Table 1.

Socioeconomic factors’ definitions

Socioeconomic factors	Classic definition
Age group	Persons classified by age from birth (INFANT, NEWBORN) to octogenarians and older (AGED, 80 AND OVER).
Sex	The totality of characteristics of reproductive structure, functions, PHENOTYPE, and GENOTYPE, differentiating the MALE from the FEMALE organism.
Educational level	Educational attainment or level of education of individuals.
Marital status	A demographic parameter indicating a person’s status with respect to marriage, divorce, widowhood, singleness, etc.
Occupation	Crafts, trades, professions, or other means of earning a living.
Income	Revenues or receipts accruing from business enterprise, labor, or invested capital.
Residence characteristics	Elements of residence that characterize a population. They are applicable in determining need for and utilization of health services.
Urbanization	The process whereby a society changes from a rural to an urban way of life. It refers also to the gradual increase in the proportion of people living in urban areas.