Mortality refers to the deaths that occur in a population. Together with fertility and migration, it is one of the three demographic processes that determine population changes. All people die eventually, but the probability of dying at a given age is related to several factors such as sex, income, occupation, marital status, life style, kind of food consumption, among others. Moreover, the level of mortality is one of the best indicators of a population’s standard of living and access to health care. The mortality of children under age 1 or under age 5 years in particular is considered a good indicator of the general conditions of hygiene and primary health care in a population.