“…Since quality of life is a multidimensional construct, it is potentially influenced by a wide range of variables, including socio-demographic 3,4,5,6 , psychosocial 3,5,7 , and health-related 3,6,7,8,9,10,11,12,13,14 . For the first group of variables, studies have shown that elders' mean family income and level of schooling are positively associated with quality of life 5 .…”