Table 2: Electrocardiographic and echocardiographic characteristics of the study population.
| Vitamin D deficiency group (n = 200) | Control group (n = 200) | P value | |
| Heart rate (beats/min) | 73.2 ± 9.6 | 72.9 ± 8.4 | 0.842 |
| LVEF (%) | 61.5 ± 2.7 | 60.9 ± 3.3 | 0.335 |
| QT (ms) | 362.3 ± 33.4 | 351.6 ± 24.1 | 0.119 |
| cQT (ms) | 395.7 ± 37.6 | 386.5 ± 24.3 | 0.185 |
| Tpe (ms) | 87.9 ± 13.2 | 77.1 ± 4.5 | < 0.001 |
| Tpe/QT | 0.24 ± 0.03 | 0.21 ± 0.02 | < 0.001 |
| Tpe/cQT | 0.22 ± 0.02 | 0.19 ± 0.02 | < 0.001 |
LVEF: Left ventricular ejection fraction; QT: QT interval; cQT: Corrected QT interval; Tpe: Tpeak to Tend interval.