Table 2.

Frequency of patient characteristics versus presence of moderate or severe neck pain at ED. (n=89)

	Moderate to Severe Neck Pain in the Emergency Department in the Hours after MVC
Characteristics	Yes (%)	No (%)	Relative Risk (95% CIa)
Age < 40	57	44	1.28 (.85 – 1.93)
Female Gender	64	53	1.24 (.83 - 1.85)
Income < $20,000 per year	33	17	1.67 (.88 - 3.17)
High school education or less	29	16	1.52 (.81 - 2.85)
Car drivable after MVC	67	67	1.00 (.61 – 1.62)
Rear-ended	50	38	1.28 (.83 - 1.96)
Airbags Deployed	24	34	.79 (.52 - 1.20)
COMT pain vulnerable genotype*	76	41	2.11 (1.33 - 3.37)

^*Defined as COMT genotype which does not contain one or more “low pain sensitivity”⁷ haplotypes