This paper applies an interdisciplinary approach to analyze the proces
s of health reform in four significant periods in Chilean history: (1)
the consolidation of state responsibility for public health in the 19
20s, (2) the creation of the state-run National Health Service in the
1950s, (3) the decentralization of primary care and privatization of h
ealth insurance in the 1980s, and (4) the strengthening of the mixed p
ublic-private market in the 1990s. Building on the authors' separate d
isciplines, the paper examines the epidemiological, political and econ
omic contexts of these reforms to test simple hypotheses about how the
se factors shape reform adoption and implementation. The analysis unde
rlines: (1) the importance of epidemiological data as an impetus to pu
blic policy; (2) the inhibiting role of economic recession in adoption
and implementation of reforms; and (3) the importance of the congruen
ce of reforms with underlying political ideology in civil society. The
paper also tests several hypotheses about the reform processes themse
lves, exploring the role of antecedents, interest groups, and consensu
s-building in the policy process. It found that incremental processes
building on antecedent trends characterize most reform efforts. Howeve
r, interest group politics and consensus building were found to be com
plex processes that are not easily captured by the simple hypotheses t
hat were tested. The interdisciplinary approach is found to be a promi
sing form of analysis and suggests further theoretical and empirical i
ssues to be explored.