Table 3.
Risk for SCD Associated With Mean Spatial TT′ Angle in Clinically Relevant Subgroups
| Subgroup | Hazard Ratio (95% CI) | P Value | P Interaction |
|---|---|---|---|
| Male (146 SCDs/n=6028) | 1.056 (0.987 to 1.130) | 0.11 | 0.091 |
| Female (83 SCDs/n=7669) | 1.131 (1.063 to 1.203) | <0.0001 | |
| Aged ≥55 years (145 SCDs/n=6318) | 1.001 (0.949 to 1.057) | 0.96 | 0.009 |
| Aged <55 years (84 SCDs/n=7379) | 1.096 (1.043 to 1.152) | <0.0001 | |
| White (139 SCDs/n=10 420) | 1.056 (0.985 to 1.131) | 0.13 | 0.54 |
| Black (90 SCDs/n=3277) | 1.115 (1.054 to 1.179) | <0.0001 | |
| CVD, Yes (74 SCDs/n=1160) | 1.083 (1.010 to 1.162) | 0.027 | 0.35 |
| CVD, No (155 SCDs/n=12 537) | 1.092 (1.032 to 1.157) | 0.002 | |
| Diabetes, Yes (71 SCDs/n=1499) | 1.104 (1.014 to 1.201) | 0.022 | 0.23 |
| Diabetes, No (158 SCDs/n=12 198) | 1.082 (1.029 to 1.137) | 0.002 | |
| Hypertension, Yes (128 SCDs/n=4368) | 1.102 (1.045 to 1.162) | <0.0001 | 0.86 |
| Hypertension, No (101 SCDs/n=9275) | 1.056 (0.975 to 1.144) | 0.18 |
All models are fully adjusted (model 3 of Table 2) Cox regression models. CVD indicates cardiovascular disease; SCD, sudden cardiac death; TT′ angle, angle between consecutive T‐wave vectors.