Table 2.
Heritability of ECG parameters for Low, Medium, and High heart rate Holter and resting ECG.
| Parameter | Best Model | ECG type | Heritability (99% CI) |
|---|---|---|---|
| TpTe | AE | Low | 56% (32–73) |
| Medium | 63% (36–79) | ||
| High | 52% (21–73) | ||
| Resting | 56% (30–72) | ||
| Th | AE | Low | 72% (53–83) |
| Medium | 68% (49–80) | ||
| High | 58% (36–73)* | ||
| Resting | 55% (31–71)* | ||
| QT | AE | Low | 69% (48–82) |
| Medium | 58% (33–75) | ||
| High | 34% (14–53)** | ||
| Resting | 40% (18–58)** | ||
| QRS | AE | Low | 41% (10–64) |
| Medium | 41% (13–63) | ||
| High | 42% (14–62) | ||
| Resting | 32% (7–55) |
Asterisks denote statistical difference compared to low rate Holter where
**
p < 0.01 and
*
p < 0.05.
Full statistical analysis is presented in Supplemental Table 5.