Table 3.
Interactive effects of triglyceride-glucose index and body mass index on incident stroke
| Interactive items | Interactive effects (95% CI) | ||
|---|---|---|---|
| Model 1 a | Model 2 b | Model 3 c | |
| Additive effects | |||
| RERI | 3.40 (− 1.48–8.27) | 3.44 (− 1.46–8.34) | 1.78 (− 1.29–4.86) |
| AP | 0.53 (0.25–0.81) | 0.53 (0.26–0.81) | 0.42 (0.07–0.76) |
| SI | 2.68 (1.43–5.02) | 2.72 (1.45–5.10) | 2.19 (1.12–4.28) |
| Multiplicative effect | 1.59 (0.98–2.58) | 1.62 (1.00–2.63) | 1.40 (0.86–2.27) |
AP, proportion attributable to interaction; CI, confidence interval; RERI, relative excess risk due to interaction; SI, synergy index
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