Country A has a single-payer health care system and Country B has a system of socialized medicine. The residents of Country A have a longer life expectancy at birth, longer life expectancy at age 65, a lower infant mortality rate, and a lower risk of dying from cancer before age 75 than the residents of Country B. Assuming that the data described above is accurate (that is, there are no data collection problems leading to false differences between the two countries), is it safe to assume that Country A's system of health care is superior to Country B's system, and leads to better health outcomes?