Different patterns of change in the American, British, and Canadian health
care systems in the 1990s result from the particular logic of each system.
Different balances of influence across major categories of actors, and diff
erent mixes of hierarchical, market-based, and collegial instruments have d
ifferent implications for lines of accountability and for information costs
, and thus create different incentives that shape behavior. Market instrume
nts functioned differently when introduced into Britain's system of "hierar
chical corporatism" than in the American mixed-market system. Profession/st
ate accommodations in Britain and Canada tempered the pace of change, while
the entrepreneurial logic of the U.S. system generated a turbulent transfo
rmation.