Frequency distribution of neck pain before and after rear end car collision, and in matched controls
| Frequency of neck pain | Accident victims before accident n=210 | Controls at identification n=210 | Accident victims after 2 months n=198 | Accident victims after 1 year n=200 | Controls after 1 year n=193 |
|---|---|---|---|---|---|
| No neck pain | 148 (70%) | 146 (70%) | 132 (67%) | 140 (70%) | 114 (59%) |
| Neck pain | |||||
| < 1 day per month | 37 (18%) | 38 (18%) | 36 (18%) | 27 (14%) | 39 (20%) |
| 1-7 days per month | 18 (8.6%) | 16 (7.6 %) | 18 (9.1%) | 25 (13%) | 28 (15%) |
| 8-15 days per month | 2 (1.0%) | 4 (1.9%) | 3 (1.5%) | 3 (1.5%) | 4 (2.1%) |
| > 15 days per month | 1 (0.5%) | 3 (1.4%) | 2 (1.0%) | 0 (0.0%) | 1 (0.5%) |
| Every day | 4 (1.9%) | 3 (1.4%) | 7 (3.5%) | 5 (2.5%) | 7 (3.6%) |