Table 4. Analysis of clinical outcomes in interhospital transportation of major trauma patients between H-HEMS and GEMS groups.
| Outcomes | H-HEMS | GEMS | P value |
|---|---|---|---|
| ICU stay, day | 8.0 (3.0–16.0) | 3.0 (1.0–8.0) | 0.001 |
| Total number of admission days | 28.0 (13.0–50.0) | 22.0 (12.0–36.5) | 0.331 |
| Actual survival rate | 48 (92.3) | 139 (90.8) | - |
| Predicted survival rate | 43.4 (83.4) | 135.0 (88.3) | - |
| Z statistics | 2.02 | 1.16 | - |
| P value* | 0.043 | 0.246 | - |
| W statistics | 8.87 | 2.85 | - |
Values are presented as median (IQR) or number (%).
H-HEMS, hospital-based helicopter emergency medical services; GEMS, ground ambulance emergency medical services, ICU = intensive care unit, IQR = interquartile range.
*Significance level for Z statistical values.