Figure 1 summarizes the three groups in the population and the way in whicheach was affected by the 30 Baht program. The UNINS faced a price reduction forcare but also provided less revenue to hospitals. The MWS faced no change in theprice of obtaining care, but the funding to hospitals significantly increased. The Control group (CSMBS and SSS) had no formal change to their programs around the introduction of 30 Baht