This chapter will compare the results of the case studies and discuss the hypotheses proposed in the theoretical section against the background of the empirical analysis. This chapter begins with a comparison of the coupling and the coevolution of the two policy sectors in the five countries based on the case studies (Australia, Germany, Switzerland, UK and U.S.). Then, I am going to discuss the main hypotheses and present a revised theoretical model, which includes additional theoretical elements according to a strategy of inductive iterative refinement (Yom, 2015). After that, the chapter will argue that the health care and the public health sectors coevolved towards complementarity, i.e., policy integration of health care and public health, and illustrate this argument by comparing reform activity in the two sectors based on a quantitative empirical assessment of reforms related to the two sectors.