Subjects’ baseline characteristics (n = 1005). Values are n (%) unless specified.
| Variables | Men*, 406 (40.4) | Women*, 599 (59.9) | p |
|---|---|---|---|
| Demographic factors | |||
| Age, yrs | |||
| 18–29 | 97 (23.9) | 150 (25.0) | NS |
| 30–39 | 122 (37.7) | 202 (33.7) | |
| 40–49 | 93 (22.9) | 130 (21.7) | |
| 50 and over | 94 (23.2) | 117 (19.5) | |
| Education | |||
| Less than high school | 60 (14.8) | 73 (12.2) | NS |
| High school | 223 (55.1) | 283 (47.4) | |
| University | 122 (30.1) | 241 (40.4) | |
| Prior health factors | |||
| General health the month before motor vehicle collision | |||
| Excellent | 218 (54.0) | 237 (39.6) | 0.000 |
| Very good | 105 (26.0) | 202 (33.8) | |
| Good | 58 (14.4) | 123 (20.6) | |
| Fair | 14 (3.5) | 28 (4.7) | |
| Poor | 9 (2.2) | 8 (1.3) | |
| Neck pain the month before motor vehicle collision | |||
| Never | 313 (77.1) | 358 (59.8) | 0.000 |
| Sometimes | 84 (20.7) | 213 (35.6) | |
| Very often | 2 (0.5) | 18 (3.0) | |
| Every day | 7 (1.7) | 10 (1.7) | |
| Headache the month before motor vehicle collision | |||
| Never | 284 (70.0) | 339 (56.6) | 0.000 |
| Sometimes | 119 (29.3) | 242 (40.4) | |
| Very often | 2 (0.5) | 15 (2.5) | |
| Every day | 1 (0.2) | 3 (0.5) | |
↵* Total number differs due to missing data.