Table 2. Likelihood of Zip Code–Level Access to a Pharmacy Contracted With at Least 1 Medicaid Insurance Plan, Washington State, 2017^a .

Characteristic	Unadjusted Model		Adjusted Model
	Risk Ratio (95% CI)	P Value	Risk Ratio (95% CI)	P Value
Rurality classification
Urban core	1 [Reference]	—	1 [Reference]	—
Suburban	0.55 (0.41–0.74)	<.001	0.76 (0.58–1.01)	.06
Large rural	0.51 (0.34–0.76)	.001	0.68 (0.49–0.95)	.02
Small rural	0.41 (0.30–0.55)	<.001	0.64 (0.46–0.91)	.01
Sociodemographic
Percentage aged >65	0.98 (0.97–0.98)	<.001	1.00 (0.99–1.01)	.55
Percentage nonwhite	1.01 (1.01–1.02)	<.001	1.00 (0.99–1.00)	.92
Percentage Hispanic	1.00 (0.99–1.00)	.92	0.99 (0.99–1.00)	.18
Percentage Medicaid-insured	0.99 (0.99–1.00)	.10	1.01 (1.00–1.02)	.13
Percentage with income below 200% of the federal poverty level	0.99 (0.99–1.00)	<.001	1.00 (0.99–1.00)	.33
Total population	1.00 (1.00–1.00)	<.001	1.00 (1.00–1.00)	<.001

^a Adjusted model includes all listed covariates. Variance inflation factor for all variables <10.