The results suggest that the 30 Baht program had a disproportionate impact on the utilization of women of childbearing age and infants, especially amongst the MWS group. In particular, among the MWS we find an increase of 0.0217 ( p < 0.05) for women aged 20–30 and infants, compared to an increase of 0.0085 ( p < 0.05) for the rest of the MWS group. We also find a larger increase among women aged 20–30 and infants for the UNINS (0.0065 versus 0.0052), although the increase for women and children is not statistically significant (arguably due to the smaller sample size).