Table 5.
Always (n = 33) | Sometimes (n = 151) | Rarely (n = 217) | Never (n = 290) | |
---|---|---|---|---|
Total Collisions | ||||
No. | 15 | 49 | 73 | 100 |
Rate per 1,000,000 person-miles | 9.6 | 4.7 | 4.6 | 5.1 |
RR (95% CI) | 1.89 (1.10–3.25) | 0.92 (0.66–1.31) | 0.91 (0.67–1.23) | Reference |
At-Fault Collisions | ||||
No. | 2 | 24 | 31 | 48 |
Rate per 1,000,000 person-miles | 1.3 | 2.3 | 2.0 | 2.5 |
RR (95% CI) | 0.52 (0.13–2.16) | 0.95 (0.58–1.55) | 0.80 (0.51–1.26) | Reference |