Table 5.
Normalization of unstandardized coefficients and final corresponding SEDRSM scores
| Model criteria | β Coefficients | Final score | |
|---|---|---|---|
| Gender, male | 0.773 | 2.789 | 3 |
| Age in years, ≥60 | 0.323 | 1.165 | 1 |
| Heart rate, beat/min | |||
| ≥115 | 0 | 0 | 0 |
| ≤55 | 1.510 | 5.448 | 5 |
| 56–114 | 0.716 | 2.582 | 3 |
| ST elevation, yes | 2.138 | 7.715 | 8 |
| ST depression, yes | 2.382 | 8.597 | 9 |
| Q wave, yes | 1.076 | 3.883 | 4 |
| QT prolongation, yes | 0.372 | 1.341 | 1 |
| AVRR <0.77 | 0.415 | 1.498 | 1 |
| TINN | |||
| 0.11–0.17 | 0 | 0 | 0 |
| <0.11 | 0.712 | 2.571 | 3 |
| >0.17 | 0.277 | 1.000 | 1 |
| HF power <0.07 | 0.531 | 1.916 | 2 |
Risk score ranges from 0 to 37. SEDRSM Singapore emergency department risk stratification model, AVRR average RR, TINN triangular index NN, HF high frequency