Table 3.

General linear models examining the relationship of OPRM1 allele A118G on overall pain severity six weeks after motor vehicle collision (MVC) among all men and women and among men and women with substantial peritraumatic distress after MVC

Independent variablea	Beta	SE	P
In all women (n = 575)
A118G allele	−0.264	0.268	0.324
Age	0.013	0.009	0.146
Education	−0.291	0.091	0.001
Income	−0.185	0.068	0.007
Pain at the time of initial evaluation	0.044	0.006	0.000
Pain prior to MVC	0.014	0.051	0.780
In women with peritraumatic distress (n = 256)
A118G allele	−0.925	0.375	0.014
Age	0.022	0.013	0.100
Education	−0.170	0.135	0.205
Income	−0.230	0.102	0.024
Pain at the time of initial evaluation	0.041	0.008	<0.001
Pain prior to MVC	0.035	0.070	0.621
In men (n = 373)
A118G allele	0.827	0.352	0.019
Age	0.041	0.011	0.000
Education	−0.197	0.115	0.086
Income	−0.121	0.090	0.179
Pain at the time of initial evaluation	0.049	0.007	<0.001
Pain prior to MVC	0.066	0.070	0.347
In men with peritraumatic distress (n = 99)
A118G allele	0.340	0.802	0.672
Age	0.070	0.025	0.006
Education	0.115	0.242	0.636
Income	−0.255	0.169	0.132
Pain at the time of initial evaluation	0.039	0.010	<0.001
Pain prior to MVC	0.041	0.117	0.728

^aStudy site was also included in model as a categorical variable