The researchers found that two years before the stroke, the scores of the participants who had a stroke increased on an average by 0.33 points. Six years before the stroke, the scores of those who had a stroke was almost the same as those who did not have a stroke.
This clearly shows that the occurrence of the symptoms of depression increased 2 years before the stroke happened, which draws a link between the two health conditions.
Following the stroke, depressive symptoms increased and stayed high 10 years later.
People who never had a stroke, had a consistency in their scores throughout the study.