Table 3.
Geographic Characteristics, Treatment Time Metrics, and Functional Outcomes of Thrombolysis‐Treated Patients, Stratified by Treatment Group
| Characteristic | MSU Care (n=29) | Conventional Care (n=9) | P Value |
|---|---|---|---|
| Population density of pick‐up zip code, 1000 people per square mile | 99.9 (31.1) | 90.2 (28.7) | 0.41 |
| Distance to accepting hospital, miles | 2.0 (1.0) | 1.15 (0.6) | 0.03 |
| Distance to closest DSC, miles | 0.8 (0.4) | 1.0 (0.3) | 0.22 |
| No. of DSCs in 0.5‐mile radius at pick‐up | 0.6 (0.5) | 0.4 (0.7) | 0.34 |
| No. of DSCs in 1.0‐mile radius at pick‐up | 1.5 (1.0) | 0.9 (0.6) | 0.10 |
| No. of DSCs in 2.0‐mile radius at pick‐up | 4.8 (1.3) | 2.7 (2.0) | 0.002 |
| Onset to tPA treatment time | 101.0 (46.5) | 143.9 (49.9) | 0.04 |
| Ambulance arrival to tPA treatment time | 48.3 (13.7) | 84.1 (36.6) | <0.001 |
| Dispatch to tPA treatment time | 61.2 (15.27) | 91.6 (39.2) | 0.001 |
| Dispatch to ambulance arrival time | 12.8 (10.8) | 7.4 (4.2) | 0.16 |
| Ambulance arrival to hospital arrival time | 70.4 (15.3) | 31.3 (19.3) | <0.001 |
| Scene departure to hospital arrival time | 12.4 (7.5) | 10.8 (15.6) | 0.68 |
Numbers are reported as mean (SD) and time metrics are reported in minutes, unless otherwise specified. DSC indicates designated stroke center; MSU, mobile stroke unit; tPA, tissue plasminogen activator.