Link to source: Understanding Society
There is a clear relationship between household income and the likelihood of an adult experiencing anxiety or depression. Although the gap between those with higher and lower incomes has fluctuated slightly, there is little evidence to suggest it is closing.
Since 2010/11 the proportion of adults in the poorest fifth of the population experiencing anxiety or depression been between 22% and 25%. The rate for the those in the richest fifth of the population is much lower, around 13%.
Analysis over a longer period (using the Health Survey for England) suggests that the proportion of those in the poorest fifth experiencing anxiety or depression has risen since 1998, while the proportion of those in richer groups has fallen.