Among a Group of Canadian Men Who Were Tracked for Ten

Multiple Choice

Among a group of Canadian men who were tracked for ten years,those who had scored over 130 on intelligence tests were more likely to suffer severe depression than those who had scored below 130 on intelligence tests.Identify the parameter of interest.

A) Nationality
B) Score on intelligence test
C) Gender
D) Risk of suffering from severe depression
E) Number of years since last episode of severe depression