Voluntary prepayment plans are making a worthwhile contribution to health security and have important potentialities. Beginning in 1932 hospital service plans have developed to the point where there are seventy-eight of such plans in the United States, with an enrolment of over 16,000,000 persons. Before the end of the year it is likely that plans will exist in all states. At the present time in three states over 30 per cent of the population of the state is enrolled and in seven states between 20 and 30 per cent of the population are enrolled., In a number of urban centers—Cleveland, Ohio, Rochester, N. Y., Rockford, Ill.—to name a few, over 50 per cent of the population belong to the hospital service plan.
At the present time there are in operation nineteen medical service plans sponsored by local and state medical societies. These plans have a total enrolment of