Table 3.
Evaluation of Use of ICU and Number of ICU Days based on Scene or Transfer Status and the Effect of SI via Regression Coefficients.
| SCENE | TRANSFER | |||
|---|---|---|---|---|
|
| ||||
| VARIABLE╲RESPONSE | Need for ICU Stay (Binomial Logistic) |
Number of Days in ICU (Poisson) |
Need for ICU Stay (Binomial Logistic) |
Number of Days in ICU (Poisson) |
| SI-EMS | 1.022 | 0.6540 † | 1.425 | 1.360 † |
| 95% CI | −2.869 – 2.330 | 0.2480 – 1.060 | −0.5403 – 3.390 | 0.5440 – 2.177 |
|
| ||||
| ΔSI: SI-EMS to SI-DC | 2.883 ‡ | 0.2778 | ---- | ---- |
| 95% CI | 1.430 – 4.335 | −0.1363 – 0.6910 | --- | --- |
|
| ||||
| ΔSI: SI-EMS to SI-TX | --- | --- | 1.114 | 0.4692 |
| 95% CI | --- | --- | −0.9475 – 3.175 | −0.1889 – 1.127 |
|
| ||||
| ΔSI: SI-TX to SI-DC | --- | --- | 2.469 † | 0.8376 † |
| 95% CI | --- | --- | 0.6136 – 4.325 | 0.2954 – 1.380 |
|
| ||||
| Hypotension | 2.671 † | 0.2817 | 1.490 | −0.4995 |
| 95% CI | 1.044 – 4.298 | −0.1442 – 0.7075 | −0.8435 – 3.824 | −1.255 – 0.2559 |
|
| ||||
| Transport Time | 0.0004 | −0.0027 ** | −0.0012 | 0.0016 ‡ |
| 95% CI | −0.0039 – 0.0030 | −0.0052 - −0.0002 | −0.0034 – 0.0012 | 0.0009 – 0.0024 |
The significance is indicated by p-value<0.10 (*), p-value<0.05 (**), p-value <0.01 (†), p-value <0.001 (‡)
ICU: intensive care unit; SI: shock index, SI-EMS: emergency medical services shock index; ΔSI: change in shock index; SI-DC: shock index at definitive are center; SI-TX: shock index at transferring facility