Failure to communicate effectively or failure of feedback?

摘要

We read the debate on antidepressants and suicide with interest, especially the issue concerning the importance of controlling for possible confounding variables in ecological studies and the associated difficulties in drawing conclusions from such ecological observations.One potentially important confounder, which has been overlooked, is the size of the family of origin. Birth cohort studies from Scotland and Norway suggest that having elder siblings may be linked with an increased risk of suicide.