Table 2.
Short-period repolarization temporal dispersion variables in study patients
| ECG characteristics | All | Deceased subjects | Survivors | P |
|---|---|---|---|---|
| N = 164 | N = 26 | N = 138 | ||
| QT mean, ms | 447 ± 76 | 458 ± 84 | 445 ± 74 | 0.434 |
| QTSD, ms2 | 6.6 (5.4) | 8.6 (3.9) | 5.9 (5.2) | 0.006 |
| QTVN | 0.24 (0.32) | 0.33 (0.26) | 0.26 (0.33) | 0.015 |
| Te mean, ms | 107 ± 26 | 119 ± 33 | 104 ± 24 | 0.009 |
| TeSD, ms2 | 7.2 (4.2) | 8.7 (2.9) | 6.8 (4.3) | 0.009 |
| TeVN | 4.2 (5.6) | 6.4 (7.3) | 4.1 (7.3) | 0.210 |
Data are expressed as mean ± SD, or median (interquartile range), or number of patients (%).
QT, QT interval; QTVN, variance normalized for mean of QT; Te, Tend.
Bold indicates statistical significance P < 0.05