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Table 1: 

Clinical characteristics of the 91 patients with follow-up MR imaging 12 months after whiplash injury


n%Median (Range)
Clinical characteristics at the acute phase of injury
    Women5358.1
    Age (yr)29.2 (18.1–69.2)
    Initial neck pain intensity, NRS-11 score (0–10)4.0 (1.0–9.0)
Crash-related factors
    Rear-end collision6065.9
    Head turned at impact (n = 77)2633.8
    Head injury at crash99.9
    Seat belt used at impact8896.7
    Head restraint present at impact (n = 87)7586.2
    Patient car speed at impact (km/h; n = 91)0.0 (0.0–75.0)
    Relative car speeda at impact (km/h; n = 69)45.0 (10.0–150.0)
Clinical characteristics at follow-up
    Last week's neck pain intensity, NRS-11 score2.0 (0.0–8.0)
    Neck disability, NDI score (%)8.0 (0.0–64.0)
  • 


    ↵a Difference between vehicle speeds if rear-end collision; otherwise, sum of vehicle speeds.