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Table 4 Subgroup analysis for the risk of myocardial infarction by baseline TyG index (impact of TyG Q4)

From: Triglyceride–glucose index is associated with the risk of myocardial infarction: an 11-year prospective study in the Kailuan cohort

Variables Group Model 1 Model 2 Model 3
HR (95% CI) Pinteraction HR (95% CI) Pinteraction HR (95% CI) Pinteraction
Age
 < 60 years Q4 2.69 (2.15–3.35) 0.1428 2.39 (1.90–3.00) 0.2935 2.12 (1.69–2.68) 0.3000
 ≥ 60 years Q4 2.43 (1.95–3.02)   2.25 (1.79–2.83)   1.94 (1.53–2.45)  
Sex
Women Q4 5.29 (2.70–10.37) 0.0128 5.13 (2.59–10.18) 0.0164 3.77 (1.86–7.64) 0.0411
Men Q4 2.47 (2.11–2.90)   2.20 (1.86–2.60)   1.93 (1.63–2.29)  
Diabetes
No Q4 2.57 (2.19–3.02) 0.1352 2.28 (1.93–2.69) 0.1430 2.09 (1.77–2.47) 0.1138
Yes Q4 1.56 (0.68–3.57)   1.64 (0.71–3.80)   1.54 (0.66–3.57)  
BMI
 < 28 kg/m2 Q4 2.65 (2.23–3.14) 0.3394 2.43 (2.04–2.90) 0.2573 2.08 (1.74–2.49) 0.4420
 ≥ 28 kg/m2 Q4 2.30 (1.48–3.58)   2.30 (1.48–3.58)   2.07 (1.32–3.23)  
  1. BMI body mass index, CI confidence interval, HR hazard ratio, TyG triglyceride glucose
  2. Model 1, adjusted for age and sex at baseline other than the variable for stratification
  3. Model 2, adjusted for variables in model 1 plus level of education, income, smoking, alcohol abuse, physical activity, and BMI at baseline other than the variable for stratification
  4. Model 3, adjusted for variables in model 2 plus SBP, DBP, a history of hypertension, diabetes mellitus, and dyslipidemia, antidiabetic drugs, lipid-lowering drugs, antihypertensive drugs, HDL-C, LDL-C, and hs-CRP at baseline other than the variable for stratification