Fig. 1

Distributions of the three symptom groups with the highest incidences 1-3 years before and 1-3 years after the neck injury – in those neck-injured as well as in the controls. It demonstrates that those with neck injuries had had about the same incidence in the years before as in the years after the neck injury. For symptom-group description, see the group number indicated to the left in Tables 3 and 4. Similar tendencies were seen in most other sickness groups