Melody@@

Hi, I am a current MPH Epidemiology graduate (UM) and I just found a job in the local health department. I am thinking to apply for either PhD in Epidemiology or PhD in Health Policy. Even I really like research/data analysis, I found many public health issue are related to health policy. I am getting more interested in this area. Could anyone provide me some suggestion of the difference of these two PhD program? Thanks.