TABLE 2.
Contemporary analytical approaches to sudden cardiac death risk stratification in Health Survey 2000
| Electrocardiographic marker | Multivariable adjusted odds ratio for sudden cardiac death (95% CI) | Significance (p values) |
|---|---|---|
| Interval markers in single leads | ||
| QTNC | 1.2 (1.01–1.5) | .044 |
| QTF | 1.2 (0.996–1.5) | .054 |
| Tpeak–Tend in lead V5 | 0.9 (0.8–1.2) | .620 |
| Vectorcardiographic markers | ||
| Principal component analysis ratio | 1.1 (0.9–1.4) | .367 |
| T‐wave morphology dispersion | 1.4 (1.1–1.7) | .001 |
| Total cosine R‐to‐T | 1.3 (1.1–1.6) | .013 |
| T‐wave residuum | 1.2 (1.0–1.5) | .050 |
| Second central moment in multiple leads | ||
| RWH (≥470 mV) | 1.2 (0.8–2.0) | <.05 |
| JWH (≥123 mV) | 2.0 (1.2–3.3) | <.01 |
| TWH (≥102 mV) | 1.7 (1.0–2.9) | <.05 |
| JWH + TWH | 2.9 (1.5–5.7) | <.01 |
| RWH + JWH + TWH | 3.2 (1.4–7.1) | <.01 |
Abbreviations: CI, confidence interval; JWH, J‐wave heterogeneity; QTF, QT interval with the Frederica formula for adjustment of heart rate; QTNC, QT interval with the nomogram method for adjustment of heart rate; RWH, R‐wave heterogeneity; TWH, T‐wave heterogeneity.