Table 3.

Multivariable logistic regression model for the outcome of arrived appointment

Variable		Coefficient (Beta)	SE Beta	Wald χ2	P	OR	95% CI
Intercept		2.97	0.07	2009.7	< .001
HVP status
	Nonuser (reference)
	Enrollee	0.33	0.07	25.1	< .001	1.39	1.22-1.57
Clinic
	Duke Primary Care, clinic 1 (reference)
	Duke Primary Care, clinic 2	−0.12	0.04	9.2	.003	0.89	0.82-0.96
	Duke Primary Care, clinic 3	0.80	0.04	328.7	< .001	2.22	2.04-2.42
	Duke Children’s Primary Care, clinic 1	0.31	0.06	27.9	< .001	1.36	1.21-1.52
	Duke Children’s Primary Care, clinic 2	−0.25	0.05	28.2	< .001	0.78	0.71-0.85
	Duke Children’s Primary Care, clinic 3	−0.16	0.07	5.5	.02	0.85	0.74-0.97
	Hematology/oncology clinic	0.07	0.04	3.1	.08	1.08	0.99-1.17
Sex
	Male (reference)
	Female	0.06	0.01	14.4	< .001	1.06	1.03-1.10
Race
	White (reference)
	Asian	0.09	0.06	2.3	.13	1.10	0.97-1.24
	Black	−0.82	0.02	1798.2	< .001	0.44	0.42-0.46
	Other	−0.21	0.05	23.1	< .001	0.80	0.73-0.88
Age
	40-64 (reference)
	≤ 17	0.01	0.04	0.3	.60	1.02	0.95-1.09
	18-29	−0.35	0.03	131.2	< .001	0.70	0.66-0.75
	30-39	−0.25	0.03	65.8	<.001	0.78	0.73-0.83
	≥ 65	0.43	0.04	133.5	< .001	1.54	1.43-1.66
Appointment type
	Return visits (reference)
	Consults	0.09	0.06	2.4	.12	1.10	0.98-1.23
	New visits	−0.18	0.05	16.0	< .001	0.83	0.76-0.91
	Clinical trial visits	−0.51	0.03	389.7	< .001	0.60	0.57-0.63
Ethnicity
	Hispanic (reference)
	Other	−0.18	0.05	11.5	< .001	0.84	0.75-0.93
Payor
	Private insurance (reference)
	Medicaid/indigent	−0.53	0.02	632.6	< .001	0.59	0.56-0.61
	Medicare	−0.22	0.03	40.8	< .001	0.80	0.75-0.86
	Uninsured	−0.93	0.05	354.9	< .001	0.39	0.36-0.43
	Unknown	−0.28	0.06	20.5	< .001	0.76	0.67-0.85
Interaction with HVP enrollee (Duke Primary Care, clinic 1*HVP enrollee)
	Duke Primary Care - clinic 2	−0.21	0.20	1.2	.27	0.81	0.55-1.18
	Duke Primary Care - clinic 3	−0.11	0.11	0.8	.37	0.90	0.71-1.13
	Duke Children’s Primary Care - clinic 1	1.40	1.02	1.9	.17	4.03	0.55-29.70
	Duke Children’s Primary Care - clinic 2	0.31	0.09	11.7	< .001	1.36	1.14-1.62
	Duke Children’s Primary Care- clinic 3	0.13	0.11	1.3	.26	1.14	0.91-1.42
	Hematology/oncology clinic	−0.05	0.09	0.3	.61	0.95	0.80-1.14