Table 1.
EMS intervals among trauma patients with physiologic abnormality, by site (n=3,656)
| Site | Activation Interval* | Response Interval* |
On-Scene Interval |
Transport Interval |
Total EMS Interval |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Median | IQR | Median | IQR | Median | IQR | Median | IQR | Median | IQR | |
| Birmingham, AL | 0.00 | 0.00-0.50 | 5.00 | 4.00-7.00 | 14.0 | 11.0-18.0 | 9.76 | 6.00-15.0 | 30.0 | 24.0-41.0 |
| Dallas, TX | 0.98 | 0.63-1.40 | 3.82 | 2.58-5.53 | 15.7 | 10.9-21.4 | 8.58 | 5.24-13.2 | 31.5 | 25.0-39.6 |
| Iowa | 0.86 | 0.02-1.53 | 4.00 | 3.00-5.55 | 15.4 | 11.9-20.0 | 7.98 | 4.93-10.2 | 28.1 | 23.3-37.2 |
| Milwaukee, WI | 0.00 | 0.00-1.00 | 3.00 | 3.00-4.00 | 22.0 | 16.0-27.0 | 12.0 | 9.00-15.0 | 38.0 | 32.0-45.0 |
| Ottawa | 0.60 | 0.37-1.00 | 5.44 | 3.88-8.19 | 21.2 | 15.9-27.5 | 9.67 | 6.45-16.0 | 39.3 | 31.2-49.1 |
| Pittsburgh, PA | 1.13 | 0.65-2.00 | 5.60 | 3.62-9.10 | 13.9 | 8.41-25.5 | 10.0 | 6.73-13.5 | 33.4 | 24.2-53.1 |
| Portland, OR | 0.18 | 0.10-0.72 | 4.28 | 3.10-5.94 | 16.8 | 12.4-23.0 | 13.5 | 9.60-18.1 | 36.3 | 29.6-45.9 |
| Seattle/King County, WA | 1.08 | 0.60-1.68 | 3.94 | 3.05-5.18 | 24.1 | 18.6-30.5 | 10.3 | 6.52-17.9 | 42.1 | 32.8-53.1 |
| Toronto | 1.62 | 1.00-2.38 | 4.78 | 3.52-7.45 | 19.1 | 14.4-25.0 | 9.45 | 5.00-15.1 | 37.0 | 29.6-48.1 |
| Vancouver | 1.70 | 1.12-2.68 | 4.99 | 3.16-8.18 | 20.3 | 14.8-29.3 | 10.1 | 6.24-15.5 | 39.0 | 31.1-54.5 |
| United States | 0.82 | 0.08-1.32 | 4.00 | 3.00-5.87 | 18.2 | 13.0-25.5 | 10.2 | 6.66-15.2 | 35.7 | 27.8-45.7 |
| Canada | 1.28 | 0.67-2.15 | 5.00 | 3.53-8.00 | 20.2 | 14.9-27.0 | 9.75 | 5.85-15.4 | 38.1 | 30.5-49.9 |
| Overall | 0.98 | 0.27-1.62 | 4.28 | 3.00-6.30 | 19.0 | 13.4-26.0 | 10.0 | 6.37-15.3 | 36.3 | 28.4-47.0 |
*
Calculation of activation and response intervals include patients who died in the field and had nonmissing values for times (n=914).