* Data acquisition
I used the data from  English Longitudinal Study of Aging, Wave5(2010 - 2011) this data is collected by UK NatCen Social Research, ELSA follows the lives of adults in England ages 50 and over. This dataset is valuable and suitable in this project, firstly, it has sufficient samples: 10,274 casescases, secondly, in Wave5 survey, ELSA asked respondents about the frequency of five discriminatory situations as follows,