Elizabeth Knock: Anxiety and depression in young women.
Research has documented the comorbidity between anxiety and depression, and found anxiety to commonly occur first in the relationship. The present study examined predictors of comorbid depression in women who had previously experienced anxiety alone, using longitudinal data from 7743 participants in the Australian Longitudinal Study of Women’s Health. Women suffering from anxiety alone at time one, were significantly more likely to develop depression than women who suffered from neither illness. Contrary to expectations, the same predictors were identified for the development of comorbid depression, as pure depression. These results suggest that the difference in development rates of pure and comorbid depression, are potentially the result of prior anxiety, rather than different predictors, and provide support for the role of anxiety as a causal factor for depression.