Table 2. Unadjusted Percentage of Adults Released From Prison With Any Health Care Use Within 30 Days After Incarceration (18 265 Releases)^a.

Study outcome	% (95% CI)		P value
	Baseline period	Enrollment assistance period
Outpatient visit
Any	16.1 (15.1 to 17.1)	24.4 (23.6 to 25.1)	<.001
With OUD diagnosis	0.7 (0.5 to 1.0)	1.4 (1.2 to 1.6)	<.001
With SUD diagnosis	2.5 (2.1 to 3.0)	3.8 (3.4 to 4.1)	<.001
Medication treatment for OUD	0.3 (0.1 to 0.4)	0.7 (0.5 to 0.8)	<.001
ED visit	5.6 (4.9 to 6.2)	6.2 (5.8 to 6.6)	.06
ED visit for overdose	0.3 (0.1 to 0.4)	0.4 (0.3 to 0.5)	.13
Inpatient stay	0.8 (0.6 to 1.1)	1.1 (0.9 to 1.3)	.04
Inpatient stay for overdose	0.06 (−0.008 to 0.13)	0.2 (0.1 to 0.2)	.048

Abbreviations: ED, emergency department; OUD, opioid use disorder; SUD, substance use disorder.

^a Authors’ calculations from Wisconsin Medicaid and Department of Corrections data. The unadjusted percentage of releases with each outcome is shown for the baseline and postenrollment assistance period. The P value for the test of equivalence across time periods is shown.