Effects of a cost-sharing policy on disenrollment from a state health insurance program.

Subsidized public health insurance programs face financial difficulties and are increasingly implementing policies to pass on greater costs to low-income enrollees. Results of a stratified, random sample of 1,153 enrollees and disenrollees of a state program after introduction of increased cost sharing revealed three main reasons for disenrollment, which varied by enrollee income: finding other coverage, becoming financially ineligible, or dropping coverage as too expensive. Seventeen percent of disenrollees cited cost sharing as a reason for disenrollment.