Sociodemographic characteristics of whiplash subjects in Quebec, 1987

	Study Cohort Members	Whiplash Only	Whiplash Plus Other Injuries	Whiplash Subjects Excluded from Study Cohort¥
Number	3014	1666	1348	1743
% Female	59.7	64.2	54.1	66.7
Age (mean ± SD*)	34.7±13.1	35.3±12.6	34.1±13.6	36.3±13.8
% married or living with common-law spouse	49.3	51.3	46.7	55.6
% with no dependents	76.8	75.6	78.4	78.4
Employment status:
Employed full-time (F/T)	30.4	45.0	46.9	39.9
Not employed F/T but capable of working**	45.8	29.1	32.0	31.7
Other (students, disabled, minors)	3.6	3.1	4.2	3.0
Missing data	20.1	22.7	16.8	25.4
Income ($)
Mean ± SD* for those with employment status	15 666	15 881	15 419	14 776
	±10 768	±11 026	±10 464	±11 054

¥ Excluded because they lacked a police collision report (n=1743)
* SD = standard deviation
** Includes home makers and part-time, casual, and volunteer workers