Table 3.
Association between tertile levels of fT3/fT4 ratio and the risk of MACE.
| Group | Unadjusted | Model 1 | Model 2 | |||
|---|---|---|---|---|---|---|
| HR (95% CI) | P value | HR (95% CI) | P value | HR (95% CI) | P value | |
| fT3/fT4 ratio, per 1SD increase | 0.49 (0.33-0.71) | <0.001 | 0.53 (0.36-0.77) | 0.001 | 0.57 (0.38-0.84) | 0.005 |
| Tertile 1 | 1 (reference) | … | 1 (reference) | … | 1 (reference) | … |
| Tertile 2 | 1.71 (1.12-2.61) | 0.013 | 1.69 (1.11-2.56) | 0.014 | 1.58 (1.05-2.39) | 0.030 |
| Tertile 3 | 2.22 (1.28-3.33) | <0.001 | 2.17 (1.25-3.26) | 0.001 | 2.06 (1.17-3.11) | 0.006 |
Tertile1: fT3/fT4≥2.64, Tertile2: 2.28≤ fT3/fT4 <2.64, Tertile3: fT3/fT4 <2.28. Model 1 included age and sex. Model 2 included age, sex, MI classification (NSTEM or STEMI), hypertension, diabetes and dyslipidemia in the multivariate Cox analysis. fT3, free triiodothyronine; fT4, free thyroxine; HR, hazard ratio; CI, confidence interval; SD, standard deviation.