Table 2.

Results of linear regression models used to predict headache-related disability and pain interference domains from pain acceptance

	Headache Disability (HIT-6)					Pain Interference (BPI)
	Coeff	β	SE	p	R2	Coeff	β	SE	p	R2
CPAQ Total Score					0.154					0.403
Intercept	55.595 (41.18–63.01)		3.745	<.001		−31.132 (−52.06– −10.21)		10.570	0.004
CPAQ Total Score	0.028 (−0.04–0.10)	0.066	0.036	0.439		0.106 (−0.10–0.31)	0.074	0.103	0.305
Pain Intensity	1.121 (0.63–1.61)	0.393	0.248	<.001		5.892 (4.51–7.28)	0.615	0.701	<.001
Migraine Days	0.010 (−0.15–0.17)	0.011	0.080	0.898		−0.047 (−0.60–0.30)	−0.047	0.033	0.166
BMI	0.027 (−0.08–0.14)	0.040	0.066	0.632		0.417 (0.11–0.73)	0.187	0.157	0.009
Pain Willingness					0.201					0.443
Intercept	62.533 (57.79–68.28)		2.901	<.001		−5.119 (−20.96–10.72)		8.002	0.524
Pain Willingness	−0.119 (−0.20– −0.03)	−0.233	0.043	0.006		−0.447 (−0.68– −0.21)	−0.261	0.118	<.001
Pain Intensity	0.993 (0.52–1.47)	0.348	0.241	<.001		5.413 (4.10–6.73)	0.565	0.664	<.001
Migraine Days	0.021 (−0.13–0.18)	0.022	0.078	0.793		−0.110 (−0.54–0.32)	−0.035	0.216	0.611
BMI	−0.008 (−0.12–0.10)	−0.013	0.055	0.880		0.285 (−0.12–0.59)	0.128	0.152	0.524
Activity Engagement					0.139					0.418
Intercept	61.533 (54.77–68.30)		3.415	<.001		−8.842 (−27.82–10.13)		9.585	0.358
Activity Engagement	−0.058 (−0.13–0.02)	−0.138	0.038	0.128		−0.218 (−0.43–0.01)	−0.154	0.106	0.042
Pain Intensity	0.979 (0.48–1.48)	0.343	0.254	<.001		5.358 (3.95–6.77)	0.559	0.712	<.001
Migraine Days	0.013 (−0.15–0.17)	0.014	0.080	0.871		−0.138 (−0.58–0.31)	−0.044	0.224	0.538
BMI	<.001 (−0.11–0.11)	<.001	0.038	0.128		0.316 (−0.01–0.63)	0.142	0.160	0.051