Table 4.

Linear Regression Model of the Effect of Travel Burden Indicators on Anxiety (GAD8).

	Model 1 a		Model 2 b		Model 3 c
	β (95%CI)	p-Value	β (95%CI)	p-Value	β (95%CI)	p-Value
Difficulty Traveling to Primary Care Provider	1.14 (−1.6, 3.9)	0.41	2.2 (−0.8, 5.1)	0.14	3.1 (0.1, 6.1)	0.04
Difficulty Traveling to Rheumatologist	−1.7 (−4.3, 1)	0.21	−1.8 (−4.5, 0.9)	0.18	−2.54 (−5.2, 0.2)	0.07
Distance (in miles) to Rheumatologist	−0.03 (−0.1, 0.02)	0.25	−0.02 (−0.1, 0.04)	0.60	−0.002 (−0.1, 0.06)	0.96
Commute Time (in minutes) to Lupus Care	0.01 (−0.05, 0.1)	0.72	−0.003 (−0.06, 0.1)	0.92	−0.02 (−0.07, 0.04)	0.51
Travel Issues Make Keeping Appointments Difficult	0.3 (−1.6, 2.2)	0.76	−0.3 (−2.3, 1.6)	0.74	0.3 (−1.7, 2.3)	0.76
Frequency of Health Care Visits in a Week	0.7 (−0.4, 1.7)	0.21	0.6 (−0.4, 1.7)	0.23	0.5 (−0.6, 1.6)	0.34
Insurance Covers Medical Transportation	3 (−0.7, 6.8)	0.11	2.9 (−0.7, 6.6)	0.11	0.2 (−4.2, 4.6)	0.92
Difficulty Scheduling Medical Transportation	−0.3 (−1.9, 1.2)	0.68	−0.1 (−1.6, 1.4)	0.93	0.1 (−1.4, 1.5)	0.95
Have to Take Time Off for Doctors’ Appointments	2.4 (−0.5, 5.3)	0.10	3.1 (0.2, 5.9)	0.03	4 (0.5, 7.5)	0.02
SLAQ			0.52 (−0.1, 1.1)	0.10	0.04 (−0.02, 0.1)	0.20
Age					0.1 (−1, 1.2)	0.90
Employment					−2.7 (−6.8, 1.3)	0.18
Income					−0.9 (−1.8, −0.02)	0.05

^a Unadjusted; ^b Adjusting for disease activity using SLAQ.; ^c Adjusting for disease activity using SLAQ, Age, Employment, and Insurance.