In this paper, we examine the effects of recent parental Medicaid eligibility expansions on
Medicaid participation and private insurance coverage. We present a new approach for
estimating these policy effects that explicitly models the particular policy instrument over
which legislators have control–income eligibility thresholds. Our approach circumvents
estimation problems stemming from misclassification or measurement error. Moreover, it
allows us to assess how the policy effects may vary at different initial threshold levels. Using …