association between the FI and the incidence of CVD in adults in Inner Mongolia Autonomous Region. <b>Results:</b> The FI of the study population was 0.24±0.09. The population in the pre-frail (FI: 0.21-0.27) and frail (FI≥0.28) phases had increased risk for CVD compared to non-frail (FI≤0.20) population [pre-frail: hazard ratio (<i>HR</i>)=1.232, 95%<i>CI</i>: 1.127-1.347; frail phase: <i>HR</i>=1.418, 95%<i>CI</i>:1.299-1.548]. For every 0.10 increase in FI, the risk for cardiovascular disease increased by 20.3% (<i>HR</i>=1.203,95%<i>CI</i>:1.156-1.252). <b>Conclusions:</b> In this study, we constructed a FI, which can suggest the risk for CVD. As the increase of frailty degree, the risk for CVD increases.