Factors associated with differences in lag time
| Total | BWH | KUH | ||
| Profession of reporter | Physician | 3.6 (7.1) | 2.8 (8.7) | 4.3 (5.2) |
| Non-physician | 1.8 (4.0) | 1.0 (3.8) | 3.0 (4.0) | |
| p Value | <0.0001 | <0.0001 | <0.0001 | |
| Severity of injury | Major | 4.1 (6.2) | 3.1 (6.7) | 4.9 (5.8) |
| Minor | 1.9 (4.2) | 1.0 (4.1) | 3.0 (4.1) | |
| p Value | 0.0006 | 0.02 | 0.06 | |
| Year | 2004 | 1.9 (3.8) | 1.0 (3.7) | 3.0 (3.6) |
| 2005 | 1.9 (4.5) | 1.1 (4.4) | 3.1 (4.4) | |
| p Value | 0.88 | 0.19 | 0.98 | |
| Total | 1.9 (4.2) | 1.0 (4.1) | 3.1 (4.1) | |
BWH, Brigham and Women's Hospital; KUH, Kyoto University Hospital.
Data are shown as mean (SD) in days. Hypothesis testing was performed using Wilcoxon rank sum tests.