Table 2.
Baseline electrocardiographic characteristics of acute coronary syndrome patients according to depressive symptoms by Beck Depression Inventory score
| BDI < 5 | BDI ≥ 10 | P value | |
|---|---|---|---|
| Women (n= 139) | |||
| Heart rate (bpm) | 68.0 (11.2) | 70.2 (12.0) | 0.29 |
| PR interval (ms) | 168.0 (23.7) | 160.8 (18.8) | 0.06 |
| QTcF (ms) | 408.6 (24.3) | 435.4 (26.6) | <0.01 |
| QTNc (ms) | 410.0 (23.3) | 434.4 (28.9) | <0.01 |
| ECG-LVH | 7.7 % | 23.8 % | 0.02 |
| Q waves | 14.8 % | 18.8 % | 0.65 |
| ST depression ≥1 mm | 11.1 % | 16.5 % | 0.46 |
| Men (n= 243) | |||
| Heart rate (bpm) | 68.9 (13.7) | 66.5 (12.4) | 0.15 |
| PR interval (ms) | 171.8 (33.1) | 172.0 (29.1) | 0.97 |
| QTcF (ms) | 412.0 (25.8) | 415.4 (23.6) | 0.29 |
| QTNc (ms) | 414.0 (25.6) | 417.2 (29.0) | 0.38 |
| ECG-LVH | 11.0 % | 13.5 % | 0.55 |
| Q waves | 23.3 % | 15.5 % | 0.15 |
| ST depression ≥1 mm | 11.6 % | 14.4 % | 0.56 |
Numbers in parentheses represent standard deviation for continuous measures.
bpm, beats per minute; ms, milliseconds; LVH, left ventricular hypertrophy; QTcF, QT corrected for heart rate using Fridericia's method; QTNc, QT corrected for heart rate using the nomogram-based method.