This analysis reflects on the importance of political parties, and the poli
cies they implement when in government, in determining the level of equalit
ies/inequalities in a society, the extent of the welfare state (including t
he level of health care coverage by the state), the employment/unemployment
rate, and the level of population health. The study looks at the impact of
the major political traditions in the advanced OECD countries during the g
olden years of capitalism (1945-1980) - social democratic, Christian democr
atic, liberal, and ex-fascist - in four areas: (1) the main determinants of
income inequalities, such as the overall distribution of income derived fr
om capital versus labor, wage dispersion in the labor force, the redistribu
tive effect of the welfare state, and the levels and types of employment/un
employment; (2) levels of public expenditures and health care benefits cove
rage; (3) public support of services to families, such as child care and do
miciliary care; and (4) the level of population health as measured by infan
t mortality rates. The results indicate that political traditions more comm
itted to redistributive policies (both economic and social) and full-employ
ment policies, such as the social democratic parties, were generally more s
uccessful in improving the health of populations, such as reducing infant m
ortality. The erroneous assumption of a conflict between social equity and
economic efficiency, as in the liberal tradition, is also discussed. The st
udy aims at filling a void in the growing health and social inequalities li
terature, which rarely touches on the importance of political forces in inf
luencing inequalities. The data used in the study are largely from OECD hea
lth data for 1997 and 1998; the OECD statistical services; the comparative
welfare state data set assembled by Huber, Ragin and Stephens; and the US B
ureau of Labor Statistics. (C) 2001 Elsevier Science Ltd. All rights reserv
ed.