Skip to main content
. 2021 Aug 27;2(8):e212285. doi: 10.1001/jamahealthforum.2021.2285

Table. Absolute Differences in HCV Prescription Fills Between Treated States and Synthetic Control States in the Period After Adoption of Carve-Out Policies.

State Policy changea Treatedb Synthetic controlb Difference (95% CI)c
Year Quarter
Overall NA NA 47.7 25.6 22.1 (12.7-34.1)
Indiana 2016 Q4 43.6 32.1 11.5 (5.1-19.0)
Michigan 2016 Q2 53.0 16.5 36.6 (23.5-53.9)
New Hampshire 2016 Q3 60.6 17.0 43.6 (25.9-68.4)
West Virginia 2017 Q3 45.7 25.0 20.7 (11.1-32.8)

Abbreviations: HCV, hepatitis C virus; NA, not applicable.

a

Year and quarter of carve out implementation.

b

Quarterly rates of HCV prescriptions per 100 000 Medicaid enrollees during the postperiod. Synthetic control states were also matched based on liver and sobriety restrictions. Estimates are for 2 years after the policy change.

c

Upper and lower bounds of confidence intervals were found using Taylor series linearization.