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Fig. 1 | BMC Health Services Research

Fig. 1

From: Medicaid prescription limits: policy trends and comparative impact on utilization

Fig. 1

Proportion of prescriptions (a) and spending (b) accounted for by preventive essential drugs before and after implementation of overall cap policies. Triangles and squares represent measured proportion of utilization. Solid lines represent predicted utilization based on models. The dotted line represents predicted utilization if overall cap policies had not been implemented (the counterfactual). Time is measured in calendar quarters relative to policy implementation. The weighted average of medication use in states without prescription caps throughout the study period was used as a control. The timeframe for the control data was standardized relative to the quarter in which the cap policy was initiated in the intervention state

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