Table 3.
Selection of variables for inclusion in multivariable models
| Predictor variable | Incidence of variable selection | Wald test p-value | ||||
|---|---|---|---|---|---|---|
| GCS (sum) model | GCS (components) model | AVPU model | GCS (sum) model | GCS (components) model | AVPU model | |
| Location | 50 | 50 | 50 | 0.002 | 0.004 | 0.003 |
| Age | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.001 |
| Gender | 0 | 0 | 0 | – | – | – |
| Resps | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.001 |
| SpO2 | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.001 |
| Pulse | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.001 |
| SBP | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.001 |
| DBP | 0 | 0 | 0 | – | – | – |
| Temp | 50 | 50 | 50 | < 0.001 | < 0.001 | < 0.01 |
| BM | 1 | 1 | 0 | 0.86* | 0.85* | 0.87* |
| Skin | 50 | 50 | 50 | 0.007 | 0.007 | 0.014 |
| CBRT | 0 | 0 | 0 | – | – | – |
| RPupilReact | 11 | 12 | 8 | 0.42* | 0.41* | 0.46* |
| RPupilSize | 0 | 0 | 0 | – | – | – |
| GCS_sum | 50 | NA | NA | < 0.001 | NA | NA |
| GCS_eye | NA | 0 | NA | NA | – | NA |
| GCS_verbal | NA | 50 | NA | NA | < 0.001 | NA |
| GCS_motor | NA | 0 | NA | NA | – | NA |
| AVPU | NA | NA | 50 | NA | NA | < 0.001 |
SpO2 peripheral oxygen saturation, SBP systolic blood pressure, DBP diastolic blood pressure, Temp temperature (C), BM blood sugar mmol/L, CBRT capillary bed refill time, GCS Glasgow coma score, AVPU alert, verbal, pain or unresponsive
*Did not reach statistical significance