Similarly, we note that poor marital quality predicts subsequent depression. (link.springer.com)
The following hypotheses were tested in a longitudinal, population - based study: (1) Attention deficit hyperactivity disorder (ADHD) symptoms are associated with peer dislike and victimisation; (2) Peer dislike and victimisation increase the risk for subsequent depression; and (3) The effect of ADHD symptoms on depression is partly mediated through peer dislike and victimisation. (link.springer.com)
To detect subsequent depression, the researchers looked at standardized diagnostic codes called International Classification of Diseases codes, or ICD codes. (sciencedaily.com)