Health Organization of health care system performance among 191 member nations, published in 2000, ranked Canada 30th and the U.S. 37th, and the overall health of Canada 35th to the American 72nd. The WHO did not merely consider health care outcomes, but also placed heavy emphasis on the health disparities between rich and poor, funding for the health care needs of the poor, and the extent to which a country was reaching the potential health care outcomes they believed were possible for that nation. In an international comparison of 21 more specific quality indicators conducted by the Commonwealth Fund International Working Group on Quality Indicators, the results were more divided. One of the indicators was a tie, and in 3 others, data was unavailable from one country or the other. Canada performed better on 11 indicators; such as survival rates for colorectal cancer, childhood leukemia, and kidney and liver transplants. The U.S. performed better on 6 indicators, including survival rates for breast and cervical cancer, and avoidance of childhood diseases such as pertussis and measles. The 21 indicators were distilled from a starting list of 1000. The authors state that, "It is an opportunistic list, rather than a comprehensive list." Some of the difference in outcomes may also be related to lifestyle choices. The OECD found that Americans have slightly higher rates of smoking and alcohol consumption than do Canadians as well as significantly higher rates of obesity. A joint US-Canadian study found slightly higher smoking rates among Canadians. Another study found that Americans have higher rates not only of obesity, but also of other health risk factors and chronic conditions, including physical inactivity, diabetes, hypertension, arthritis, and chronic obstructive pulmonary disease. While a Canadian systematic review stated that the differences in the systems of Canada and the United States could not alone explain differences in healthcare outcomes, the study didn't consider that over 44,000 Americans die every year due to not having a single payer system for healthcare in the United States and it didn't consider the millions more that live without proper medical care due to a lack of insurance. The United States and Canada have different racial makeups, different obesity rates and different alcoholism rates, which would likely cause the US to have a shorter average life expectancy and higher infant mortality even with equal healthcare provided. The US population is 12.2% African Americans and 16.3% Hispanic