Fig. 3

Interacting and joint effects of triglyceride-glucose index and body mass index on stroke risk. A Associations of triglyceride-glucose index with incident stroke by body mass index; B Joint associations of triglyceride-glucose index and body mass index with incident stroke. a Model 1 was adjusted for age, gender. b Model 2 was adjusted for age, gender, marital status, residence, education level, smoking status, and drinking status. c Model 3 was adjusted as model 2 plus hypertension, diabetes, heart disease, dyslipidaemia, kidney disease, and history of medication use for hypertension, diabetes, and dyslipidaemia. BMI, body mass index; CI, confidence interval; HR, hazard ratio; Q, quartile; TyG, triglyceride-glucose