People who drop out of treatment for their depression are less likely to recover but why people drop out has received little study. Researchers from the University of Texas studied 179 people being treated for depression over the course of a year. 23% had dropped out after six months, 47% after a year. Beliefs about the perceived harmfulness of antidepressants predicted dropping out. Younger age and fewer side effects at baseline were associated with dropping out after six months. Younger age, better perceived physical functioning and more negative attitudes about antidepressants were associated with dropping out after a year.
Warden, Diane ... [et al] - Predictors of attrition during one year of depression treatment: a roadmap to personalized intervention Journal of Psychiatric Practice March 2009, 15(2), 113-124