Fig. 2

Adjusted dose-response association between triglyceride glucose index levels and the risk of all-cause mortality in middle-aged patients (a) and old patients (b). TGI was coded using a restricted cubic spline function with four knots located at the 25th, 50th, 75th, and 95th percentiles of the distribution of TGI. Reference TGI value is 8.74 in (a) and 8.65 in (b). Y-axis represents the adjusted hazard ratios of all-cause mortality risk when comparing patients with any value of TGI with patients with the reference value of TGI. Dashed lines are 95% confidence intervals. Adjusted factors included age, sex, systolic blood pressure, BMI, waist, diabetes, hypertension, dyslipidemia, drinking, smoking, white blood cells, platelet, creatinine, hematocrit, hemoglobin, glycated hemoglobin, HDL, LDL, total cholesterol, and vigorous physical activity. Abbreviation: TGI, triglyceride glucose index, BMI, body mass index, HDL, high-density lipoprotein, LDL, low-density lipoprotein