Table 3.

Effect of SES on Pain Interference and Pain Severity under the Influence of Race

Variables		β	SE B	p-value	95% CI		Model R	Model R2	F	ΔR2
Outcome	Predictor				LL	UL
Pain interference	Social status	0.7	0.37	0.06	−0.02	1.43	0.36	0.13	4.9	0.06
	Race	1.99	1.31	0.13	−0.6	4.6
	Race X social statusa	−0.59	0.23	0.01	−1.05	−0.12
	Household income	−0.19	0.18	0.29	−0.55	0.17	0.41	0.17	6.64	0.0002
	Race	−0.62	0.96	0.52	−2.52	1.28
	Race X income	−0.02	0.12	0.88	−0.25	0.22
	Work status	0.35	0.25	0.16	−0.14	0.86	0.43	0.19	7.67	0.0004
	Race	−1.21	0.68	0.08	−2.57	0.15
	Race X work status	−0.03	0.15	0.82	−0.34	0.27
	Education	−0.43	0.63	0.49	−1.67	0.81	0.3	0.09	3.35	<0.0001
	Race	−1.14	2.68	0.67	−6.45	4.17
	Race X Education	0.01	0.42	0.97	−0.81	0.84
Pain Severity	Social status	0.11	0.33	0.73	−0.55	0.78	0.37	0.13	5.14	0.004
	Race	−0.73	1.2	0.54	−3.11	1.65
	Race X social status	−0.15	0.21	0.47	−0.58	0.27
	Household income	−0.18	0.16	0.26	−0.49	0.13	0.5	0.25	10.63	0.0003
	Race	−1.04	0.83	0.21	−2.69	0.6
	Race X income	−0.02	0.1	0.84	−0.22	0.18
	Work status	0.23	0.23	0.33	−0.23	0.69	0.4	0.16	6.42	0.001
	Race	−1.51	0.64	0.02	−2.79	0.23
	Race X work status	−0.05	0.14	0.74	−0.33	0.23
	Education	−0.63	0.56	0.26	−1.17	0.47	0.39	0.15	5.82	0.0029
	Race	−2.87	2.38	0.23	−7.59	1.86
	Race X Education	0.22	0.37	0.56	−0.52	0.95

^aStatistically significant interaction; income = Annual household income; CI = confidence interval; LL = Lower limit of 95% CI; UL = Upper limit of 95% CI