Table 4.

Multiple regression predicting the magnitude of endogenous pain inhibition (CPM) as a function of optimism.

	R2	B	SEB	β
Variables	.08*
Sex		36.45	14.89	0.20*
Ethnicity A/PIa		8.24	18.39	0.04
Ethnicity AAb		17.64	19.86	0.08
PCS		−0.81	0.80	−0.09
BDI		2.27	1.76	0.12
LOT-R		3.38	1.70	0.19*

^a= First dummy-coded ethnicity variable (0 = Caucasian Americans, 1 = Asian/Pacific Islander)

^b= Second dummy-coded ethnicity variable (0 = Caucasian Americans, 1 = African Americans)

^*= p < 0.05,

^**= p < 0.01