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. Author manuscript; available in PMC: 2015 Jul 6.
Published in final edited form as: Accid Anal Prev. 2013 Apr 30;58:70–74. doi: 10.1016/j.aap.2013.04.019

Table 5.

Frequency of Driving with Pets, Motor Vehicle Collisions, and Motor Vehicle Collision Rates

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