The United States spends more money on health care than any other country in the Organisation for Economic Co-operation and Development (OECD). The OECD consists of 30 democracies, most of which are considered the most economically advanced countries in the world. The OECD data and other research provide some insight as to why health care spending is higher in the United States than in other countries, although many difficult research issues remain. This book presents some of the available data and research and concludes with a summary of study findings.