Table 5. Demographic data of the study population (n = 118).
| ECG variable | Value | Score |
| Heart rate, beats/min | < 100 | 0 |
| ≥ 100 | 1 | |
| ST–T-wave abnormalities | Absent | 0 |
| Present | 1 | |
| QRS duration, ms | < 110 | 0 |
| ≥ 110 | 1 |
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