Table 2.

Independent Predictors of the Use of VACC Compared with VAF for Sleep Studies (N = 467,377)

	OR estimate	95% CI	p value
Intercept	0.37	0.16–0.89	0.05
BMI*—overweight	1.02	0.98–1.06	Ns
BMI*—obese	1.05	0.99–1.11	Ns
Some copay	0.90	0.84–0.97	0.01
Full copay	0.83	0.76–0.91	0.001
Age 45–54 years	1.02	0.96–1.09	Ns
Age 55–64 years	0.95	0.84–1.08	Ns
Age 65+ years	0.72	0.55–0.96	.05
Male	0.97	0.89–1.05	Ns
Black	0.80	0.63–1.02	0.10
Other race	1.10	0.83–1.45	Ns
Marital status—single	0.88	0.83–0.92	0.001
Rural	1.47	1.20–1.80	0.001
Highly rural	1.55	1.11–2.15	0.01
Nosos Q2†	0.99	0.95–1.04	Ns
Nosos Q3†	0.95	0.88–1.02	Ns
Nosos Q4†	0.78	0.68–0.88	0.001
Miles to nearest VA	1.00	1.00–1.01	Ns
Private insurance	1.09	0.97–1.23	Ns
Public insurance	2.01	1.11–3.65	0.05
Public and private insurance	1.35	1.15–1.59	0.001

*BMI body mass index

†Nosos is a risk adjustment score as to whether a patient is more or less likely to have similar health care costs as the average patient. The average patient scores a 1; less than 1 indicates lower expected costs and greater than 1 indicates higher expected costs